IPC/WHMA-A-620B Comment Resolution Following August 2012 Ballot

Transcription

1 IPC/WHMA-A-620B Comment Resolution Following August 2012 Ballot This report is divided into multiple tables: Table 1 - Actions For Publication (1-2) Table 2 - Resolved Ballot Comments That Effected Criteria (3-11) Table 3 - Ballot Comments Deferred to Next Revision or Other Committees (12-32) Table 4 - Resolved Ballot Comments with Editorial or Changes That Did Not Significantly Affect Criteria (33-108) Table 5 - All Comments Resolved At Previous Meetings ( ) Table 6 - Comments Deferred to Hdbk-620 or Other Task Groups (from previous meetings) ( ) TABLE 1 - ACTIONS FOR PUBLICATION Source Ref. # Recommendation Reason for Recommendation Resolution lead free symbol should be bigger with better resolution The Pb in the symbol is barely legible and may cause confusion Propose new: Shield termination Shield Jumper Wire Common Ground Point Requirements for shield jumper wires spliced to a common point ground shall [D1D2D3] be the same as the splice requirements documented in 8.1 or 8.2 for the type of splice called out, e.g., lap. TABLE 2 - RESOLVED BALLOT COMMENTS THAT EFFECT REQUIREMENTS Source Ref. # Recommendation Reason for Recommendation Resolution Define Flowdown, why is this important? Delete section I have no idea what this section is communicating; it really is confusing as to its intent. Bob Potysman, Assembletronics Randy McNutt, NGC Revise: These criteria apply to crimped end lap splices formed in a machined contact (see Figure 8-56). When attaching multiple wires to a terminal the combined circular mil area of the wires shall [D1D2D3] comply with the circular mil area range for the terminal provides criteria for wire barrel crimp provides criteria for CMA buildup. STAFF ACTION 7 Apr 10 Will be enlarged at publication Criteria accepted. ACTION: Garry McGuire, Marshall SFC to provide pix <Feb2012> This is important for subcontracting. Dave Scidmore will contact Bob to help with understanding.<aug2012> modification<aug2012>

2 16.3 provides criteria for shrink sleeving. Target Class 1,2,3 Less than 50% overall wire diameter clearance between the insulation and contact barrel. Conductors bottomed in the contact. Conductor strands fill the inspection window. Crimp indent is centered between the inspection window and the wire entry end of the barrel. Crimp indents around the contact barrel are evenly spaced and of equal depth. Contact has no visible fractures, cracks, or exposed base metal in crimp barrel area. Machined contact pin cut end does not have sharp edges. Acceptable Class 1,2,3 When using insulating shrink sleeving it is less than 2 wire group diameters beyond the cut end and is sealed. When using insulation shrink sleeving it is greater than 2 wire group diameters beyond the cut end. Machined contact pin cut end is insulated with shrink sleeving or cap. Machined contact is not cracked after cutting off pin. Acceptable Class 1 Process Indicator Class 2 Defect Class 3 End splice insulating shrink sleeving or cap overlaps the wire less than 1 diameter of the wire group. End splice insulating shrink sleeving or cap is not sealed when it is less than 2 wire group diameters beyond the cut end. Defect Class 1,2,3 Machine contact pin is not cut. Machine contact is cracked after cutting off pin. Randy McNutt, NGC Defect Class 2,3 Insulation is greater than 2 wire diameters from the end of the contact barrel Add Note to read as follows; This criterion applies only to connectors with unwired contacts inserted. If installed as shown in cavities without a contact the sealing plug can be inserted to a depth that will cause the plug head to be retained by the contact retention fingers. At that point they are non-removable and the connector is scrap. These instructions will lead to a failure mode. 2 modification<aug2012>

3 Barry Morris, ART Stephen Fribbins, Fribbins Training Services Barry Morris, ART Table Add in strand damage criteria for 1 (single strand) This has been added to table 3-1 (allowable strand damage). Coaxial cable can have a single (solid) centre conductor. Therefore the table should show maximum allowable damage for this A123 delete 3rd bullet Adds no value, the surface gets trimmed to the face of the Trim area offset does not exceed 10% of the cable diameter connector. If the statement is left as is we need to reference (D) beyond the perpendicular angle to the center conductor. Figure 13-3 for understanding Replace Table 14-1 Minimum Bend Radius Requirements with IPC-A-610E, Table 4-1 Minimum Bend Radius Requirements, but delete Cable Type: Coaxial Cable line as this is covered below in Coaxial Fixed and Flexible Cables Add criteria for Flat ribbon, CAT5, Fibre optic etc. (replace table 14-1 with table 4-1 from IPC-A-610E) Defect 123 adjacent to figure 14-34, delete the last (3rd) bullet Change 3rd bullet to read: Any exposed part of the conductor D123 Delete 3rd bullet Change 3rd bullet to read: Any exposed part of the conductor Table 14-1 does cover bend radius requirements for many of our wires and cables. The table 4-1 in A-610E shows a far more comprehensive range of cable, many of these are more common in cable harness assemblies. Therefore is suggest using the table from A-610E. Makes more sense if we reference the exposed conductor. Makes more sense if we reference the exposed conductor. Accepted<Aug2012> Added reference( See Figure 13-3)<Aug2012> <Aug2012> <Aug2012> modification<aug2012> modification<aug2012> Blen Talbot, L-3 TABLE 3 - BALLOT COMMENTS DEFERRED TO NEXT REVISION OR OTHER COMMITTEES Source Ref. # Recommendation Reason for Recommendation Resolution Add a statement to indicate that requirements apply to stand alone cables, cables installed or assembled inside chassis, subassemblies, systems or anywhere similar characteristics exist. Bob Potysman, Assembletronics Suggest adding after the first sentence. However, where similar characteristics exist (e.g., chassis, drawer or enclosure), this document provides product acceptance criteria. 4.6 Defect Class 2,3 Insulation sleeving overlaps the wire insulation by less than 2 wire diameters (B). add clarifying note 4.0: Where sleeving is used to provide strain relief the overlap shall (Defect 1,2,3) be 2 wire diameters (where sleeving is used to provide insulation protection and the wires are not subject to strain the overlap shall (Defect 1,2,3) be minimum 1 wire diameter.) Define why section 4 and section 8 sleeving overlap conditions are different. 3 The committee did not agree to expand the scope of this standard. Box build requirements should be deferred to IPC-A-630. <Aug2012> Resolve blue highlighted inconsistency Defer to Rev C.

4 Chad Gyorke, DRS-c3a Rob Boyd, Schleuniger Inc Add to the end of the 2 nd and 3 rd bullets not shown Examples of side route defects are not shown. No examples were provided by committee members; As an IPC/WHMA CIT I often get asked questions from the 620A is mute regarding insulation crimp tabs overlapping engineer and quality groups at my facility, here is a question that I could use some help answering. The insulation crimp tabs on this particular Molex crimp overlap. The conductor crimp is to the book. The contact passes pull testing and the crimper we used was made by the contact manufacturer. Would you deem this contact acceptable for a class 3 product? Defer to Rev C. Statement added to introduction <Sep2010> <Sep2010 picture resolution and focus is not good enough; request committee member to provide an alternate pix> Rob Boyd, Schleuniger Inc. Nothing received; deferred to future revision <Jun2012> Need better picture (fig 5-36) ACTION: Bob Grenke, Molex, to see if they can provide better pix.<june2011> Nothing received; deferred to future revision Shrink Sleeving Wire support Crimped/Soldered Terminals Section applies to both crimped and soldered terminals. Sleeving may be used to cover crimped or soldered termination for stress relief or electrical isolation. The heating processes used to shrink the sleeving insulation shall not damage the crimped device, wire, sleeving adjacent components, nor reflow the solder connection. <Jun2012> New criteria recommendation. Defer to Revision C. Target Sleeving extends past the brush but does not extend into the mating area of the terminal. Sleeving extends onto the wire insulation 4 wire diameters. Sleeving is tight on the crimped device and the wire. Acceptable Sleeving is tight on the crimped device, but not on the wire. Sleeving is flush the end of the brush. Sleeving extends onto the wire insulation a minimum of 2 wire diameters. Defect Sleeving extends into the mating area of the crimped device. Sleeving is damaged e.g., Split, cracked or charred. Sleeving is loose on the crimped device Insulation extends less than 2 wire diameters onto the wire insulation Add an introductory paragraph stating that the color code Clarification (2012> identifies the (AWG) wire range of the splice. Defer to handbook 4

5 Target 123, Delete the third bullet and add the following note: NOTE: Clamps must be tightened to fully collapse the split lock washers and secure the jacket, wires or bundle but need not be fully closed (touching). There can be space between the inner surfaces of the clamps and the connector backshell ears/tongs on both sides. Clarifies the criteria This section should be rewritten but deferred to the rev C. By default of the section title this section addresses the bonding of both boots and bonded sleeving junctions in the Defect 123, adjacent to Figure 9-33, 34, 6th bullet we have the following statement : Adhesive is excessive and flowed beyond the boundaries of the joint. How would you explain what is meant by the boundaries of the joint? I think the criteria that s located in 620, is ok for cables/harness bundles, but for a single wire where the marker sleeve is the smallest size available and the recovered (shrunk) inside diameter is larger than the wire and there is no other option due to the wire gauge then we need an option to allow this condition to be acceptable. If the marker is captivated between points and there is no way the marker can escape, as shown in the picture (E1). I m referring to the marker that is captivated between two points. In this case between the crimped lug and the point of break out from a wire bundle or any two points (A & B). The other marker (E2) should be a defect because it slides freely and is not captivated between points, and come will come off. In , Acceptable Class 1,2,3, if the text (no sliding) was removed It would help. Because of the no sliding many of the inspectors try and see if the marker will slide if they can move it they fail it. I don t think it adds a lot to the statement. Then the condition above would be acceptable and could even meet the target of being completely shrunk and secure (between point A and B). In the Defect Class 1,2,3 should just state Marker sleeve not secure. ###### The target and the acceptable should be reversed. Leaving no sliding in the acceptable makes the acceptable more restrictive than the target. There should be some relief in the acceptable. If the marking can move more than 12 inches from the end that it references, then we are covered and the criteria for Location and Ordination (12.4) would apply (marker not located properly). Leaving the document as is, creates a problem that is easily resolved. This would apply to a bundle of wires as long as the marker is secure between points that restrict it s movement and is located within 12 inches of the end it references. There is currently not a defect for sliding. The defect statement is The marker sleeve is not sufficiently shrunk to remain secure, so since there isn t a defect for sliding I could apply Conditions not Specified, and accept the marker that moves but is secure Change the Target 123 to read the same as the first bullet of Target Consistency between sections increase ease of use. Allows 123, section inspection to become more precise and accurate. Lead extends through the slot and is visible on the exit side. Make the two sections the same where its possible to do so T 123 delete statement and use the target statement of Solder forms a fillet with that portion of the lead that is in contact with the terminal. The title of the page is Coaxial Connector Center Conductor Solder so this section should reflect solder criteria not wire placement that was addressed in 13.5 Defer to Rev C<Aug2012> Defer to Rev C<Aug2012> Defer to Rev C<Aug2012> Defer to Rev C Defer to Rev C<Aug2012> Defer to Rev C<Aug2012> 5

6 Garry Maguire, MSFC A123 Delete Bullet and replace with , A123 bullets Solder Fills The Terminal Slot. Lead or wire end is discernible in the solder on the exit side of the terminal Add a defect 123 as in Fillet not formed with 100% of the portion of the wire that is in contact with the terminal. Lead end not visible in solder on exit side of terminal Modify figure as showing in post-ballot draft Target Class 1,2,3 Wire, insulation, or solder does not extend above the ring shoulder (A). Conductor (B) wrap equals or exceeds 180 degrees. Conductor wrap is in contact with the surface to be soldered for the entire wrap. Continuous solder fillet for the entire length of the conductor wrap. Mating surfaces free of solder. The title of the page is Coaxial Connector Center Conductor Solder so this section should reflect solder criteria not wire placement that was addressed in 13.5 The title of the page is Coaxial Connector Center Conductor Solder so this section should reflect solder criteria not wire placement that was addressed in 13.5 Acceptable Class 1,2 Process Indicator Class 3 Solder is present on the surface of the ring but does not prevent assembly of the connecter. Conductor wrap is less than 180 degrees but more than 90 degrees. Conductor wrap of 180 degrees (or more) has solder fillet for 75% of the length of the conductor wrap. Conductor wrap of less than 180 degrees has solder fillet for the complete length of the wrap. Acceptable Class 1 Process Indicator Class 2 Defect Class 3 Conductor does not contact the surface to be soldered for the entire wrap length. The ring (A) has a thin film of solder on the outside surface. With conductor wrap of less than 180 degrees the solder fillet of conductor wrap less than 100% of the length of the conductor wrap. With conductor wrap of 180 degrees or more the solder fillet of conductor wrap is less than 75% of the length of the wrap. Defect Class 1,2,3 Solder on any mating surface. Solder on any surface that prevents assembly of the connector. Wire, insulation, or solder, extends above the ring profile. Insulation is melted or charred (not shown). Wire wrap less than 90 degrees. Defer to Rev C<Aug2012> Defer to Rev C<Aug2012> Defer to Rev C<Aug2012> 6

7 I think there are a couple of problems where we have similar criteria such as: --In 620A, clause adjacent to Figure 14-34, A1, P2, D3, it s a Defect Class 3, if there is a wrap/strap placed over splices or solder ferrules (same in the draft). --In the Ballet Draft we added in clause 9.2.1, a new picture, Figure 9-14 (from L-3)and a new bullet in the Defect Class 123, that states that it s a defect to have a splice or ferrule located under a strain relief clamp. Both of these conflict with , where we have a note that states Shield terminations may be located under the strain relief clamps as long as protection is provided under the clamp, i.e., tape, sleeving or grommet. Shield terminations is pretty broad and covers any type termination. I think this is why we went ahead and added into WS-003, (Internal document), Splice or ferrule under the strain relief is a Defect. IPC/WHMA-A-620A Defer to Rev C Stephen Fribbins, Fribbins Training Services Both situations could cause the same results i.e., shorting, damaged insulation, cold flow etc Change Sealant to adhesive lined or adhesive as appropriate throughout this section: In Australia and Asia we typically use the terms Adhesive Lined as in the Boots and Sleeving section. If this is not changed I am not too concerned. Sleeving/Shrink Tubing Sealant Adhesive Lined John and I got together and looked at Table 19-12, and looked at the tables that were originally used, MIL-T-7928 and MIL-C and the original tables are different for those wire gauges (Table matches). One of the tables didn t address 18 AWG and that is why we have NE in those columns. John can shed more light than I. Defer to Rev C Defer to Rev C Something else--in all instances the Silver machined column matches the stamped contact column after 16 gauge, except the 8 gauge row. There the machined is 220, and the stamped is 225. Is this correct or possibly a typo? Recommended content and pix are at the end of this comment list. ACTION: Garry McGuire, Marshall SFC to do editorial review and provide to IPC <Feb2012> Deferred to Rev C<Aug2012> 7

8 TABLE 4 - RESOLVED BALLOT COMMENTS WITH EDITORIAL OR OTHER CHANGES THAT DID NOT SIGNIFICANTLY AFFECT CRITERIA Source Ref. # Recommendation Reason for Recommendation Resolution all 31. User, Supplier and Manufacturer are defines nouns I would like to Editorial: End-user is either redundant to the defined term see them capitalized throughout the document. or would point to the individual or entity putting the device (1.15, 8.0 ) into service. In some cases we see end-user or end user, where this occurs we would like to see it either replaced by User or define end-user Bob Potysman, Assembletronics Bob Potysman, Assembletronics Terms And Definitions Terms are consistent with the definitions provided by IPC-T-50. For the understanding of this document, selected definitions pertaining specifically to cable and wire harness manufacturing are listed below and in Appendix A. Reflects reality IPC staff - made upper case chapter 1, will scrub all chapters before publication. <Aug2012> Editorial, <Aug2012> Bob Potysman, Assembletronics Editorial note: Change to are listed below, at the beginning of each section or in Appendix A The user (customer) has the opportunity to specify alternate Editorial: for consistency acceptance criteria. Editorial, deleted word Dan Foster, MDA Dan Foster, MDA Dan Foster, MDA Dan Foster, MDA Doug Holand, Ultrax Blen Talbot, L-3 Blen Talbot, L-3 Capitalize User, Supplier, Manufacturer where used as a defined term would eliminate the need to add (customer) to the text The first two paragraphs conflict with the third Conflict within the document. The first two paragraphs state you do not have to calibrate class one products but the third paragraph says you have to have documented calibrated systems for all classes The manufacturer shall [N1D2D3] document and disposition each defect. This conflicts with 001E User concurrence shall [N1D2D3] be required for use-as-is and shall [N1N2D3] be required for repair dispositions Sampling Manufacturers shall [N1D2D3] define a sampling inspection program as part of a documented process control plan Add a table for allowable strand damage to the shield braid on a twisted pair. Existing Table 13-1 is specific to coaxial cables and can t be applied to simple twisted pair with shield. Conflict between the two documents This conflicts with 001E 12.2 for class two J001F draft is N1D2D3 conflicts with class 2 J001F draft is N1P2D Adjacent to Figure 3-2, A123, 3 rd bullet, delete There are Adds no value to the statement. Statement should just say Attached burrs that will not be dislodged during process or operation The word pigtails is used should define what is meant by the term. Better understanding difficult to explain and there isn t a definition in the appendix or IPC-T-50. Conflict removed; changed to N1D2D3<Aug2012> It will remain as N1D2D3; the committee acknowledges that it is different than J001 but these are separate and stand-alone documents.<aug20120> It will remain as N1N2D3 for repair concurrence <Aug2012> No change<aug2012> Not need; chapter 15 Shielding sets the strand damage of Table 13-1 as requirements for this shielding.<aug2012> Editorial, changed The word was deleted<aug2012> 8

9 Vicki Hagen, Delta Group Electronics, Inc. Bob Potysman, Assembletronics Bob Potysman, Assembletronics Barry Morris, ART Vicki Hagen, Delta Group Electronics, Inc. Barry Morris, ART Barry Morris, ART Stephen Fribbins, Fribbins Training Services Stephen Fribbins, Fribbins Training Services Third paragraph Change the word sleeves to devices Consistency throughout the document. Title of clause is Heat Shrinkable Solder Devices. It makes it difficult for those folks that English is a second language to use two different words for the same thing The solder connection wetting angle (solder to lead and Wrong brackets used. solder to terminal) shall not [D1D2D3] exceed 90º Don't delete: Limited solder wicking during tinning or soldering of This is acceptability statement wire is permissible as long as the solder does not extend to a portion of the wire that is required to remain flexible change Defect Class 2,3 to Defect Class 1,2,3 DLF has a few comments without recommendations Resolve DLF comment to match and and 610 where sleeving over solder joint has been specified The reference to additional stress relief criteria shown on the last line on this page is incorrect should be and should be Note 1: A wire that is wrapped more than 360 and remains in contact with the terminal post is considered an overwrap or spiral wrap (see Figure 4-18-A) Note 1 below the table references figure 6-18-A, it should be A The fourth bullet for the target condition references figure 4-26 it should be figure Figure 4-41 Defect 123, change statement to read the inverse of acceptable 123: Lead or wire end not discernible on the exit side of the terminal Wrong figure referenced. A123 adjacent to Figure 4-43, states that the minimum requirement is that: the lead or wire is discernible on the exit side of terminal. This creates a conflict because the defect infers flush is acceptable which conflicts with the acceptable statement. Flush may not be discernible. Editorial, changed fixed Committee did not accept; this is covered elsewhere<aug2012> D1,2,3 changed Feb 2012 All DLF comments are resolved fixed fixed fixed fixed If it cannot be discerned as flush it would not be acceptable Combine the two Defect 123, adjacent to Figure Both statements are a defect all three classes. Editorial, completed In Table 4-5, bottom row add nonadjacent after two Consistency, should be and contact two nonadjacent sides of the terminal. It makes it difficult for those folks that English is a second language to use two different words for the same thing Change to: Acceptable - Class 1 Defect - Class 2,3 Wire does not contact 2 nonadjacent sides of the terminal when wire wrap is less than Add in: Acceptable - Class 2,3 Wire wrap equal to or greater than 90 or wire contacts two sides of the terminal. Acceptable - Class 1 Defect - Class 2,3 Wire does not contact 2 nonadjacent sides of the terminal when wire wrap is less than 90 0 is not consistent with Table 4-5 No A2 A3, although shown in Table 4-5 Changed to non-common modification<aug2012> modification<aug2012> 9

10 In the Target 123, second bullet change the word opposite to nonadjacent In Defect 123, adjacent to Figure 4-70 Add (A) after any 2 terminals (A) The seventh paragraph needs further explanation of what is meant by support filler. Consistency in the document.. It makes it difficult for those folks that English is a second language to use two different words for the same thing. There is a key A in Figure 4-70, that is not referenced in the text. This needs to be explained so that all users understand what is meant. modification<aug2012> The arrows are referenced in the bullet. Vicki Hagen, Delta Group Electronics, Inc In the 12 th paragraph delete As an exception from the first paragraph, Then move the paragraph above paragraph 10. Is this the addition of heat shrink applied to a wire in the area of the insulation support tabs on a stamped and formed, open barrel terminal to increase its size in order to meet acceptance criteria? There is no exception. Rearranging the paragraphs makes a better flow Add key to picture Reference is made to D and C in the text but not included in the illustration These criteria apply to stamped and formed contact with insulation support (see Figure 5-14) or without (see Figure 5-15). Missing parentheses. The exception is to the clause above this statement requiring use of the terminal mfrs documented tooling. Deleted "D" and "C" from bullets; the words adequately convey the intent. fixed David McCary And 5.2.2, duplicate pictures with different criteria Fixed in ballot Figure 5-69 A123, 3 rd bullet add to the end and does not violate electrical clearance Strands one wire diameter in length beyond the contact in some instances may violate electrical clearance. The Defect bullet adequately covers this "how to" should be deferred tot he handbook Add an introduction that states: When CMA build-up is required by engineering documentation, the criteria of this section apply. When CMA build-up is required `it may be achieved by using one of the following methods: The conductor folded or bent back to achieve the correct CMA. The conductor area is increased by the use of bare (noninsulated) filler conductors as required to achieve the correct CMA build-up. A combination of both the foldback and the filler method are used to achieve the correct CMA buildup. Special CMA Adaptor Bushings are used when called out on the assembly documentation. (Use of these adaptors will usually require special additional insulating coverage requirements.) Delete everything in the Target but the last bullet. It s an engineering function to determine the appropriate wire gauge and method of CMA build-up. This is not an operator function and we shouldn t infer that it is. Most of the Target Information is how too design and should be deleted. If engineering determines that a foldback and a cretin gauge filler wire is required or if only a filler wire is required, it should be listed as a note on the engineering drawing. Maybe this should be located at the beginning of Section 5 and reworded so that it can apply anytime CMA build-up is required. Or create a new section and move all CMA build-up material for both Stamped and Formed and Machined Contacts into one section. 10

11 Barry Morris, ART Stephen Fribbins, Fribbins Training Services Add an introduction: These ferrules are intended to terminate stranded wire for insertion into terminal blocks and are available insulated and non-insulated. Add usage information The figure below 5-74 is shown as figure 5-5, it should be figure First paragraph replace the word connector with the word What is shown in Figure 6-20 is a discrete contact not a contact connector Add a key to Figure 6-20 to identify the side beams. The side beams are referenced in the Defect 12, Figure 6-34, but not in the main figure where all other parts of the contact are identified Change: Acceptable Class 1,2,3 Wire extends at least 50% of the distance between the contact edge and the back wall of the connector. To: Length (L) of the wire past the electrical (second) contact is equal or greater than 50% overall wire diameter Change the Target to: The wire ends are from flush to less than 0.5 mm [0.02 in] past the termination plate (1) Figure 6-46 After Wire recessed add (not visible in the free space past the cover plate) Add a defect 123 Terminals do not meet connector manufacture s crimp height specification. These two dot points in are inconsistent: Acceptable - Class 1,2,3 Wire extends at least 50% of the distance between the contact edge and the back wall of the connector. Defect - Class 1,2,3 Length (L) of the wire past the electrical (second) contact is less than 50% overall wire diameter. Clarity and readability Clarification The inverse of the acceptable 2 nd bullet should be a defect for all classes. Editorial, added the first part of the sentence; did not add info about the different kinds of ferrules that are available. fixed Editorial, changed The side beams are adequately identified the only place they are mentioned. A1,2,3 is stating the desirable condition but it doesn't become a defect unless the condition is as stated in the defect. The 50% distance to the back wall can vary but the concern is that the wire extension through the electrical (back) slot is at least 50% D. Not accepted<aug2012> modification<aug2012) Committee determined this is not needed because the last defect bullet covers the requirement<aug2012) 11

12 Add the key number in the criteria statements i.e., Target - Class 1,2,3 All wires are bottomed in connector and visible through the front of the connector. The primary strain relief (4)is crimped tightly against the cable jacket. The cable jacket extends past the point of the strain relief (4). For connector without a loading bar (1), the secondary strain Relief (3) is crimped so that it is in contact with the insulation. The terminals (5) are crimped so that no parts of the terminals (5) are above the plane created by the top of the plastic dividers between the Terminals (5). Easier to relate to the illustration when the keys are used in the text. Editorial; most changes made. A feature is only referenced to a key number the first time it appears in this clause. Acceptable - Class 1,2,3 Wires are not bottomed but all are within 0.5 mm [0.02 in] (2) or less of the end wall and all are inserted at least past the terminal (5). Terminals meet the connector manufacturer s crimp height specification. Defect - Class 1,2,3 The primary strain relief (4) is not in tight contact against the cable jacket or is not latched. The cable jacket does not extend past the primary strain Relief (4). Wire ends are not within 0.5 mm [0.02 in] (2)or less of the contact end wall or are not inserted past the terminal (5). All wire ends are not visible through the face of the connector. Connector without loading bar (1) the secondary strain relief (3) is not in contact with the wires or is not latched. The terminals (5)are not crimped sufficiently and extend above the plane created by the top of the plastic dividers between the terminals (5) Replace all occurrences of the word contacts with Terminals (6 places) Should be consistent and keep the term the same as what is used in the key of Figure 6-50 Editorial, changed Reword 5 th paragraph to: Solder shall wet all elements of the termination forming a fillet joining the wires for the length of the overlapped area of the splice. Individual strands should remain visible. Its difficult for those folks that English is a second language to use two different words for the same thing. Statement is incomplete (see the published 620A, 8.1.4) This paragraph was changed Sep

13 Vicki Hagen, Delta Group Electronics, Inc. Vicki Hagen, Delta Group Electronics, Inc. Randy McNutt, NGC Vicki Hagen, Delta Group Electronics, Inc. Barry Morris, ART Vicki Hagen, Delta Group Electronics, Inc under Acceptabl e-class 1,2, under Acceptabl e-class 1,2,3 74. Conductor strands form a smooth joined section. 75. Sleeve or wire insulation is slightly discolored but not burned or charred Figure 8-24 Delete Process Indicator 23 and move criteria to Defect A123 8 th bullet delete from the end of the bullet and the cut end is sealed. Also A1P2D3 Delete 2 nd bullet Statement is listed twice, delete one statement. Statement is listed twice but with different wording, delete one statement. Picture is actually showing reflowed solder under the sleeving and was a defect all classes in rev A. I don t understand why sealing the cut end is imposed here and not for an unused wire (14.3.4), why is this now a requirement?. Could also drive costs by adding material and processing to the product? fixed fixed This paragraph was changed Sep The committee discussed why seals are required and did not agree to delete the bullets related to seals.<aug2012> Acceptable Class 1, 2, 3: Remove new 10 th bullet Duplicate of requirement in 3 rd bullet Editorial, corrected under Defect Class 1,2,3 79. Wire strands are exposed (not shown). Missing r in strands. fixed The third, single line, paragraph references 16.3, it should be 16.2 fixed Figure 8-42 Acceptable 123, 5th Bullet makes no sense to reference Figure Delete the bullet Target 123 delete Bullet 6, If applicable, meltable sealing rings have flowed. I don t understand why sealing the cut end is imposed here and not for an unused wire (14.3.4), why is this now a requirement?. Could also drive costs by adding material and processing to the product. Bullet 6 adequately addresses the criteria for end splices Typically sleeving with meltable sealing rings does not apply or used with this type of splices. Correct reference is Committee did not agree to remove; the if applicable words establish when this is needed<aug2012> Delete the 4 th paragraph Why would one use this and then plug the end? Seals are required; this was not accepted<aug2012) Hardware stack-up for mounted connectors may be varied The change from flush to minus 0.75 mm below the face of Documents occasionally in order to locate the face of the jackpost flush ±0.75 mm the jackpost to +/- 0.75mm from flush does not align with leapfrog; this is newer [0.030 in] with the face of the connector. IPC-A-610E. The original wording was very clear and now technology. The next this is very confusing. revision of 610 will address this. 13

14 Vicki Hagen, Delta Group Electronics, Inc. Barry Morris, ART Barry Morris, ART Barry Morris, ART Barry Morris, ART Barry Morris, ART Vicki Hagen, Delta Group Barry Morris, ART Barry Morris, ART Add: Change the second paragraph to indicate that the locking teeth are not visually inspectable; and should be determined by process control. It should be noted that the interlocking teeth are not visible that the locking ring has been removed Figure 10-4 is shown with Acceptable-Class 1,2,3 and then the same photo is shown as Figure 10-7 as a Defect-Class 1,2, Remove the words Braid Float and Sleeve float from below figure Acceptable condition, third bullet references figure 10-12, this should reference figure Acceptable condition, fourth bullet references figure 10-13, either remove the reference or reference figure or Correct Table 3-1, in the bottom three rows in the Center Conductor, Crimped an Soldered Terminations Columns replace the numbers with NA Remove the * from the word manufacture*s published requirements Below fig remove the number 69. Renumber the figure below to figure (incorrectly shown as 13-67) Figure the bubble labeled B that is pointing to the contact matting tip should be D Figure 14-3 Figure The pictures give the impression that the interlocking teeth are visible when they are not because they are covered by the locking ring. Figure 10-4 should be deleted. Figure 10.6 shows voids Figure shows streaking, figure are air marks or maybe voids Figures 10-4 and are more like cosmetic anomalies, whereas figure show streaking Coaxial cable typically does not have large numbers of strands in the center conductor. NOTE: John Laser researched suppliers and center conductor strands are either 7 or 19 strands. Correct error in picture key 94. Redraw the graphic for the Surgeons knot The graphic for the Surgeons knot is still incorrect. Yes I know it s been like that for many years, but we do have the opportunity to get it right this time 95. Remove the note above figure which states: Figures through provide examples of typically acceptable restraining configurations. Or remove figure from the page Delete the third bullet from Defect Class 2,3. Add the following to 14.1, introduction. Lacing Should not be trimmed either too close to the knot or too far away from the knot. The excess lacing should be trimmed between 6 mm [.25 in] to 13 mm [.5 in] in length. According to the note above the figure this is a typical acceptable restraining configuration. It is not acceptable for class 2 and 3 (it does not have double lock stitches) This maintains the intent of the defect criteria without requiring the user to measure the excess lacing length. Moving the figures and including them as guidance is also necessary for consistency. modification<aug2012) fixed fixed fixed Committee did not accept the criteria<aug2012> fixed fixed fixed Reviewed knot on medical dictionary; we are showing surgeon s knot There is no requirement for double lock stitch. Not accepted because with lacing it could come loose later<aug2012> Add a bullet under the Defect: Knot not secure. Another option would be to make the third bullet a Process Move Figure 14-8 to the introduction and included in with Figures Indicator Class 2, , 14-2, 14-3 and 14-8 are provided as guidance for applying lacing 14

15 Vicki Hagen, Delta Group Electronics, Inc. Vicki Hagen, Delta Group Electronics, Inc. Vicki Hagen, Delta Group Electronics, Inc. Vicki Hagen, Delta Group Electronics, Inc. Barry Morris, ART Garry McGuire, MSFC Randy McNutt, NGC Vicki Hagen, Delta Group Electronics, Inc. Randy McNutt, NGC Barry Morris, John Vickers, ART Cable tied with a bowknot or other non-locking knot (Figure 14-10) Note: Figures through provide examples of typically acceptable restraining configurations Routing Bend Radius Table 14-1 does not align with the IPC-A-610E Table 4-1which is a better table, more complete Wire may extend straight down length of bundle (Figure 14-32) or be folded back (Figure 14-31) The figure referenced in the first acceptable bullet are incorrect The first reference should be (Figure 14-33) and the second reference should be (Figure 14-32) Delete solder/heat shrinkable solder device from the title and add a paragraph under the title that points to for criteria specific to heat shrinkable solder devices Change throughout Band-It Clamp with Metal shield termination band Conflict between the measurements of acceptable which states there is a overlap of 40 mm and defect which states that it is a defect for class 3 if the overlap is less then 38 mm Revise 2nd paragraph to read: All hardware shall [D1D2D3] be assembled in accordance with the supplier s (1.7) specifications, or documented process procedure The first Acceptable bullet : Remove words after the comma but a few strands have unravelled in tightening the screw. Wrong figure is referenced; figure should be Figure numbers have changed it should be through Use the same table as in IPC-A-610E. Figures have changed to and This clause s title makes this specific to heat shrinkable solder devices. The method is often done by soldering a lead to the shield and then covering with shrink sleeving (not a solder sleeve). Band-it is a registered trademark of Band-It IDEX Corp., so we should use the generic term used in AS There is more than one company that makes these type bands and as written their bands many not be inspected. fixed Fixed fixed Fixed modification<aug 2012> Corrected<Aug2012> For Defect Class 3 if the overlap is less than 40 mm. Fixed to 38 As written any company with an internal process document can t use it. I know that many of the major airframe manufactures use common tooling to install multiple vendor parts and as such part of the qualification for each vendor to supply parts is that they work with the common set of tools, even if not their own or documented as such. This is more accurately described in the second Acceptable bullet Less than 1/3 of the wire diameter protrudes from under the screw Accepted<Aug2012> Accepted<Aug2012> 15

16 TABLE 5 - ALL COMMENTS RESOLVED AT PREVIOUS MEETINGS IPC/WHMA-A-620A Source Ref. # Recommendation Reason for Recommendation Resolution 620AS meeting All 107. All references to Table 3-1 should be changed to 3.2; there is amplifying information that needs to be considered in addition to the table. Table 3-1 doesn t go away. IPC ACTION to scrub document; change references for strand damage from Table 3-1 to clause 3.2<Febh2012> Completed<Jun2012> Table 1-2, need dimensions for last two rows ACTION: Brett Miller, USA Harness to provide dimensions:<feb2012> Completed<Jun2012> 620AS meeting Add Defect: There is residual twist (over-twist, kinking, pig-tails) in individual wires Figure 4-1 Create a new figure that is not specific to printed circuit boards. The new figure should include a defect of >90 wetting angle. The current Figure is not representative of the technology this standard represents. Criteria added; need better pix. ACTION: Jon Vermillion to provide pix <Jan2012> Completed <Jun2012> There is a Defect Class 1,2,3 620A, and Dan Foster, MDA John VanHaren, Unison Industries Committee meeting This figure should include an example of a defect condition. It may also help if the entire figure was replaced by something more applicable to cables or harnesses ( D shows a solder mask defined pad not something you d see in a harness) wetting angle exceeding 90º (Figure 4-1, C, D) when it is created by the solder contour extending over the edge of the solderable termination area. <DLF Not sure D applies. Recommend leave D out of text and change pix> The section heading states that this section is for both insulated and uninsulated terminals. The crimp of an uninsulated terminal looks quite different than those of an insulated type, especially the terminals which do not capture the wire insulation. To associate the figure with something more akin to a cable assembly rather than a printed circuit assembly Close out item from 001E 610E 620B alignment This is in the Feb 2012 draft STAFF ACTION 7 Apr 10 Completed <Jun2012> IPC ACTION to correct figure 4-1 <Feb 2012> Completed <Jun2012> ACTION: anyone on committee to provide usable photos <Sep2010> Completed <Jun2012> In the next revision, if possible, can there be photos of what is acceptable, and what is not, for uninsulated terminals without the wire insulation capture? ACTION Committee members are requested to provide stamped and formed terminal insulation clearance pictures for this new section.<june2011> Completed <Jun2012> 16

17 Committee meeting Rick Hawthorne Tyco Rob Boyd, Schleuniger Inc. Heather Farren, Midcon Cables Co. Rhonda IPC/WHMA-A-620A IPC Action to modify Figure 5-32 Completed <Jun2012> Missing all illustrations which are included in the PPT file Add illustrations IPC Action Suitable pictures added<jun2012> Are pictures needed for this? I would like to add what we call the Butt-End Splice, this is a hand soldered splice with two or more conductors, but the conductors are all going the same direction and the stripped ends lay parallel to each other. (Like Figure 8-14 on page 8-7 of the A revision but without the white conductor.) now We use this type of splice in many of our cable harness assemblies and need something for our operators to reference. Added<Feb2012> ACTION IPC TO REPLICATE IN Bob Cooke to provide additional pix. Completed <Jun2012> 117. Add new Picture5.jpg position to be determined. Use this in new flashing, replace 620A with this, crop off right side, enlarge and circle flash <June 2011> Completed<Jun2012> Meeting 1/ Associated with Figure IPC ACTION TO REMOVE TABS FROM FIGURE<Feb2012> Completed<Jun2012> Rich Broga, Radiall The criteria for Conformable cable "very tightly woven braid outer shield" is the same as in the section. New criteria and pix for conformable cable solder coverage Picture B1 is acceptable for Class 1,2 Process Indicator - Class 3. Slight depression in solder no void in braid. Picture A3 is a defect - Class 1,2,3 Voids in solder. Photos added to document IPC Action to add split ; current criteria and this new becomes A1,2,3 no voids D1,2,3 voids Completed <June2012> Lisa Maciolek, Raytheon T-Flex cable falls under The difference between T-Flex and Conformable cable is that conformable is a braided cable that is completely immersed in solder when the cable is produced. T-Flex is made as a Flex cable and at connector termination the ends are dipped to receive a Semi-Rigid type of connector termination Defect Class 1,2,3 bullet one needs clarification. Compare terminology to figure was this meant to read Shield extends <50% over cone? Not clear IPC ACTION TO MODIFY FIGS & 76 AS NOTED IN THE DRAFT<Apr2011> Completed<Jun2012> 17

18 Blen Talbot, L We need to see if we can incorporate these pictures into 610, 4.4.X and 620, 14.1.X. These are pictures of the newer flat (low profile) ties, where the end of the strap comes out the side of the locking device rather than the top. Pictures provided IPC/WHMA-A-620A GRAPHICS GROUP Completed<Jun2012> IPC Staff Remove inset from 620A Fig 14-4 and put it into Fig 14-5 IPC ACTION Completed<Jun2012> 620AS meeting Fig 14-3 add clove hitch under the surgeon knot so it shows as a complete connection, not just the finishing knot. IPC ACTION Couldn t figure out how to Lisa Maciolek, Raytheon Rob Boyd, Schleuniger Inc. G. H. A Gosenshuis, Thales Nederland Rob Boyd, Schleuniger Inc. draw this; defer to Rev C Add photo or description for Containment Loom Not sure everyone knows what it is Changed header name to make this easier to understand.<jan2011> Complete Pull Test Value List is provided at end of this comment list. Excel version can be provided if necessary. The test force values for the stamped contacts and terminal lugs in Table have too high value. For this kind of crimp components we use values according to IEC International Standard Solderless connections - Part 2: Crimped connections - General requirements, test methods and practical guidance. The values in 620A are about 50% higher than the machined connector contact. The table from the IEC document was provided by the commenter Boyd: Table 9-12 uses Mil-spec pull forces which are considerably higher than other specs such as UL or IEC. Although the user and mfr are able to agree on different values, this can cause confusion and the user might always expect the higher values listed in the A620. For some applications, it may be difficult to achieve these values. ACTION: Brett Miller to contact Rob Boyd, confirm values and get table in Excel<Feb2012> Completed <Jun2012> IPC Staff Append A 126. Boyd: Add more columns for to show other specs such as UL and IEC. Forces listed at end of this comment list. This would make it clear that different standards exist and an agreement has to be made between the user and mfr. It should be indicated however that the SAE list shall be used by class 3. If anyone has additional recommended terms they need to be submitted no later than 30 March. IPC Staff Append B 127. Recommend to delete these four pages of metric conversion table. In today s technology most users have smart phones, computers or other means to quickly make any of these conversions. This appendix isn t referenced anyplace in the Standard. To publish printed is just killing trees. IPC Staff Append C Rename to Append B if appropriate. IPC Staff Action to update to 128. final tables in Chapter 19 after ballot. Cosmetic anomalies from Chapter 10 have been incorporated into this Appendix. Completed<Jun2012> Accepted<Feb2012> IPC ACTION Completed <Jun2012> 18

19 Les Bogert, Bechtel Les Bogert, Bechtel Add Health, Safety, and Environment section: The use of some materials and processes used to meet the requirements of this standard may be hazardous, or may cause injury. To provide for personnel and environmental safety, follow the applicable plant requirements and government regulations Revise 620 Section 3 to change the title to Handling & Preparation and add a Handling section 3.1. Re-number the existing paragraphs as 3.2 through 3.6. Action: IPC and Les Bogert, Bechtel Plant Machinery to develop proposal for task group review<april2010> Recommended 3.1 text is at the end of this comment list Revise 620 Forward section to add the requirements of 001, paragraph for consistency with 001. There is no section currently for Health, Safety, and Environment. Since cable or wire harness assemblies may contain integral sub-assemblies containing ESD sensitive items, or otherwise fiber optic or coaxial cables that could be damaged from improper handling practices, it is appropriate to add a handling section to 620. To preclude the need to re-number all the sections in 620, I recommend the new section be added to existing section 3. Recommended for consistency with 001. Added, combined with new statement regarding eating, drinking<apr2010> Deferred to HDBK-620 <Apr2011> <June 2011> Les Bogert, Bechtel Les Bogert, Bechtel Les Bogert, Bechtel Action from Teresa Rowe & Bettye Causion, AAI & Dan Foster, MDA completed Sep2010: XXXX Field Assembly Operations Field Assembly Operations In field Assembly operations on Class 3 products where the controlled environmental conditions required by this standard cannot be effectively achieved, precautions shall [D1D2D3] be taken to maximize the quality of solder connections and minimize the effects of the uncontrolled environment on the operation being performed on the hardware Revise 620 to add the flow down requirements of 001, paragraph Revise 620 to add the requirements of 001, paragraph 1.10, for consistency with Revise 620 Section 1 to include the 001, paragraph 11.3 criteria. Revise 620 section 1 to include the 001 requirements pertaining to the use of SPC for consistency with 001 in event the supplier elects to implement an SPC process control program. Although 001 does not mandate an SPC program, it does mandate compliance with the 001 SPC requirements in event the supplier elects to implement an SPC program. Recommended for consistency with 001. Recommended for consistency with 001. Recommended for consistency with 001. Accepted to add<april 2010> Accepted to add<april 2010> Action: Teresa Rowe, AAI Corp, Dan Foster, DAI, Les Bogert Bechtel to develop proposed wording for committee review.<april 2010> Accepted as shown in the draft<jun2011> Les Bogert, Bechtel Revise 620, paragraph 1.1 to add the requirements of 001E, paragraph 11.3, for consistency with Revise 620, Section 1 to include the 001, paragraph 12.3 requirement. Required for consistency with 001 and cleaning should be performed after any rework or repair to ensure all traces of any detrimental contamination or foreign material is removed. 19 Action: Jeff Rawlings,, Dan Foster, DAI, Teresa Rowe, AAI, Les Bogert, Bechtel, to propose global reorganization of rework/repair criteria. Accepted as shown in the draft<jun2011>