1KSMB Series. Transient Voltage Suppression Diodes. Surface Mount 1000W > 1KSMB series. Uni-directional. Description

Transcription

1 Surface Mount W > KSMB series KSMB Series RoHS Pb e3 Uni-directional Description Bi-directional The KSMB series is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. Features Agency Approvals AGENCY Maximum Ratings and Thermal Characteristics (T A =25 O C unless otherwise noted Parameter Symbol Value Unit Peak Pulse Power Dissipation at T A =25ºC by /µs Waveform P PPM W (Fig.2(Note, (Note 2 Power Dissipation on Infinite Heat Sink at T L =5 O C P D 5. W Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3 I FSM 2 A Maximum Instantaneous Forward Voltage at 5A for Unidirectional V F 3.5 V Only Operating Temperature Range T J -65 to 5 C Storage Temperature Range T STG -65 to 75 C Typical Thermal Resistance Junction to Lead Typical Thermal Resistance Junction to Ambient AGENCY FILE NUMBER E2353 R θjl 2 C/W R θja C/W Notes:. Non-repetitive current pulse, per Fig. 4 and derated above T J (initial =25 O C per Fig Mounted on copper pad area of.2x.2 (5. x 5.mm to each terminal. 3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only, duty cycle=4 per minute maximum. Functional Diagram Bi-directional W peak pulse power capability at /μs waveform, repetition rate (duty cycles:.% For surface mounted applications to optimize board space Low profile package Typical failure mode is short from over-specified voltage or current Whisker test is conducted based on JEDEC JESD2A per its table 4a and 4c IEC ESD 3kV(Air, 3kV (Contact ESD protection of data lines in accordance with IEC EFT protection of data lines in accordance with IEC Built-in strain relief V T J = V C x (+αt x (T J - 25 (αt:temperature Coefficient, typical value is.% Glass passivated chip junction Fast response time: typically less than.ps from V to BV min Excellent clamping capability Low incremental surge resistance Typical I R less than μa when V BR max>2v High temperature to reflow soldering guaranteed: 26 C/4sec Plastic package is flammability rated V- per Underwriters Laboratories Meet MSL level, per J-STD-2, LF maximun peak of 26 C Matte tin lead free Plated Available in breakdown Voltage from 6.8V to 8V specially designed for automotive applications Offers high-surge rating in compact package: bridges the gap between 6W and.5kw Halogen free and RoHS compliant Pb-free E3 means 2nd level interconnect is Pb-free and the terminal finish material is tin(sn (IPC/JEDEC J-STD- 69A. Applications TVS devices are ideal for the protection of I/O Interfaces, V CC bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications. Additional Infomarion Cathode Anode Uni-directional Datasheet Resources Samples

2 Surface Mount W > KSMB series Electrical Characteristics (T A =25 C unless otherwise noted Part Number (Uni Part Number (Bi Marking Reverse Stand off Voltage V R (Volts Breakdown Voltage V BR I T UNI BI MIN MAX Test Current I T (ma Maximum Clamping Voltage V I pp (V Maximum Peak Pulse Current I pp (A Maximum Reverse Leakage I V R (µa KSMB6.8A KSMB6.8CA AA NA x KSMB7.5A KSMB7.5CA AB NB x KSMB8.2A KSMB8.2CA AC NC x KSMB9.A KSMB9.CA AD ND x KSMBA KSMBCA AE NE x KSMBA KSMBCA AF NF x KSMB2A KSMB2CA AG NG x KSMB3A KSMB3CA AH NH x KSMB5A KSMB5CA AI NI x KSMB6A KSMB6CA AJ NJ x KSMB8A KSMB8CA AK NK x KSMB2A KSMB2CA AL NL x KSMB22A KSMB22CA AM NM x KSMB24A KSMB24CA AN NN x KSMB27A KSMB27CA AO NO x KSMB3A KSMB3CA AP NP x KSMB33A KSMB33CA AQ NQ x KSMB36A KSMB36CA AR NR x KSMB39A KSMB39CA AS NS x KSMB43A KSMB43CA AT NT x KSMB47A KSMB47CA AU NU x KSMB5A KSMB5CA AV NV x KSMB56A KSMB56CA AW NW x KSMB62A KSMB62CA AX NX x KSMB68A KSMB68CA AY NY x KSMB75A KSMB75CA AZ NZ x KSMB82A KSMB82CA BA OA x KSMB9A KSMB9CA BB OB x KSMBA KSMBCA BC OC x KSMBA KSMBCA BD OD x KSMB2A KSMB2CA BE OE x KSMB3A KSMB3CA BF OF x KSMB5A KSMB5CA BG OG x KSMB6A KSMB6CA BH OH x KSMB7A KSMB7CA BI OI x KSMB8A KSMB8CA BJ OJ x For bidirectional type having V R of volts and less, the I R limit is double. For parts without A V BR is ± % and V C is 5% higher than with A parts. Agency Approval

3 Surface Mount W > KSMB series I-V Curve Characteristics Uni-directional Bi-directional Ipp Vc VBR VR IR IT VF V Vc VBR VR IT IR IR IT VRVBR Vc V Ipp Ipp P PPM Peak Pulse Power Dissipation -- Max power dissipation V R Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation V BR Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (I T V C Clamping Voltage -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current I R V F Reverse Leakage Current -- Current measured at V R Forward Voltage Drop for Uni-directional Ratings and Characteristic Curves (T A =25 C unless otherwise noted Figure - TVS Transients Clamping Waveform Figure 2 - Peak Pulse Power Rating Curve Voltage Transients TJ initial = Tamb Voltage or Current Voltage Across TVS Current Through TVS P PPM -Peak Pulse Power (kw.2x.2" (5.x5.mm Copper Pad Area... Time t d -Pulse Width (ms continues on next page.

4 Surface Mount W > KSMB series Ratings and Characteristic Curves (T A =25 C unless otherwise noted (Continued Figure 3 - Peak Pulse Power Derating Curve Figure 4 - Pulse Waveform Peak Pulse Power (P PP or Current (I PP Derating in Percentage % T J - Initial Junction Temperature (ºC I PPM - Peak Pulse Current, % I RSM 5 5 td tr=µsec Peak Value IPPM Half Value IPPM 2 IPPM ( TJ=25 C Pulse Width(td is defined as the point where the peak current decays to 5% of IPPM /µsec. Waveform as defined by R.E.A t-time (ms Figure 5 - Typical Junction Capacitance Figure 6 - Typical Transient Thermal Impedance Cj (pf R Bi-directional V=V R Uni-directional V=V Tj=25C f=.mhz Vsig=5mVp-p.... V BR - Reverse Breakdown Voltage (V Transient Thermal Impedance ( C/W.... T -Pulse Duration (s P Figure 7 - Maximum Non-Repetitive Peak Forward Surge Current Uni-Directional Only Figure 8 - Peak Forward Voltage Drop vs Peak Forward Current (Typical Values 2 I FSM - Peak Forward Surge Current (A IF - Peak Forward Current(A. Number of Cycles at 6 Hz V F -Peak Forward Voltage(V

5 Temperature (T Transient Voltage Suppression Diodes Surface Mount W > KSMB series Soldering Parameters Reflow Condition Pre Heat Lead free assembly - Temperature Min (T s(min 5 C - Temperature Max (T s(max 2 C - Time (min to max (t s 6 8 secs Average ramp up rate (Liquidus Temp (T A to peak T S(max to T A - Ramp-up Rate Reflow - Temperature (T A (Liquidus 27 C 3 C/second max 3 C/second max - Time (min to max (t s 6 5 seconds Peak Temperature (T P 26 +/-5 C Time within 5 C of actual peak Temperature (t p 2 4 seconds Ramp-down Rate 6 C/second max Time 25 C to peak Temperature (T P 8 minutes Max. Do not exceed 26 C T P T L T s(max T s(min 25 C t s Preheat t 25 C to Peak Environmental Specifications High Temp. Storage Ramp-up Time (t t p JESD22-A3 t L Critical Zone T L to T P Ramp-down Physical Specifications Weight Case Polarity.3 ounce,.93 grams JEDEC DO24AA. Molded plastic body over glass passivated junction Color band denotes cathode except Bidirectional. HTRB JESD22-A8 Temperature Cycling JESD22-A4 MSL JEDEC-J-STD-2, Level H3TRB JESD22-A Terminal Matte Tin-plated leads, Solderable per JESD22-B2 RSH JESD22-A Dimensions I A D E DO-24AA (SMB J-Bend J Cathode Band (for Uni-directional products only B F G K L H C Dimensions Inches Millimeters Min Max Min Max A B C D E F G H I J K L Solder Pads (all dimensions in mm

6 Surface Mount W > KSMB series Part Numbering System Part Marking System KSMB XXX C A Cathode Band (for Uni-directional products only 5% V BR VOLTAGE TOLERANCE F Littelfuse Logo SERIES V BR VOLTAGE BI-DIRECTIONAL XX YMXXX Marking Code Trace Code Marking Y:Year Code M: Month Code XXX: Lot Code Packaging Part number Component Package Quantity Packaging Option Packaging Specification KSMBxxxXX DO-24AA 3 Tape & Reel - 2mm tape/3 reel EIA STD RS-48 Tape and Reel Specification.57 (4..47 (2. Cathode.35 (8..59 DIA (.5 Cover tape.8 (2.2 Arbor Hole Dia. 3. (33 Dimensions are in inches (and millimeters..49 (2.5 Direction of Feed