PROTECTIO PRODUCTS - RailClamp Description RailClamp TVS arrays are ultra low capacitance ESD protection devices designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). The RClamp 52P has a maximum capacitance of only.5pf. This allows it to be used on circuits operating in excess of 3GHz without signal attenuation. They may be used to meet the ESD iunity requirements of IEC 6-4-2, Level 4 (±5kV air, ±8kV contact discharge). The RClamp52P is in a 2-pin SLP6P2 package measuring. x.6 x.5. The leads are spaced at a pitch of.65 and feature a lead-free finish. Each device will protect one high-speed line operating at 5 volts. It gives the designer the flexibility to protect single lines in applications where arrays are not practical. The combination of small size, low capacitance, and high ESD surge capability makes them ideal for use in applications such as cellular phones and digital video interfaces. RClamp52P Ultra-Low Capacitance -Line ESD protection PRELIMIARY Features Transient protection for data lines to IEC 6-4-2 (ESD) ±5kV (air), ±8kV (contact) IEC 6-4-4 (EFT) 4A (tp = 5/5ns) Cable Discharge Event (CDE) Ultra-small package (. x.6 x.5) Protects one data or I/O line Low capacitance:.5pf Low clamping voltage Low operating voltage: 5.V Solid-state silicon-avalanche technology Mechanical Characteristics SLP6P2 package Molding compound flaability rating: UL 94V- Marking: Marking code Packaging: Tape and Reel Lead Finish: ipdau Pb-Free, Halogen Free, RoHS/WEEE Compliant Applications Cellular Handsets & Accessories Digital Visual Interface (DVI) Display Port MDDI Ports USB Ports PCI Express Serial ATA Dimensions Schematic & Pin Configuration..65.6.5 Revision 5/8/22 ominal Dimensions () SLP6P2 (Bottom View)
PROTECTIO PRODUCTS Absolute Maximum Rating RClamp52P PRELIMIARY Rating Symbol Value Units Peak Pulse Power (tp = 8/2μs) M aximum Peak Pulse Current ( tp = 8/2μs) P pk Watts I pp 4 Amps ESD per IEC 6-4-2 ESD per IEC 6-4-2 (Air) (Contact) V ESD +/- 5 +/- 8 kv Operating Temperature T J -55 to +25 C Storage Temperature T STG 55 to +5 - C Electrical Characteristics (T=25 o C) Parameter Symbol Conditions Minimum Typical Maximum Units Reverse Stand-Off Voltage V RWM 5 V Reverse Breakdown Voltage V R B I t = ma 6 9. 3 V Reverse Leakage Current I R V RWM = 5V, T=25 C.25 μa Clamping Voltage V C I PP = A, tp = 8/2μs 5 V Clamping Voltage V C I PP = 4A, tp = 8/2μs 25 V V Junction Capacitance C R = V, f = MHz.3.5 pf j 22 Semtech Corporation 2
RClamp52P PROTECTIO PRODUCTS Typical Characteristics on-repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve PRELIMIARY 2 Peak Pulse Power - P PP (kw). % of Rated Power or I PP 8 6 4 2.. Pulse Duration - tp (µs) Clamping Voltage vs. Peak Pulse Current DR442-25 5 75 25 5 Ambient Temperature - T A ( O C) TLP Characteristic (Positive Pulse) DR452:25:25:5 25 3 Clamping Voltage - V C (V) 2 5 5 Waveform Parameters: tr = 8µs td = 2µs 2 3 4 5 Peak Pulse Current - I PP (A) TLP Current (A) 25 2 5 R DY =.9 Ohms TLP 5 Parameters: tp = ns tr = 2ps 2 3 4 5 TLP Voltage (V) ormalized Capacitance vs. Reverse Voltage Typical Insertion Loss (S2) 2 f = MHz CH S2 LOG 6 db / REF db : -.798 db 9 MHz C J (V R ) / C J (V R =).5.5 db -6 db -2 db -8 db -24 db -3 db -36 db 2 3 4 2: -.458 db. GHz 3: -.225 db.8 GHz 4: -.3347 db 2.5 GHz -42 db 2 3 4 5 Reverse Voltage - V R (V) START. 3 MHz STOP 3. MHz 22 Semtech Corporation 3-48 db MHz MHz MHz GHz 3 GHz
RClamp52P PROTECTIO PRODUCTS Typical Characteristics PRELIMIARY ESD Clamping (+8kV Contact per IEC 6-4-2) ESD Clamping (-8kV Contact per IEC 6-4-2) Voltage (V) 35 3 25 2 5 T A = 25 o C Corrected for 2dB attenuation Measured with 5Ω, 2dB attenuator 5Ω Scope input impedance Voltage (V) 5-5 - -5-2 5-25 -3 T A = 25 o C Corrected for 2dB attenuation Measured with 5Ω, 2dB attenuator 5Ω Scope input impedance - 2 3 4 5 6 Time (ns) -35-2 3 4 5 6 Time (ns) Applications Information Device Connection Options These low capacitance TVS diodes are designed to provide coon mode protection for one high-speed line or differential protection for one line pair. The device is bidirectional and may be used on lines where the signal polarity is positive and negative. Equivalent Circuit Diagram Circuit Board Layout Recoendations for Suppression of ESD. Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recoended: Place the TVS near the input terminals or connectors to restrict transient coupling. Minimize the path length between the TVS and the protected line. Minimize all conductive loops including power and ground loops. The ESD transient return path to ground should be kept as short as possible. ever run critical signals near board edges. Use ground planes whenever possible. 22 Semtech Corporation 4
RClamp52P PROTECTIO PRODUCTS Applications Information - Spice Model PRELIMIARY I/O Line RClamp52P Spice Model RClamp52P Spice Parameters Parameter IS BV VJ RS IBV CJO TT U nit D (LCRD) D 2 (LCRD) D3 (TVS) Amp.E-2.E-2 2.E-2 Volt 9.36 Volt. 7. 7. 6 Ohm.458.89. 8 Farad.4E-2.4E-2 56E-2 Amp E-3 E-3 E-3 sec 2.54E- 9 2.54E- 9 2.54E- 9 M --...23 --... EG ev... 22 Semtech Corporation 5
PROTECTIO PRODUCTS Outline Drawing - - SO-8 SLP6P2 RClamp52P PRELIMIARY A D B aaa C A TOP VIEW E A C SEATIG PLAE DIMESIOS ICHES MILLIMETERS DIM MI OM MAX MI OM MAX A.6.2.22.4.5.55 A...2..3.5 b.8.2.22.45.5.55 D.35.39.43.9.. E.2.24.28.5.6.7 e.26 BSC.65 BSC L.8..2.2.25.3 R.2.4.6.5..5 2 2 aaa.3.8 bbb.4. PI ID bx bbb C A B R e 2x L BOTTOM VIEW OTES:. COTROLLIG DIMESIOS ARE I MILLIMETERS (AGLES I DEGREES). Land Pattern - SLP6P2 (C) G Z X Y DIMESIOS DIM ICHES MILLIMETERS C (.33) (.85) G X.2.24.3.6 Y.22.55 Z.55.4 OTES:. COTROLLIG DIMESIOS ARE I MILLIMETERS (AGLES I DEGREES). 2. THIS LAD PATTER IS FOR REFERECE PURPOSES OLY. COSULT YOUR MAUFACTURIG GROUP TO ESURE YOUR COMPAY'S MAUFACTURIG GUIDELIES ARE MET. 22 Semtech Corporation 6
PROTECTIO PRODUCTS Marking Codes Ordering Information RClamp52P PRELIMIARY PI ID Part umber RClamp52P.TCT RClamp52P.TT Tape Pitch Qty per Reel RailClamp and RClamp are marks of Semtech Corporation. Reel Size 4 3, 7 Inch 2, 7 Inch Carrier Tape Specification 3, piece, 4 Pitch Reel Pin Location (Towards Sprocket Holes) Device Orientation in Tape A B K.69 +/-..9 +/-..66 +/-. Tape Width B, (Max) D D E F P P P2 T W 8 4.2 (.65).5 +. -. (.59 +.5 -.).4 ±.25 (.3).75±. (.69±.4) 3.5±.5 (.38±.2) 4.±. (.57±.- 4) 4.±. (.57±.- 4) 2.±.5 (.79±.2).254±.2 (.6) 8. +.3 -. (.32±.2) 22 Semtech Corporation 7
PROTECTIO PRODUCTS, piece, 2 Pitch Reel RClamp52P PRELIMIARY Bo Ko Ao A B K.69 +/-..9 +/-..66 +/-. ote: All dimensions in unless otherwise specified Pin Location (Towards Sprocket Holes) Device Orientation in Tape Contact Information for Semtech International AG Taiwan Branch Tel: 886-2-2748-338 Fax: 886-2-2748-339 Korea Branch Tel: 82-2-527-4377 Fax: 82-2-527-4376 Shanghai Office Tel: 86-2-639-83 Fax: 86-2-639-83 Semtech International AG is a wholly-owned subsidiary of Semtech Corporation, which has its headquarters in the U.S.A. Semtech Switzerland GmbH Tel: 8-3-648-95 Japan Branch Fax: 8-3-648-95 Semtech Limited (U.K.) Tel: 44-794-527-6 Fax: 44-794-527-6 Semtech France SARL Tel: 33-()69-28-22- Fax: 33-()69-28-2-98 Semtech Germany GmbH Tel: 49-()86-4-23 Fax: 49-()86-4-24 22 Semtech Corporation 8