SRV05-4ATCT SAMTEC | Alldatasheet
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1 www.semtech.com PROTECTION PRODUCTS - RailClamp ®®®®® SRV05-4A Low Capacitance TVS Diode Array Description Features Circuit Diagram Schematic and PIN Configuration Revision 04/19/2010 RailClamp® low capacitance TVS array is designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive compo- nents which are connected to data and transmission lines from overvoltage caused by electrostatic dis- charge (ESD), electrical fast transients (EFT), and lightning. The unique design incorporates eight surge rated, low capacitance steering diodes and a TVS diode in a single package. During transient conditions, the steering diodes direct the transient to either the positive side of the power supply line or to ground. The internal TVS diode prevents over-voltage on the power line, protecting any downstream components. The SRV05-4A is in a 6-lead SOT-23 package. The leads are finished with lead-free matte tin. Each device will protect up to four high-speed lines. They may be used to meet the ESD immunity requirements of IEC 61000-4-2. The combination of small size, low capacitance, and high surge capability makes them ideal for use in applications such as 10/100 Ethernet, USB 2.0, and video interfaces.
Applications
Mechanical Characteristics USB 2.0 Power and Data Line Protection Video Graphics Cards Monitors and Flat Panel Displays Digital Visual Interface (DVI) 10/100 Ethernet Notebook Computers SIM Ports IEEE 1394 Firewire Ports Protection for high-speed data lines to IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20 μs) Array of surge rated diodes with internal TVS Diode Small package saves board space Protects four I/O lines Low capacitance: 3pF typical Low clamping voltage Low operating voltage: 5.0V Solid-state silicon-avalanche technology JEDEC SOT-23 6L package Pb-Free, Halogen Free, RoHS/WEEE Compliant Molding compound flammability rating: UL 94V-0 Marking: V05 + Date Code Packaging: Tape and Reel SOT-23 6L (Top View) 13 4 6
2© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A Absolute Maximum Rating retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR 2ot5niP5 V egatloVnwodkaerBesreveRV RB It Am1= 2ot5niP tnerruCegakaeLesreveRI R V MWR C°52=T,V5= 2ot5niP 5A μ egatloVdrawroFV F If Am51=2 .1V egatloVgnipmalCV C I PP sμ02/8=pt,A1= dnuorGotnipO/IynA 5.21V egatloVgnipmalCV C I PP sμ02/8=pt,A5= dnuorGotnipO/IynA 5.71V ecnaticapaCnoitcnuJC j VR zHM1=f,V0= dnuorGotnipO/IynA
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3© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 100 110 0 25 50 75 100 125 150 Ambient Temperature - T A (oC) % of Rated Power or IPP Clamping Voltage vs. Peak Pulse CurrentPulse Waveform Forward Voltage vs. Forward Current Normalized Capacitance vs. Reverse Voltage 0.00 5.00 10.00 15.00 20.00 25.00 30.00 Peak Pulse Current - I PP (A) Clamping Voltage -VC (V) Waveform Parameters: tr = 8µs td = 20µs 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 Forward Current - IF (A) Forward Voltage -VF (V) Waveform Parameters: tr = 8µs td = 20µs 0.01 0.1 0.1 1 10 100 1000 Pulse Duration - tp (µs) Peak Pulse Power - PPk (kW) 100 110 0 5 10 15 20 25 30 Time (µs) Percent of I PP e-t td = IPP/2 Waveform Parameters: tr = 8µs td = 20µs 0.2 0.4 0.6 0.8 1.2 1.4 012345 Reverse Voltage - VR (V) CJ(VR) / CJ(VR=0) f = 1 MHz
4© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A 3 dB/CH1 S21 LOG REF 0 dB START .030 000 MHz STOP 3 000 . 000 000 MHz CH1 S21 LOG 20 dB/ REF 0 dB START .030 000 MHz STOP 3 000 . 000 000 MHz Insertion Loss S21 Analog Cross Talk Applications Information
5© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A Device Connection Options for Protection of Four High-Speed Data Lines The SRV05-4A is designed to protect four data lines from transient over-voltages by clamping them to a fixed reference. When the voltage on the protected line exceeds the reference voltage (plus diode V F) the steering diodes are forward biased, conducting the transient current away from the sensitive circuitry. Data lines are connected at pins 1, 3, 4 and 6. The negative reference (REF1) is connected at pin 2. This pin should be connected directly to a ground plane on the board for best results. The path length is kept as short as possible to minimize parasitic inductance. The positive reference (REF2) is connected at pin 5. The options for connecting the positive reference are as follows: 1. To protect data lines and the power line, connect pin 5 directly to the positive supply rail (V CC). In this configuration the data lines are referenced to the supply voltage. The internal TVS diode prevents over-voltage on the supply rail. 2. The SRV05-4A can be isolated from the power supply by adding a series resistor between pin 5 and V CC. A value of 100k Ω is recommended. The internal TVS and steering diodes remain biased, providing the advantage of lower capacitance. 3. In applications where no positive supply reference is available, or complete supply isolation is desired, the internal TVS may be used as the reference. In this case, pin 5 is not connected. The steering diodes will begin to conduct when the voltage on the protected line exceeds the working voltage of the TVS (plus one diode drop). ESD Protection With RailClamps RailClamps are optimized for ESD protection using the rail-to-rail topology. Along with good board layout, these devices virtually eliminate the disadvantages of using discrete components to implement this topology. Consider the situation shown in Figure 1 where dis- crete diodes or diode arrays are configured for rail-to- rail protection on a high speed line. During positive duration ESD events, the top diode will be forward biased when the voltage on the protected line exceeds Data Line and Power Supply Protection Using Vcc as reference Data Line Protection with Bias and Power Supply Isolation Resistor Data Line Protection Using Internal TVS Diode as Reference Applications Information
10© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A Outline Drawing - SO-8 Land Pattern -SOT23 6L Outline Drawing -SOT23 6L .110 BSC .037 BSC DETAIL aaa C SEATING ccc C 2X N/2 TIPS 2X E/2 SEE DETAIL AA2 bxN A .008 N E .060 .114 .063 .122 .010 - A 0.20 1.60 3.10
2.80 BSC
0.95 BSC
.069 1.50 2.90 .020 0.25 1.75 0.50- EI L (L1) c 0.25 PLANE GAGE H 2.80.110 bbb C A-B D .008 .004 .012 .003 (.024) .018 .035 .000 .035 .045 0.10 0.20 10° 0° - 10° 1.15 (0.60) 0.45.024 .009 0.30 0.08 .057 .051 .006 0.00 .90 0.90 0.22 0.60 0.15 1.45 1.30 1.90 BSC.075 BSC A e1 D e B C PLANE D DATUMS AND TO BE DETERMINED AT DATUM PLANE CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS3. OR GATE BURRS. NOTES: 2. -A- -B- -H- SIDE VIEW NOM INCHES DIMENSIONS aaa bbb ccc N DIM c e L E D b A MIN MILLIMETERS MAX MIN NOM MAX DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS P (C) Z Y G .043 .141 .055 (.098) .037 .024 1.40 (2.50) 0.95 0.60 1.10 3.60 X DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES:
11© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS SRV05-4A Contact Information Semtech Corporation Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804 rebmuNtraPh siniFdaeL repytQ leeR eziSleeR TCTA4-50VRSn iTettaM0 00,3h cnI7 Marking Codes Ordering Information Tape and Reel Specification epaT htdiW )xaM(,BD 1 DE F K )XAM( P0 P2 P) XAM(TW mm8 mm2.4 )561.( mm1.0+5.1 mm0.0- mm0.1 50.0± 01.±057.1 mm 50.0±5.3 mm mm4.2 1.0±0.4 mm 1.0±0.4 mm 50.0±0.2 mm mm4.0 mm0.8 mm3.0+ mm1.0- 0A0 B0 K YW = 2 - Alphanumeric characters for Date Code V05 YW User Direction of feed Pin 1 Location