srda3.34 Semtech Corporation, srda3.34 Datasheet

srda3.34

Manufacturer Part Number

srda3.34

Description

Srda3.3-4 Railclamp Low-capacitance Tvs Diode Array

Manufacturer

Semtech Corporation

Datasheet

1.SRDA3.34.pdf (8 pages)

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RailClamps are surge rated diode arrays designed to

protect high speed data interfaces. The SRDA series

has been specifically designed to protect sensitive

components which are connected to data and trans-

mission lines from overvoltage caused by electrostatic

discharge (ESD), electrical fast transients (EFT), and

lightning.

The unique design incorporates surge rated, low

capacitance steering diodes and a TVS diode in a

single package. During transient conditions, the

steering diodes direct the transient current to ground

via the internal low voltage TVS. The TVS diode clamps

the transient voltage to a safe level. The low capaci-

tance array configuration allows the user to protect up

to four high-speed data lines.

The SRDA3.3-4 is constructed using Semtech’s

proprietary EPD process technology. The EPD process

provides low stand-off voltages with significant reduc-

tions in leakage current and capacitance over silicon-

avalanche diode processes. They feature a true

operating voltage of 3.3 volts for superior protection.

These devices are in a 8-pin SOIC package. It mea-

sures 3.9 x 4.9mm. They are available with a SnPb or

RoHS/WEEE compliant matte tin lead finish. The high

surge capability (Ipp=25A, tp=8/20μs) means it can be

used in high threat environments in applications such

as CO/CPE equipment, telecommunication lines, and

video lines.

Revision 01/15/08

PROTECTION PRODUCTS

PROTECTION PRODUCTS - RailClamp

Description

Circuit Diagram

2, 3

I/O 1

I/O 2

5, 8

I/O 3

I/O 4

® ® ® ® ®

Features

Mechanical Characteristics

Applications

Schematic and PIN Configuration

Transient 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) 24A (8/20μs)

Array of surge rated diodes with internal TVS diode

Protects four I/O lines

Low capacitance (<15pF) for high-speed interfaces

Low operating voltage: 3.3V

Low clamping voltage

Solid-state technology

JEDEC SOIC-8 package

Lead Finish: SnPb or Matte Sn

Molding compound flammability rating: UL 94V-0

Marking : Part number, date code, logo

Packaging : Tape and Reel per EIA 481

T1/E1 secondary IC Side Protection

T3/E3 secondary IC Side Protection

Analog Video Protection

Microcontroller Input Protection

Base stations

I/O 1

I/O 2

C Bus Protection

Low Capacitance TVS Array

S0-8 (Top View)

SRDA3.3-4

RailClamp

www.semtech.com

GND

I/O 4

I/O 3

GND

® ® ® ® ®

Related parts for srda3.34

srda3.34 Summary of contents

Page 1

PROTECTION PRODUCTS PROTECTION PRODUCTS - RailClamp Description RailClamps are surge rated diode arrays designed to protect high speed data interfaces. The SRDA series has been specifically designed to protect sensitive components which are connected to data and trans- mission lines ...

Page 2

PROTECTION PRODUCTS PROTECTION PRODUCTS Absolute Maximum Rating μ ...

Page 3

PROTECTION PRODUCTS PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time 10 1 0.1 0.01 0 Pulse Duration - t Pulse Waveform 110 100 ...

Page 4

PROTECTION PRODUCTS PROTECTION PRODUCTS Applications Information Device Connection Options for Protection of Four High-Speed Data Lines These devices are designed to protect low voltage data lines operating at 3.3 volts. When the voltage on the protected line exceeds the punch-through ...

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srda3.34 Semtech Corporation, srda3.34 Datasheet

srda3.34

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srda3.34 Summary of contents

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