SR70.TCT Semtech, SR70.TCT Datasheet

SR70.TCT

Manufacturer Part Number

SR70.TCT

Description

IC TVS ARRAY 2-LINE 300W SOT-143

Manufacturer

Semtech

Series

RailClamp®r

Datasheet

1.SR70.TCT.pdf (6 pages)

Specifications of SR70.TCT

Voltage - Reverse Standoff (typ)

70V

Voltage - Breakdown

85V

Power (watts)

300W

Polarization

2 Channel Array - Unidirectional

Mounting Type

Surface Mount

Package / Case

SOT-143, SOT-143B, TO-253AA

Suppressor Type

Diode Arrays

Esd Protection Voltage

15KV@Air Gap/8KV@Contact Disc

Configuration

Dual

Mounting Style

Surface Mount

Clamping Voltage (max)

7VV

Working Voltage (max)

70VV

Leakage Current (max)

5uAA

Operating Temperature Min Deg. C

-55C

Operating Temperature Max Deg. C

125C

Product Length (mm)

3.04(Max)mm

Product Depth (mm)

1.4(Max)mm

Product Height (mm)

1.1mm

Pin Count

3 +Tab

Rad Hardened

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

SR70TR

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Current page: 1 of 6
Download datasheet (158Kb)

RailClamps are surge rated diode arrays designed to

protect high speed data interfaces. The SR70 has

been specifically designed to protect sensitive compo-

nents which are connected to data and transmission

lines from over-voltages caused by ESD (electrostatic

discharge), EFT (electrical fast transients), and light-

ning. The SR70 has been optimized for use on ADSL

and other high-speed interfaces.

The unique design of the SR70 integrates four surge

rated, low capacitance steering diodes in a low profile

SOT-143 package. It has a typical capacitance of only

5pF and may be used to protect two high-speed lines

without sacrificing signal integrity. The SR70 is de-

signed to replace “standard” rectifiers that are not

rated for the high energy surges that are normally

expected in telecommunications applications.

During transient conditions, the steering diodes direct

the transient to either the positive side of the power

supply line or to ground. The maximum clamping

voltage seen by the protected circuit will be one diode

drop (V

SR70 may be used as a stand alone device or in

conjunction with TVS diodes for enhanced protection.

Revision 04/18/03

PROTECTION PRODUCTS

Description

Circuit Diagram

) above the supply (reference) voltage. The

Pin 2

Pin 4

Pin 1

Pin 3

Low Capacitance TVS Diode Array

Features

Mechanical Characteristics

Applications

Schematic & 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) 1kV, 24A (8/20µs)

Array of surge rated, low capacitance diodes

Protects two I/O lines

Low capacitance (5pF typical) for high-speed

interfaces

Low clamping voltage

Solid-state silicon-avalanche technology

JEDEC SOT-143 package

UL 497B listed

Molding compound flammability rating: UL 94V-0

Marking : R70

Packaging : Tape and Reel per EIA 481

ADSL Lines

Video Line Protection

T1/E1 secondary IC Side Protection

Portable Electronics

Microcontroller Input Protection

WAN/LAN Equipment

ISDN S/T Interface

C Bus Protection

SOT-143 (Top View)

RailClamp

www.semtech.com

SR70

Related parts for SR70.TCT

SR70.TCT Summary of contents

Page 1

... Packaging : Tape and Reel per EIA 481 Applications ADSL Lines Bus Protection Video Line Protection T1/E1 secondary IC Side Protection Portable Electronics Microcontroller Input Protection WAN/LAN Equipment ISDN S/T Interface Schematic & PIN Configuration Pin 3 1 SR70 RailClamp SOT-143 (Top View) www.semtech.com ...

Page 2

... PROTECTION PRODUCTS Absolute Maximum Rating µ Electrical Characteristics (T= 2003 Semtech Corp ° µ µ µ www.semtech.com SR70 ° C ° C ° µ ...

Page 3

... Pulse Duration - tp (µs) Pulse Waveform 110 100 Time (µs) Forward Voltage vs. Forward Current Forward Current - I F 2003 Semtech Corp. 110 100 100 1000 0 Waveform Parameters µ µ -10 -12 -14 - Waveform Parameters µ µ (A) 3 Power Derating Curve 100 125 o Ambient Temperature - T ...

Page 4

... TVS diode may be used as the refer- ence. 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). 2003 Semtech Corp. SR70 Pin Configuration 1 ) the F ...

Page 5

... PROTECTION PRODUCTS Outline Drawing Notes: (1) Controlling dimension: Inch (unless otherwise specified). (2) Dimension A and B do not include mold protrusions. Mold protrusions are .006” max. Land Pattern 2003 Semtech Corp. 5 SR70 www.semtech.com ...

Page 6

... PROTECTION PRODUCTS Marking Codes R70 SR70 Marking (Top View) Ordering Information Contact Information Phone: (805)498-2111 FAX (805)498-3804 2003 Semtech Corp Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 6 SR70 www.semtech.com ...

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