Document Number: 83835

www.vishay.com

Rev. 1.6, 17-Mar-11

1

This datasheet is subject to change without notice.

Dual 1 Form A Solid State Relay (Low Capacitance)

LH1544AAC, LH1544AACTR, LH1544AB

Vishay Semiconductors

DESCRIPTION

These dual SSRs (LH1544, dual 1 form A) are SPST normally

open switches which can replace electromechanical relays

in many applications. The relays provide a low-capacitance,

high-voltage switch contact with high off-resistance and low

switch-offset voltage. These characteristics, combined with

high-speed actuation, result in an SSR which is ideal for

small signal and DC instrumentation applications.

The relays are constructed by using a GaAlAs LED for

actuation control and an integrated monolithic die for the

switch output. The die is comprised of a photodiode array,

switch-control circuity, and low-capacitance MOSFET

switches.

FEATURES

• Dual channel, LH1541 type

• Low capacitance switch (5 pF)

• Extremely high off-resistance

• Load voltage 200 V

• Clean bounce free switching

• Low power consumption

• High reliability monolithic detector

• Compliant

to

RoHS

Directive

2002/95/EC

and

in

accordance to WEEE 2002/96/EC

APPLICATIONS

• Instrumentation

- Thermocouple switching

- Analog multiplexing

• Reed relay replacement

• Programmable logic controllers

• Data acquisition

• Test equipment

i179034_9

13

24

86

75

S2'

S2

S1

S1'

S2'

S2

S1

S1'

V

DE

i179034_2

DIP

SMD

AGENCY APPROVALS

UL1577:

file no. E52744 system code H, double

protection

CSA:

certification no. 093751

BSI/BABT: certification no. 7980

DIN EN:

60747-5-2 (VDE 0884)/60747-5-5 (pending),

available with option 1

FIMKO:

approval

ORDERING INFORMATION

L

H

1544

A

#

#

T

R

PART NUMBER

ELECTR.

VARIATION

PACKAGE

CONFIG.

TAPE AND

REEL

PACKAGE

UL, CSA, BSI, VDE, FIMKO

SMD-8, tubes

LH1544AAC

SMD-8, tape and reel

LH1544AACTR

DIP-8, tubes

LH1544AB

> 0.1 mm

7.62 mm

DIP

SMD