LH1550AT1/ AAB1/ AAB1TR

Document Number 83841

Rev. 1.5, 26-Oct-04

Vishay Semiconductors

www.vishay.com

1

4

65

S'

S

NC

12

3

SS'

i179003

DIP

SMD

Pb

Pb-free

e3

1 Form A High-Voltage Solid State Relay

Features

• Current Limit Protection

• Load Voltage 350 V

• Load Current 120 mA

• High Surge Capability

• Clean Bounce Free Switching

• Low Power Consumption

• High Reliability Monolithic Detector

• SMD Lead Available on Tape and Reel

• Lead-free component

• Component in accordance to RoHS 2002/95/EC

and WEEE 2002/96/EC

Agency Approvals

• UL1577, File No. E52744 System Code H or J,

Double Protection

• BABT/BSI Certified

Applications

General Telecom Switching

- On/off Hook Control

- Ring Delay

- Dial Pulse

- Ground Start

- Ground Fault Protection

Instrumentation

Industrial Controls

Description

The LH1550 is robust, ideal for telecom and ground

fault applications. It is a SPST normally open switch

(1 Form A) that replaces electromechanical relays in

many applications. It is similar to the LH1540, but has

a characteristically higher On resistance. It is con-

structed using a GaAIAs LED for actuation control

and an integrated monolithic die for the switch output.

The die, fabricated in a high-voltage dielectrically iso-

lated technology, is comprised of a photodiode array,

switch control circuitry and MOSFET switches. In

addition, it employs current-limiting circuitry which

meets FCC 68.302 and other regulatory voltage

surge requirements when overvoltage protection is

provided.

Order Information

Part

Remarks

LH1550AT1

Thru Hole, DIP-6

LH1550AAB1

SMD-6

LH1550AAB1TR

Tape and Reel, SMD-6