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LH1529AAC

Telecom Switch – 1 Form A Solid State Relay

Vishay Siliconix 

LH1529AB/AAC/AACTR

LH1529BB/BAC/BACTR

Telecom Switch – 1 Form A

Solid State Relay

FEATURES

• Solid State Relay and Optocoupler in

One Package

• Surface Mount Package

• l/O Isolation, 5300 VRMS

• LH1529A, CTR Min.=33%

• LH1529B, CTR Min.=100%

• Optocoupler

– Bidirectional Current Detection

• Solid-state Relay

– See LH1540 Data Sheet

– Typical RON 20 Ω

– Load Voltage 350 V

– Load Current 120 mA

– Current Limit Protection

AGENCY APPROVALS

• UL – File No. E52744

• BSI/BABT Cert. No. 7980

• FIMKO Approval

APPLICATIONS

• General Telecom Switching

– On/off Hook Control

– Dial Pulse

– Ring Current Detection

– Loop Current Sensing

• See Appnote 56

DESCRIPTION

The LH1529A and LH1529B Telecom switches consist

of an optically coupled solid state relay (SSR) and a

bidirectional input optocoupler. The SSR is ideal for per-

forming switchhook and dial-pulse switching while the

optocoupler performs ring detection and loop current

sensing functions. Both the SSR and optocoupler pro-

vide 5300 VRMS of input to output isolation.

The SSR is integrated on a monolithic receptor die using

high voltage technology. The optocoupler provides bidi-

rectional current sensing via two antiparallel GaAs infra-

red emitting diodes. The opto channel provides a

minimum CTR of 33% at 6.0 mA.

Package Dimensions in Inches (mm)

DIP

pin one ID

4 321

.268 (6.81)

.255 (6.48)

5 678

S

S'

S

S'

8

7

6

5

.045 (1.14)

.030 (0.76)

4° typ.

.050 (1.27)

.022 (.56)

.018 (.46)

SMD

.390 (9.91)

.379 (9.63)

.031 (0.79)

.150 (3.81)

.130 (3.30)

.035 (.89)

.020 (.51)

.100 (2.54) typ.

Pin one I.D.

1

2

.300 (7.62)

typ.

10°

3°–9°

.012 (.30)

.008 (.20)

3

4

.250 (6.35)

.230 (5.84)

.130 (3.30)

.110 (2.79)

.268 (6.81)

.255 (6.48)

.390 (9.91)

.379 (9.63)

.045 (1.14)

.030 (0.78)

.031 (.79)

typ.

.150 (3.81)

.130 (3.30)

Radius

.395 (10.03)

.375 (9.52)

.312 (7.80)

.298 (7.52)

4°

typ.

.050

(1.27)

typ.

.008 (.25)

.004 (.10)

.100 (2.54)

typ.

.040 (1.02)

.020 (.51)

10°

.315

(8.00)

typ.

3° to 7°

.010

(2.54)

typ.

Part Identification

Part Number

LH1529AB

LH1529BB

LH1529AAC

LH1529BAC

LH1529AACTR

LH1529BACTR

Description

8 pin DIP, Tubes

8-pin SMD, Tubes

8-pin SMD, Tape and Reel

Document Number: 83827

Revision 17-August-01

www.vishay.com

3–126

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