LH1533 データシートの表示（PDF） - Siemens AG

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LH1533

Dual 1 Form A High-Voltage Solid State Relays

Siemens AG 

LH1533

Dual 1 Form A

High-Voltage Solid State Relays

FEATURES

• Load voltage, 350 V

• Load current 70 mA

• TRON, typical at 100 mA

• 3750 Vrms I/O isolation

• Current-limit protection

• High-surge capability

• Linear, ac/dc or dc operation

• Clean, bounce-free switching

• Low power consumption

• High-reliability monolithic receptor

• Surface-mountable

APPLICATIONS

• General telecom switching

– On/off-hook

– Dial pulse

– Ground start

– Ground fault protection

• Instrumentation

• Industrial controls

• Peripherals

DESCRIPTION

The LH1533 (Dual 1 Form A) relays are SPST normally open

switches that can replace electromechanical relays in many appli-

cations. The relays are constructed using a GaAlAs LED for actua-

tion control and an integrated monolithic die for the switch output.

The die, fabricated in a high-voltage dielectrically isolated

BICMOS technology, is comprised of a photodiode array, switch

control circuitry, and MOSFET switches. In addition, the relay

employs current-limiting circuitry enabling it to pass FCC 68.302

and other regulatory voltage surge requirements when overvoltage

protection is provided.

The LH1533 (Dual 1 Form A) relay is packaged in an 8-pin DIP

(LH1533AB) or in a surface-mount, option 9 (LH1533AAC). The

surface-mount devices are available in sticks or on tape and reel.

Figure 1. Functional Diagram

S1

S1' S2

S2'

8

76

5

S1

S1'

S2

S2'

1

23

4

Siemens Microelectronics, Inc. • Optoelectronics Division

www.smi.siemens.com/opto/

11 of 25

LH1533AB, LH1533AAC

October 1998

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