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HSR312

Photovoltaic Solid-State Relay Optocouplers

Fairchild Semiconductor 

October 2006

HSR312, HSR312L, HSR412, HSR412L

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Photovoltaic Solid-State Relay Optocouplers

Features

■ 4,000 VRMS Isolation

■ Wide operating voltage range

■ 250 V (HSR312, HSR312L)

■ 400 V (HSR412, HSR412L)

■ Solid-State Reliability

■ Bounce-Free Operation

■ 4000 V ESD Rating (HBM)

■ UL and CSA approved

Applications

■ On/Off Hook Switch

■ Replacement for Mechanical Relays

■ Dial Out Relay

■ Ring Injection Relay

■ General Switching

■ Ground Start

Description

The HSR312 and HSR412 devices consist of a AlGaAs

infrared emitting diode optically coupled to a power

MOSFET detector which is driven by a photovoltaic gen-

erator. The devices are housed in a 6-pin dual-in-line

package. The HSR312L and HSR412L employ an active

current limit circuitry enabling the device to withstand

current surge transients.

Package

Schematic

6

6

1

1

ANODE 1

CATHODE 2

N/C 3

6 DRAIN

5

4 DRAIN

©2005 Fairchild Semiconductor Corporation

1

HSR312, HSR312L, HSR412, HSR412L Rev. 1.0.2

www.fairchildsemi.com

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