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FOD617

4-Pin Phototransistor Optocouplers

Fairchild Semiconductor 

November 2005

FOD814 Series, FOD617 Series, FOD817 Series

4-Pin Phototransistor Optocouplers

Features

■ AC input response (FOD814 only)

■ Applicable to Pb-free IR reflow soldering

■ Compact 4-pin package

■ Current transfer ratio in selected groups:

FOD617A: 40–80%

FOD817: 50–600%

FOD617B: 63–125%

FOD817A:80–160%

FOD617C: 100–200% FOD817B: 130–260%

FOD617D: 160–320% FOD817C:200–400%

FOD814: 20–300%

FOD817D:300–600%

FOD814A: 50–150%

■ C-UL, UL and VDE approved

■ High input-output isolation voltage of 5000Vrms

■ Higher operating temperatures (versus FODXXX

counterparts)

■ Minimum BVCEO of 70V guaranteed

Applications

FOD814 Series

■ AC line monitor

■ Unknown polarity DC sensor

■ Telephone line interface

FOD617 and FOD817 Series

■ Power supply regulators

■ Digital logic inputs

■ Microprocessor inputs

Description

The FOD814 consists of two gallium arsenide infrared

emitting diodes, connected in inverse parallel, driving a

silicon phototransistor output in a 4-pin dual in-line

package. The FOD617/817 Series consists of a gallium

arsenide infrared emitting diode driving a silicon

phototransistor in a 4-pin dual in-line package.

Functional Block Diagram

ANODE, CATHODE 1

4 COLLECTOR

ANODE 1

4 COLLECTOR

CATHODE, ANODE 2

3 EMITTER

CATHODE 2

3 EMITTER

4

FOD814

FOD617/817

1

©2005 Fairchild Semiconductor Corporation

1

FOD814 Series, FOD617 Series, FOD817 Series Rev. 1.0.2

www.fairchildsemi.com

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