©2006 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FODMXXX Rev. 1.1.4

February 2012

FODM121 Series, FODM124, FODM2701, FODM2705

4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

Features

(2.4mm maximum standoff height)

DC Input:

FODM121: 50–600%

FODM2701: 50–300%

FODM121A: 100–300%

FODM124: 100% MIN

FODM121B: 50–150%

FODM121C: 100–200%

AC Input:

FODM2705: 50–300%

*option ‘V’ required

Applications

Description

The FODM124, FODM121 series, and FODM2701

consists of a gallium arsenide infrared emitting diode

driving a phototransistor in a compact 4-pin mini-flat

package. The lead pitch is 2.54mm. The FODM2705

consists of two gallium arsenide infrared emitting diodes

connected in inverse parallel for AC operation.

Package Dimensions

4.40

±0.20

2.54

3.85

±0.20

2.00

±0.20

0.10

±0.10

0.40

±0.10

5.30

±0.30

7.00

+0.2

–0.7

0.20

±0.05

1

2

4

3

EMITTER

Equivalent Circuit

FODM121, FODM124, FODM2701

Equivalent Circuit

FODM2705

COLLECTOR

ANODE

CATHODE

1

2

4

3

EMITTER

COLLECTOR

ANODE

CATHODE

Note:

All dimensions are in millimeters.