Fairchild FODM121 service manual

FODM121 Series, FODM124, FODM2701, FODM2705 — 4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

February 2012

FODM121 Series, FODM124, FODM2701, FODM2705
4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

Features

■

More than 5mm creepage/clearance

■

Compact 4-pin surface mount package
(2.4mm maximum standoff height)

Current Transfer Ratio in selected groups

■

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%

■

Available in tape and reel quantities of 2500

Applicable to Infrared Ray reflow (260°C max, 10 sec.)

■

■

C-UL, UL and VDE* certifications

*option ‘V’ required

Package Dimensions

Applications

■

Digital logic inputs
Microprocessor inputs

■

■

Power supply monitor
Twisted pair line receiver

■

■

Telephone line receiver

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.

4.40±0.20

1

2.54

3.85

±0.20

2.00±0.20

0.10±0.10

0.40±0.10

Note:

All dimensions are in millimeters.

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FODMXXX Rev. 1.1.4

5.30±0.30

+0.2

7.00

–0.7

0.20±0.05

CATHODE

FODM121, FODM124, FODM2701

CATHODE

2

Equivalent Circuit

1

2

Equivalent Circuit

FODM2705

4

COLLECTORANODE

EMITTER

3

4

COLLECTORANODE

EMITTER

3

Absolute Maximum Ratings

(T

= 25°C unless otherwise specified)

A

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.

Symbol Parameter Value Units

TOTAL PACKAGE

T

STG

T

OPR

EMITTER

I

F (avg)

I

F (pk)

V

R

P

D

DETECTOR

P

D

V

CEO

V

ECO

Storage Temperature -40 to +125 °C

Operating Temperature -40 to +110 °C

Continuous Forward Current 50 mA

Peak Forward Current (1µs pulse, 300 pps.) 1 A

Reverse Input Voltage 6 V

Power Dissipation 70 mW

Derate linearly (above 25°C) 0.65 mW/°C

Continuous Collector Current 80 mA

Power Dissipation 150 mW

Derate linearly (above 25°C) 2.0 mW/°C

Collector-Emitter Voltage FODM2701, FODM2705 40 V

FODM121 Series, FODM124 80

Emitter-Collector Voltage 7 V

FODM121 Series, FODM124, FODM2701, FODM2705 — 4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

(T

Electrical Characteristics

= 25°C)

A

Individual Component Characteristics

Symbol Parameter Test Conditions Device Min. Typ.* Max. Unit

EMITTER

V

I

DETECTOR

BV

CEO

BV

ECO

I

CEO

C

CE

Forward Voltage I

F

Reverse Current V

R

Breakdown Voltage
Collector to Emitter

Emitter to Collector I

Collector Dark
Current

Capacitance V

= 10mA FODM121 Series,

F

1.0 1.3 V

FODM124

I

= 5mA FODM2701 1.4

F

I

= ±5mA FODM2705

F

= 5V FODM2701 5 µA

R

FODM121 Series

FODM124

I

= 1mA, I

C

= 0 FODM121 Series,

F

80 V

FODM124

FODM2701,

40

FODM2705

= 100µA, I

E

V

= 40V, I

CE

= 0V, f = 1MHz All 10 pF

CE

= 0 All 7 V

F

= 0 All 100 nA

F

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FODMXXX Rev. 1.1.4 2

FODM121 Series, FODM124, FODM2701, FODM2705 — 4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

Electrical Characteristics

(Continued)

(T

A

= 25°C)

Transfer Characteristics

Symbol Characteristic Test Conditions Device Min. Typ.* Max. Unit

CTR DC Current Transfer Ratio I

CTR Symmetry I

V

CE (SAT)

Saturation Voltage I

Rise Time (Non-Saturated) I

t

r

t

Fall Time (Non-Saturated) I

f

= ±5mA, V

F

= 5mA, V

I

F

I

= 5mA, V

F

= 1mA, V

I

F

= 0.5mA, V

I

F

= ±5mA, V

F

= ±10mA, I

F

= 10mA, I

I

F

I

= 8mA, I

F

I

= 1mA, I

F

= 2mA, V

C

R

= 100 Ω

L

= 2mA, V

C

R

= 100 Ω

L

= 5V FODM2705 50 300 %

CE

= 5V FODM2701 50 300

CE

= 5V FODM121 50 600

CE

FODM121A 100 300

FODM121B 50 150

FODM121C 100 200

= 0.5V FODM124 100 1200

CE

= 1.5V 50

CE

= 5V FODM2705 0.3 3.0

CE

= 2mA FODM2705 0.3 V

C

= 2mA FODM2701 0.3

C

= 2.4mA FODM121

C

0.4

Series

= 0.5mA FODM124 0.4

C

CE

CE

= 5V,

= 5V,

All 3 µs

All 3 µs

Isolation Characteristics

Characteristic Test Conditions Symbol Device Min. Typ.* Max. Unit

Steady State Isolation Voltage

*All typicals at T

= 25°C

A

Note:

1. Steady state isolation voltage, V
common, and pins 3 and 4 are common.

(1)

1 Minute V

, is an internal device dielectric breakdown rating. For this test, pins 1 and 2 are

ISO

ISO

All 3750 VRMS

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FODMXXX Rev. 1.1.4 3

Typical Performance Curves

Fig. 1 Forward Current vs. Forward Voltage

100

T

= 110oC

A

o

C

70

o

25

C

10

- Forward Current (mA)

F

I

1

0.6 0.8 1.0 1.2 1.4 1.6 1.8

VF - Forward Voltage (V)

0

-40oC

FODM121 Series, FODM124, FODM2701, FODM2705 — 4-Pin Full Pitch Mini-Flat Package Transistor Output Optocouplers

Fig. 2 Collector-Emitter Saturation Voltage vs.

Ambient Temperature (FODM121/2701/2705)

0.35

0.30

0.25

= 8mA

o

C

0.20

0.15

0.10

- Collector-Emitter Saturation Voltage(V)

0.05

CE(sat)

V

0.00

-40 -20 0 20 40 60 80 100 120

I

F

I

= 2.4mA

C

IF = 10mA

I

= 2mA

C

TA - Ambient Temperature (°C)

Fig. 3 Current Transfer Ratio vs. Forward Current

(FODM121/2701/2705)

TA = 25oC

= 10V

V

CE

= 5V

V

100

CE

CTR – Current Transfer Ratio (%)

10

0.1 1 10 100

IF - Forward Current (mA)

Fig. 5 Collector Current vs. Ambient Temperature

100

10

1

- Collector Current (mA)

C

I

0.1

(FODM121/2701/2705)

= 25mA

I

F

I

= 5mA

F

I

= 1mA

F

= 0.5mA

I

F

I

= 10mA

F

Fig. 4 Collector Current vs. Forward Current

100

TA = 25oC

10

1

- Collector Current (mA)

C

I

0.1

0.1 1 10 100

(FODM121/2701/2705)

= 10V

V

CE

IF - Forward Current (mA)

V

CE

Fig. 6 Collector Current vs. Collector-Emitter

Voltage

TA = 25oC

40

30

I

= 20mA

F

20

- Collector Current (mA)

C

I

10

(FODM121/2701/2705)

= 40mA

I

F

IF = 30mA

I

F

I

= 10mA

= 5mA

F

= 50mA

I

F

= 5V

VCE = 5V

0.01

-40 -20 0 20 40 60 80 100 120

TA - Ambient Temperature (°C)

0

0246810

VCE - Collector-Emitter Voltage (V)

= 1mA

I

F

©2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FODMXXX Rev. 1.1.4 4