4N25/ 4N26/ 4N27/ 4N28

Document Number 83725

Rev. 1.4, 26-Jan-05

Vishay Semiconductors

www.vishay.com

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Optocoupler, Phototransistor Output, With Base Connection

Features

• Interfaces with Common Logic Families

• Input-output Coupling Capacitance < 0.5 pF

• Industry Standard Dual-in-line 6-pin Package

• Lead-free component

• Component in accordance to RoHS 2002/95/EC

and WEEE 2002/96/EC

Agency Approvals

• UL1577, File No. E52744 System Code H or J,

Double Protection

• DIN EN 60747-5-2 (VDE0884)

DIN EN 60747-5-5 pending

Available with Option 1

Applications

AC Mains Detection

Reed relay driving

Switch Mode Power Supply Feedback

Telephone Ring Detection

Logic Ground Isolation

Logic Coupling with High Frequency Noise Rejection

Description

The 4N25 family is an Industry Standard Single Chan-

nel Phototransistor Coupler.This family includes the

4N25/ 4N26/ 4N27/ 4N28. Each optocoupler consists

of gallium arsenide infrared LED and a silicon NPN

phototransistor.

These couplers are Underwriters Laboratories (UL)

age. This isolation performance is accomplished

through special Vishay manufacturing process.

Compliance to DIN EN 60747-5-2(VDE0884)/ DIN EN

60747-5-5 pending partial discharge isolation specifi-

cation is available by ordering option1.

These isolation processes and the Vishay ISO9001

quality program results in the highest isolation perfor-

mance available for a commercial plastic phototrans-

istor optocoupler.

The devices are also available in lead formed config-

uration suitable for surface mounting and are avail-

able either on tape and reel, or in standard tube

shipping containers.

Note:

For additional design information see Application

Note 45 Normalized Curves

Order Information

For additional information on the available options refer to

Option Information.

Part

Remarks

4N25

CTR > 20 %, DIP-6

4N26

CTR > 20 %, DIP-6

4N27

CTR > 10 %, DIP-6

4N28

CTR > 10 %, DIP-6

4N25-X006

CTR > 20 %, DIP-6 400 mil (option 6)

4N25-X007

CTR > 20 %, SMD-6 (option 7)

4N25-X009

CTR > 20 %, SMD-6 (option 9)

4N26-X006

CTR > 20 %, DIP-6 400 mil (option 6)

4N26-X007

CTR > 20 %, SMD-6 (option 7)

4N26-X009

CTR > 20 %, SMD-6 (option 9)

4N27-X007

CTR > 10 %, SMD-6 (option 7)

4N27-X009

CTR > 10 %, SMD-6 (option 9)

4N28-X009

CTR > 10 %, SMD-6 (option 9)