Optocoupler, Phototransistor Output,
with Base Connection
www.vishay.com For technical questions, contact: optocoupler.answers@vishay.com Document Number: 81864
1Rev. 1.0, 11-Mar-08
4N25-X000/4N26-X000/4N27-X000/4N28-X000
Vishay Semiconductors
DESCRIPTION
The 4N25 family is an Industry Standard Single Channel
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) listed to
comply with a 5300 VRMS isolation test voltage. This isolation
performance is accomplished through special Vishay
manufacturing process.
Compliance to DIN EN 60747-5-2 (VDE 0884)/
DIN EN 60747-5-5 pending partial discharge isolation
specification is available by ordering option 1.
These isolation processes and the Vishay ISO9001 quality
program results in the highest isolation performance
available for a commercial plastic phototransistor
optocoupler.
The devices are also available in lead formed configuration
suitable for surface mounting and are available either on
tape and reel, or in standard tube shipping containers.
Note
For additional design information see application note 45 normalized curves
FEATURES
• Isolation test voltage 5300 VRMS
• Interfaces with common logic families
• Input-output coupling capacitance < 0.5 pF
• Industry standard dual-in-line 6-pin package
• Lead (Pb)-free component
• Component in accordance to RoHS
2002/95/EC and WEEE 2002/96/EC
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
AGENCY APPROVALS
• UL1577, file no. E52744 system code H or J, double
protection
• DIN EN 60747-5-2 (VDE 0884)
DIN EN 60747-5-5 pending
available with option 1
Note
For additional information on the available options refer to option information.
i179004
1
2
3
6
5
4
B
C
E
A
C
NC
ORDER INFORMATION
PART REMARKS
4N25-X000 CTR > 20 %, DIP-6
4N26-X000 CTR > 20 %, DIP-6
4N27-X000 CTR > 10 %, DIP-6
4N28-X000 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)