4N25, 4N26, 4N27, 4N28
Vishay Semiconductors Optocoupler, Phototransistor Output, with Base Connection
FEATURES
A 1 6 B C 2 5 C NC 3 4 E • Isolation test voltage 5000 VRMS
• Interfaces with common logic families
• Input-output coupling capacitance < 0.5 pF
• Industry standard dual-in-line 6 pin package
• Compliant to RoHS directive 2002/95/EC and
in accordance to WEEE 2002/96/EC 21842 APPLICATIONS
i179004-5 • AC mains detection
• Reed relay driving DESCRIPTION • Switch mode power supply feedback 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. • Telephone ring detection
• Logic ground isolation
• Logic coupling with high frequency noise rejection AGENCY APPROVALS
• UL1577, file no. E52744
• BSI: EN 60065:2002, EN 60950:2000
• FIMKO: EN 60950, EN 60065, EN 60335 ORDER INFORMATION
PART REMARKS 4N25 CTR > 20 %, DIP-6 4N26 CTR > 20 %, DIP-6 4N27 CTR > 10 %, DIP-6 4N28 CTR > 10 %, DIP-6 ABSOLUTE MAXIMUM RATINGS
PARAMETER (1) TEST CONDITION SYMBOL VALUE UNIT VR 5 V
mA INPUT
Reverse voltage
…
