Optocoupler, Transistor, 5000Vrms; No. Of Channels:2 Channel; Optocoupler Case Style:Dip; No. Of Pins:8Pins; Forward Current If Max:60Ma; Isolation Voltage:5.3Kv; Ctr Min:50%; Collector Emitter Voltage V(Br)Ceo:70V; Product Range:- Rohs Compliant: Yes |Vishay CNY74-2H

Vishay CNY74-2H – Dual-Channel Optocoupler, 5300Vrms Isolation, Transistor Output

The Vishay CNY74-2H is a high-reliability dual-channel optocoupler engineered for critical signal isolation in demanding electronic systems. Featuring 5300Vrms isolation and transistor outputs, this obsolete component remains essential for legacy designs requiring robust noise immunity and voltage separation. PCX ensures authentic Vishay inventory with same-day shipping and dedicated technical support.

Key Features

• Dual-Channel Design: Two independent isolation channels in one 8-DIP package
• 5300Vrms Isolation Voltage: Superior protection against high-voltage transients
• Wide CTR Range: 50% to 600% at 5mA input current
• Fast Switching: 6µs typical turn-on / 5µs turn-off time
• High Temperature Operation: -55°C to +100°C range
• Rohs Compliant: Meets environmental standards

Technical Specifications

• Manufacturer: Vishay Semiconductor Opto Division
• Input Type: DC (Forward Voltage: 1.3V typical)
• Output Type: Transistor (Max Output Voltage: 70V)
• Current Transfer Ratio: 50% min / 600% max @ 5mA
• Switching Speed: Rise time 3µs / Fall time 4.7µs typical
• Package: 8-DIP (7.62mm) through-hole mounting
• Max Forward Current: 60mA

Common Applications

• Industrial control system isolation
• Power supply feedback circuits
• Medical equipment signal separation
• Telecom interface protection
• Microcontroller I/O buffering

About Vishay

Vishay Semiconductor Opto Division is a global leader in optoelectronic solutions with over 50 years of innovation. Their components are renowned for meeting stringent industrial and automotive reliability standards, with rigorous quality control processes ensuring consistent performance in critical applications.

Vishay’s optocouplers undergo extensive testing for isolation integrity, temperature resilience, and long-term stability. This commitment to excellence makes them the preferred choice for engineers designing safety-critical systems where component failure is not an option.

About Optocouplers

Optocouplers (also called optoisolators) provide galvanic isolation between circuits using light to transmit signals across an insulation barrier. This prevents high-voltage surges, ground loops, and electrical noise from damaging sensitive components while enabling signal transfer.

Transistor-output optocouplers like the CNY74-2H are fundamental in power regulation, industrial automation, and safety systems. Their ability to interface low-voltage control circuits with high-power stages makes them indispensable for modern electronics requiring reliable voltage separation and noise immunity.

Packaging

Available in protective Tube packaging. Contact PCX for bulk requirements.

FAQs

Q: Is this optocoupler suitable for AC input applications?
A: No, the CNY74-2H is designed for DC input signals only as specified in its datasheet.

Q: What does “obsolete” status mean for availability?
A: While no longer in production, PCX maintains stock of legacy components like this for repair and maintenance needs.

Q: Can I parallel the two channels for higher current?
A: Yes, channels can be paralleled to increase output current capacity while maintaining isolation.

Q: What’s the typical lifespan of this optocoupler?
A: Vishay optocouplers typically exceed 100,000 hours MTBF when operated within datasheet specifications.

Q: Does the 5300Vrms rating protect against lightning surges?
A: It provides robust isolation against common industrial transients, but dedicated surge protectors are recommended for direct lightning exposure.

Q: How does CTR affect circuit design?
A: Current Transfer Ratio determines output efficiency. Designers must account for the 50-600% range when calculating resistor values for stable operation.

Access the full datasheet: Vishay CNY74-2H Specifications

Product images are representational. Refer to datasheet for exact dimensions.

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