CNY74-2H – VISHAY
Optoisolator, Transistor Output, 5300Vrms, 2-Channel, 8-DIP
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Overview
The Vishay CNY74-2H is a high-reliability, dual-channel NPN phototransistor optocoupler designed for robust signal isolation in demanding environments. Its critical operational characteristic is the high 5300 Vrms isolation voltage, essential for protecting sensitive control circuitry from transient overvoltages and noise. A key design consideration when implementing the CNY74-2H is the trade-off between achieving a high Current Transfer Ratio (CTR) and maintaining acceptable switching speeds; maximizing CTR often necessitates higher forward currents, which can increase power dissipation and potentially impact the phototransistor’s response time.
Key Features
- Isolation Voltage: 5300 Vrms
- Output Type: Dual NPN Phototransistor
- Current Transfer Ratio (CTR): 50% to 600%
- Maximum Collector Emitter Voltage: 70 V
- Forward Current (If): 60 mA
- Package: 8-Pin DIP (9.8mm x 6.3mm x 3.6mm)
Applications
The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.
- Isolation of high-voltage power supply control signals
- Signal coupling in industrial automation interfaces
- Protection of microcontrollers from ground loop noise
- Switching applications in telecommunications equipment
