The CNY17-4VM is a single-channel phototransistor optocoupler. Manufactured by Fairchild Semiconductor (now ON Semiconductor), this device consists of an infrared emitting diode (IRED) optically coupled to a phototransistor. It is designed for electrical isolation in various applications, preventing high voltages or transient signals from interfering with sensitive circuitry.

Applications

• AC Line/Digital Logic Isolation
• Switching Power Supplies
• Computer Peripheral Interface
• Microprocessor System I/O
• Industrial Control Equipment

Features

• High Isolation Voltage: Offers significant electrical isolation between the input and output sides, enhancing safety and preventing ground loops.
• High Current Transfer Ratio (CTR): Provides efficient signal transfer from the input to the output, reducing the need for high input currents.
• Compact Package: Space-saving design allows for high-density mounting on circuit boards.
• UL and VDE Approved: Meets stringent safety standards for use in various applications.
• Wide Operating Temperature Range: Suitable for use in diverse environmental conditions.

Benefits

• Enhanced Safety: The high isolation voltage protects sensitive circuits and personnel from hazardous voltages.
• Efficient Signal Transfer: The high CTR minimizes power consumption and simplifies circuit design.
• Reduced Board Space: The compact package enables smaller and more efficient circuit layouts.
• Compliance with Safety Standards: UL and VDE approvals ensure that the device meets required safety regulations.
• Reliable Performance: The wide operating temperature range ensures consistent performance in various environments.

Additional Details

The CNY17-4VM typically comes in a DIP (Dual In-Line Package). Key specifications include:

• Isolation Voltage: Typically 5000 Vrms
• Current Transfer Ratio (CTR): Typically between 50% and 600% (depending on the specific variant and test conditions)
• Collector-Emitter Voltage: Typically 70V
• Collector Current: Typically 50mA
• Operating Temperature: Typically -55°C to +100°C

This optocoupler is widely used in applications requiring electrical isolation, such as in power supplies, motor control circuits, and communication interfaces. Its robust design and compliance with safety standards make it a reliable choice for many industrial and commercial applications.