CNY17F-4X017T

Overview

The CNY17F-4X017T is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and operates in surface-mount (SMD/SMT) packages, specifically the 6-SMD gull-wing configuration. The device provides 5000 Vrms isolation voltage between input and output circuits. Key electrical parameters include a current transfer ratio (CTR) ranging from 160% to 320% at a forward current of 10 mA. The maximum collector-emitter voltage is 70 V, with a maximum collector current of 50 mA. The component supports a maximum forward current of 60 mA and has a typical rise/fall time of 2 µs/2 µs. It is rated for operation within a temperature range of -55°C to +110°C.

Feature Summary

• Provides high-voltage electrical isolation via 5000 Vrms dielectric barrier
• Integrates an infrared emitting diode with an NPN phototransistor for signal transmission
• Offers consistent current transfer characteristics across specified operating conditions
• Designed for surface-mount assembly to facilitate automated PCB placement

Applications

• Industrial control systems requiring galvanic isolation
• Signal interfacing between microcontrollers and high-voltage loads
• Power supply feedback loops for circuit protection
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix X017T against official Vishay documentation to confirm the exact tape-and-reel packaging quantity and pin assignment orientation. Ensure the selected variant matches the required CTR binning (160-320%) for the intended application design margins. Cross-reference the datasheet revision date to confirm compliance with current RoHS and REACH regulatory standards before finalizing procurement orders.

Selection Notes

Select this component when surface-mount technology is required for space-constrained designs while maintaining high isolation voltage ratings. The CNY17F-4X017T is suitable for applications demanding moderate switching speeds with a 2 µs response time. Engineers should consider the 50 mA collector current limit and verify that the load impedance allows for proper saturation within the 400 mV Vce(sat) specification under worst-case temperature conditions.

Part Context

This part belongs to the CNY17 family of optocouplers, which are widely used for general-purpose isolation. The 'F' designation typically indicates enhanced safety certifications or specific material compositions compared to standard variants. The '4' suffix denotes the specific Current Transfer Ratio bin, ensuring predictable gain characteristics. The 'X017T' suffix identifies the specific SMD package style and reel packaging format provided by the manufacturer.

Replacement Considerations

Direct replacements must match the 6-SMD gull-wing footprint and 5000 Vrms isolation rating. Verify that substitute parts offer comparable CTR ranges (160-320%) and similar switching times. Ensure alternative components support the same 70 V collector-emitter voltage and 50 mA current limits. Check for equivalent safety agency approvals if used in certified end-products.