CNY17F4TM

Overview

The CNY17F4TM is a single-channel transistor output optocoupler from onsemi, housed in a 6-pin MDIP package. It features an NPN phototransistor output with no base connection. Key electrical parameters include a maximum collector-emitter voltage of 70V and a collector current of 50mA. The device offers a high isolation voltage of 7500V AC (or 4170Vrms depending on certification). Typical switching times are 6μs for rise time and 24μs for fall time. The current transfer ratio ranges from 160% to 320% at a forward current of 10mA. Operating temperature spans from -40°C to 100°C.

Feature Summary

• Provides galvanic isolation between input and output circuits using an infrared LED and NPN phototransistor pair.
• Offers high isolation voltage capability suitable for protecting low-voltage control circuits from high-voltage noise or transients.
• Features a standard 6-pin through-hole DIP package designed for reliable mounting on printed circuit boards.

Applications

• Signal isolation in industrial control systems
• Switching power supply feedback loops
• Microcontroller interface isolation

Procurement Notes

Verify the specific suffix 'TM' against official onsemi documentation to confirm pinout and mechanical dimensions match the required 6-DIP form factor. Ensure the selected variant meets the necessary insulation coordination standards for the target application environment. Cross-reference datasheet revisions to confirm compliance with current RoHS directives and material declarations before finalizing procurement orders.

Selection Notes

Select this component when a cost-effective, general-purpose optocoupler with moderate speed is required. The CNY17F4 series is suitable for applications where propagation delay is not critical. Consider the 7500V AC isolation rating for safety requirements. Compare against surface-mount variants like CNY17F4SM if board space constraints dictate SMD packaging instead of through-hole installation.

Part Context

The CNY17F4TM belongs to the CNY17 family of optocouplers, which are widely used standard products for basic isolation needs. This family typically includes various package options such as SOP and DIP configurations. The TM suffix specifically denotes the through-hole DIP version, distinguishing it from surface-mount alternatives within the same electrical specification group offered by onsemi.

Replacement Considerations

Direct substitutes may include other CNY17 series variants with different package suffixes, provided the pinout compatibility is verified. Generic replacements must match the 70V Vceo, 50mA Ico, and similar CTR specifications. Verify that any alternative part maintains the required 4170Vrms or 7500VAC isolation rating for safety compliance.