4N25S1(TA)-V

Overview

The 4N25S1(TA)-V is a single-channel phototransistor output optocoupler manufactured by Everlight Electronics Co Ltd. It integrates an infrared emitting diode with a phototransistor in a surface-mount package. Key electrical parameters include a maximum isolation voltage of 5000 Vrms, a minimum current transfer ratio of 20% at 10 mA input, and a peak forward current of 60 mA. The device supports a maximum output voltage of 80 V and operates within a temperature range of -55 °C to +110 °C.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits
• Integrates an infrared LED with a phototransistor for signal transmission
• Complies with RoHS standards and lead-free manufacturing requirements

Applications

• Digital logic circuit interfacing and signal transmission
• Power supply control and switching applications
• Electrical insulation and impedance transformation between circuits

Procurement Notes

Verify the specific suffix TA-V against official Everlight documentation to confirm surface mount configuration and compliance status. Ensure the procurement source provides valid datasheets matching the part number exactly. Confirm that the component meets required isolation voltage ratings for the intended application environment before finalizing orders.

Selection Notes

Select this component when a single-channel phototransistor output is required for low-power logic or power control. Consider the 5000 Vrms isolation rating for safety-critical interfaces. Evaluate the -55 °C to +110 °C operating range against environmental conditions. Compare the 20% minimum CTR with system sensitivity requirements to ensure reliable switching performance.

Part Context

This component belongs to the 4N25 series of optocouplers produced by Everlight Electronics. The series typically includes various packaging options such as DIP and SMD variants. The 4N25S1(TA)-V specifically denotes the surface mount version with defined thermal and electrical characteristics consistent with the broader family specifications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative components based on pinout, isolation voltage, and current transfer ratio specifications.