TCET1204

Overview

The TCET1204 is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division, featuring a transistor output configuration. It provides an isolation voltage of 5000Vrms and operates within a temperature range of -55°C to 110°C. The device utilizes a 4-DIP package for through-hole mounting. Key electrical parameters include a maximum collector-emitter voltage of 70V and a peak forward current of 60mA. The typical turn-on time is 3µs with a rise time of 2µs, while the turn-off time is 2.3µs with a fall time of 2µs. The current transfer ratio ranges from 160% to 320% at a forward current of 10mA.

Feature Summary

• Provides high-voltage isolation between input and output circuits using optical coupling technology.
• Features a fast switching speed suitable for digital signal transmission applications.
• Designed for robust operation across extended industrial temperature ranges.

Applications

• Digital signal isolation in microprocessor systems
• Interface circuits for solid-state relays
• Noise immunity enhancement in industrial control panels

Procurement Notes

Verify the specific suffix designation against the manufacturer's latest datasheet to ensure compatibility with required packaging options and pin configurations. Confirm that the selected variant meets all necessary regulatory compliance standards for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a compact, single-channel solution with high-speed response is required. Ensure the 4-DIP footprint aligns with the PCB layout constraints. Validate that the 5000Vrms isolation rating exceeds the system's safety requirements and that the operating temperature range covers the intended environmental conditions.

Part Context

This part belongs to the CNY17 family of optoisolators, which are widely used for general-purpose isolation tasks. The TCET1204 specifically denotes a variant with a 4-pin DIP package, distinguishing it from other channel counts or package styles within the same product line offered by Vishay.

Replacement Considerations

Direct substitutes may include other Vishay parts within the CNY17 series that share identical pinouts and electrical characteristics but differ in package style or current transfer ratio specifications. Verify functional equivalence before substitution.