TCLT1004

Overview

The TCLT1004 is a single-channel transistor output optoisolator manufactured by Vishay Semiconductor Opto Division. It features an infrared-emitting gallium arsenide diode optically coupled to a phototransistor within a compact 4-lead SOP4L surface-mount package. The device provides robust electrical isolation with a rated voltage of 5000Vrms between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage (Vceo) of 70V, a continuous output current capability of 50mA per channel, and a typical forward voltage (Vf) of 1.39V. The unit supports a maximum DC forward current of 60mA and operates reliably across an extended temperature range from -55°C to 100°C.

Feature Summary

• Integrates a gallium arsenide infrared-emitting diode with a phototransistor for high-speed signal transmission
• Provides strong galvanic isolation between input and output circuits via a dielectric barrier
• Designed for surface-mount assembly using a compact 4-lead SOP4L package configuration

Applications

• Signal isolation in microprocessor-based control systems
• Switching power supply feedback loops
• Industrial communication interface protection

Procurement Notes

Verify the specific suffix designation against official Vishay documentation to confirm exact packaging and tape-and-reel specifications. Confirm that the selected variant meets all required environmental standards, including RoHS compliance and moisture sensitivity levels, prior to finalizing procurement orders.

Selection Notes

Select this component when a small footprint surface-mount solution is required for isolating low-power digital signals. Ensure the application voltage does not exceed the 70V collector-emitter rating and that the operating temperature remains within the specified -55°C to 100°C range for reliable performance.

Part Context

This part belongs to the TCLT100 series of transistor-output optocouplers. The series offers various package options and current transfer ratios to suit different isolation requirements. The TCLT1004 specifically utilizes the SOP4L form factor, distinguishing it from through-hole DIP variants within the broader product family.

Replacement Considerations

Cross-reference with other Vishay SOP4L optocouplers such as the TCLT1000 or TCLT1002 if pinout compatibility and similar electrical characteristics are required. Verify that substitute parts match the specific current transfer ratio and isolation voltage ratings of the original design.