TCLT1002

Overview

The TCLT1002 is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division, featuring a phototransistor output coupled to a gallium arsenide infrared-emitting diode. It provides an isolation voltage of 5000Vrms and operates within a temperature range of -55°C to 100°C. The device supports a maximum forward current of 60 mA with a typical forward voltage of 1.6 V. Key electrical parameters include a collector-emitter voltage of 70 V, a maximum output current of 50 mA per channel, and a current transfer ratio ranging from 63% to 125%. Switching characteristics include a turn-on time of 3 µs and a turn-off time of 4.7 µs.

Feature Summary

• Integrates a phototransistor with a gallium arsenide infrared-emitting diode for optical signal transmission
• Provides robust electrical isolation rated at 5000Vrms between input and output circuits
• Designed for surface-mount installation in compact 4-lead SOP4L packages

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microprocessors and logic devices
• Power supply feedback loops requiring galvanic separation

Procurement Notes

Verify the specific package variant and lead configuration against the official datasheet before ordering. Ensure that the selected component meets the required isolation voltage standards for the target application environment. Confirm compliance with RoHS directives and check for any specific handling instructions related to moisture sensitivity levels during storage and assembly processes.

Selection Notes

Select this component when a low-profile surface-mount solution is required for isolating digital signals. Consider the 70 V collector-emitter voltage limit and the 50 mA output current capability to ensure compatibility with downstream circuitry. Evaluate the switching speed requirements against the specified 3 µs turn-on and 4.7 µs turn-off times to guarantee adequate performance for the intended data rate.

Part Context

The TCLT1002 belongs to the TCLT100 series of transistor-output optocouplers produced by Vishay. This series is characterized by its use of gallium arsenide LEDs and phototransistors housed in small form-factor packages. It serves as a standard solution for applications needing reliable electrical isolation in space-constrained designs, distinct from DIP-packaged alternatives or high-speed logic-output variants.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation.