TCET1103

Overview

The TCET1103 is a single-channel optocoupler manufactured by Vishay Semiconductor Opto Division, featuring a phototransistor output with an integrated base terminal. It provides 5000Vrms isolation voltage and operates within a temperature range of -55°C to 100°C. The device supports a maximum DC forward current of 60 mA and delivers an output current of 50 mA per channel. Typical switching times include 6µs for turn-on and 5µs for turn-off, with rise and fall times of 3µs and 4.7µs respectively. The current transfer ratio ranges from 100% to 200% at 10 mA input.

Feature Summary

• Integrated phototransistor output with accessible base terminal for enhanced control
• High isolation voltage capability of 5000Vrms for reliable signal transmission
• Optimized for high-temperature operation up to 100°C
• Fast switching characteristics suitable for digital signal applications

Applications

• Digital signal isolation in low-voltage circuits
• Interface between microcontrollers and high-voltage loads
• General-purpose isolation in industrial control systems

Procurement Notes

Verify the specific package variant, as sources indicate both 4-DIP and other configurations. Confirm RoHS compliance status and ensure the ordering suffix matches the required lead time and packaging type. Cross-reference the datasheet for exact pinout and thermal specifications before integration.

Selection Notes

Select this component when base access for the phototransistor is required to improve switching speed or linearity. Consider the 5000Vrms isolation rating for safety-critical interfaces. Evaluate the 60 mA forward current limit against circuit requirements and ensure compatibility with the intended operating temperature range.

Part Context

The TCET1103 belongs to Vishay's family of transistor-output optocouplers designed for robust performance. It shares functional similarities with models like TCLT1103 but differs in package and specific electrical parameters. This part is distinct from AC-input variants like IL252-X007T, focusing on DC input applications.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with direct replacements such as CNY17 series only if pinout and electrical specs match exactly.