TCLT1103

Overview

The TCLT1103 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor with a base terminal, housed in a 6-SOP (5-pin) surface-mount package. Key electrical parameters include a maximum collector-emitter voltage of 80V and a peak output current of 50mA. The device provides a high current transfer ratio ranging from 100% to 200% at a forward current of 10mA. It supports a maximum DC forward current of 60mA and offers an isolation voltage of 5000Vrms. Operating temperatures range from -55°C to 100°C.

Feature Summary

• Integrates an infrared emitting diode with an NPN phototransistor featuring a base terminal for enhanced switching control.
• Provides robust electrical isolation with a rated insulation voltage of 5000Vrms between input and output circuits.
• Delivers high current transfer efficiency with a specified ratio of 100% to 200% under standard operating conditions.
• Designed for surface-mount technology using a compact 6-SOP, 5-lead package suitable for automated assembly.

Applications

• Signal isolation in industrial control systems
• Interface circuits for microprocessors and logic systems
• Power supply feedback loops
• Communication channel isolation

Procurement Notes

Verify the specific ordering suffix against the official Vishay datasheet to ensure the correct package variant and tape/reel configuration. Confirm that the component meets RoHS directives and relevant safety standards such as UL1577 or VDE before integration. Check the manufacturer's latest documentation for any updates regarding lead-free soldering profiles and storage sensitivity classifications.

Selection Notes

Select this component when high-speed switching is required alongside strong signal isolation capabilities. The built-in base terminal allows for faster turn-off times compared to standard phototransistors. Ensure the application voltage does not exceed the 80V collector-emitter limit and that the forward current remains within the 60mA maximum rating to maintain reliability and thermal stability.

Part Context

This part belongs to the TCLT11xx series of transistor output optocouplers from Vishay. The series is characterized by high current transfer ratios and fast switching speeds. The TCLT1103 specifically denotes the variant with a 100-200% CTR range, distinguishing it from other series members with different gain specifications or package types.

Replacement Considerations

Consult the official Vishay cross-reference guide for verified substitutes. Potential alternatives may include other Vishay parts within the TCET or TCLT families that share similar pinouts and electrical characteristics. Verify compatibility with existing PCB footprints and isolation requirements before substitution.

FAQ

What is the typical rise and fall time for the TCLT1103?

The typical rise time is 3 microseconds and the typical fall time is 4.7 microseconds.

Does the phototransistor output have a base connection?

Yes, the TCLT1103 features an NPN phototransistor with a base terminal, which facilitates faster switching performance.