TCLT1108

Overview

The TCLT1108 is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division, featuring a transistor output with an accessible base terminal. It provides high isolation capability with a rated voltage of 5000Vrms between input and output circuits. The device utilizes a compact 6-SOP package containing five leads, designed for surface-mount applications. Key electrical specifications include a maximum collector-emitter saturation voltage of 300mV and a continuous output current capacity of 50mA per channel. The unit operates within a temperature range of -55°C to 100°C.

Feature Summary

• Integrates a phototransistor output with a dedicated base pin for enhanced control flexibility
• Provides robust galvanic isolation suitable for sensitive signal transmission across potential barriers
• Features low saturation voltage characteristics to minimize power loss in switching operations

Applications

• Industrial control systems requiring reliable signal isolation
• Power supply feedback loops for voltage regulation
• Communication interfaces needing noise immunity

Procurement Notes

Verify the specific ordering suffix against the official datasheet to ensure compatibility with required packaging options such as tape and reel configurations. Confirm that the component status remains active before finalizing procurement plans. Cross-reference the manufacturer product number with distributor catalogs to validate authenticity and traceability. Ensure all technical parameters meet the design requirements prior to purchase.

Selection Notes

Select this component when a transistor output with base access is necessary for precise current control or linear operation modes. Consider the 5000Vrms isolation rating for applications involving high-voltage separation. Evaluate the 6-SOP footprint constraints against available PCB space. Verify that the operating temperature range aligns with the environmental conditions of the intended deployment scenario.

Part Context

This component belongs to the TCLT series of optocouplers from Vishay, which are engineered for general-purpose isolation tasks. The series emphasizes compact packaging and reliable performance in industrial environments. The TCLT1108 specifically differentiates itself through its base-accessible transistor output, offering designers additional configuration options compared to standard phototransistor outputs.

Replacement Considerations

The TCET1108G is identified as an available substitute option. Verify pinout compatibility and electrical parameter equivalence before substitution. Ensure the alternative package type matches the existing board layout constraints.