TCMT4100

Overview

The TCMT4100 is a quad phototransistor output optocoupler from Vishay, featuring four independent channels within a single 16-pin SOP package. It integrates a gallium arsenide infrared-emitting diode with a phototransistor for signal isolation. The device provides an insulation voltage of 3750Vrms and supports a collector-emitter voltage of 70V. Current transfer ratio ranges from 50% to 600% at a forward current of 1mA. Typical rise and fall times are 3μs and 4.7μs respectively, operating between -40°C and 100°C.

Feature Summary

• Quad channel configuration in a compact surface-mount package
• High current transfer ratio capability for low input current operation
• Robust electrical isolation with high insulation voltage rating

Applications

• General purpose digital signal isolation
• Industrial control systems requiring multi-channel isolation
• Power supply feedback circuits

Procurement Notes

Verify the specific ordering suffix against official Vishay documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the requested variant matches the required safety agency approvals such as UL or EN standards. Cross-reference the component marking code with the datasheet to distinguish between standard production runs and any specialized automotive or industrial grades if applicable.

Selection Notes

Select this component when multiple isolated channels are required in a space-constrained design. The quad topology reduces board area compared to discrete single-channel units. Ensure the application voltage does not exceed the 70V collector-emitter limit. Verify that the required isolation voltage meets the system's safety requirements, as the 3750Vrms rating suits many industrial standards.

Part Context

This part belongs to the TCMT series of Vishay optocouplers, which are designed for general-purpose isolation applications. The series utilizes gallium arsenide LEDs and silicon phototransistors. The TCMT4100 specifically addresses the need for multi-channel isolation in a small footprint, serving as a cost-effective alternative to using multiple individual optocouplers.

Replacement Considerations

Public confirmed substitute part numbers: TCMT4106.