TCMT1110

Overview

The TCMT1110 is a single-channel phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an infrared-emitting diode optically coupled to a phototransistor within a 4-lead Mini-Flat plastic package. The device provides high isolation voltage of 3750Vrms and operates over a wide ambient temperature range from -40°C to +110°C. Key electrical parameters include a minimum current transfer ratio of 50% at 5mA input current, with a maximum collector-emitter saturation voltage of 200mV. The component supports surface mount installation and is designed for reliable signal transmission in compact electronic circuits.

Feature Summary

• High isolation voltage capability of 3750Vrms ensures safe signal transmission between isolated circuits.
• Wide operating temperature range from -40°C to +110°C allows functionality in harsh environmental conditions.
• Compact 4-lead Mini-Flat package design facilitates efficient space utilization in surface mount applications.

Applications

• Industrial control systems requiring galvanic isolation
• Communication equipment signal interfacing
• Power supply feedback loops

Procurement Notes

Verify the specific suffix and marking code on the component body to confirm it matches the TCMT1110 designation exactly. Ensure that the supplier provides official datasheets confirming the 3750Vrms isolation rating and the specified current transfer ratio characteristics. Check for compliance with relevant safety standards required for your application environment before finalizing procurement decisions.

Selection Notes

Select this component when high isolation voltage and wide temperature operation are critical requirements. Consider the Mini-Flat package dimensions for PCB layout constraints. Evaluate the current transfer ratio specifications against the driving circuit capabilities to ensure adequate signal margin. Compare alternative devices only if specific pinout or package variations are needed for existing board designs.

Part Context

The TCMT1110 belongs to the TCMT11xx series of optocouplers from Vishay. This series utilizes gallium arsenide infrared-emitting diodes coupled to phototransistors in plastic Mini-Flat packages. The family offers various current transfer ratio options to suit different sensitivity requirements while maintaining consistent physical footprint and isolation performance characteristics across the product line.

Replacement Considerations

TCMT1101 is listed as a similar replacement option from the same manufacturer. Verify compatibility regarding isolation voltage ratings and current transfer ratios before substitution. Ensure that any substitute component meets the same thermal and electrical specifications required by the original design constraints.