TCDT1110

Overview

The TCDT1110 is a single-channel transistor output optoisolator manufactured by Vishay Semiconductor Opto Division. It integrates an NPN phototransistor with a gallium arsenide infrared-emitting diode in a 6-DIP package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum collector current of 50 mA, and a minimum current transfer ratio of 40%. The device features an isolation voltage of 5300 Vrms, a forward voltage of 1.6 V, and a maximum forward current of 60 mA. Timing characteristics specify a rise time of 3 µs and a fall time of 3.7 µs.

Feature Summary

• Optical coupling between a gallium arsenide infrared-emitting diode and an NPN phototransistor for signal transmission.
• High insulation capability provided by a 5300 Vrms isolation voltage rating.
• Through-hole mounting configuration utilizing a standard 6-pin dual inline plastic package.

Applications

• General purpose digital signal isolation
• Interface between microcontrollers and high-voltage circuits
• Switching applications requiring galvanic isolation

Procurement Notes

Verify the specific suffix (e.g., G) against the datasheet to confirm compliance with relevant safety standards such as UL1577 or IEC standards. Ensure the selected component matches the required through-hole package dimensions and lead form for PCB integration. Confirm that the operating temperature range aligns with the intended environmental conditions before finalizing procurement.

Selection Notes

Select this component when a robust through-hole solution is required for moderate-speed switching applications. The 70 V collector-emitter voltage and 50 mA current capacity suit general logic interfacing tasks. Consider the 3 µs rise time for timing-sensitive designs. Verify that the 6-DIP footprint accommodates the board layout constraints compared to surface-mount alternatives.

Part Context

The TCDT1110 belongs to Vishay's family of transistor output optoisolators designed for reliable electrical isolation. It serves as a bridge between low-voltage control circuits and higher-voltage loads. The device is part of a broader series including variants like the TCDT1120, which may offer different packaging or specific certification options while maintaining similar core electrical performance characteristics.

Replacement Considerations

Public confirmed substitute part numbers are not explicitly listed in the provided source material for direct cross-reference. Users should consult official manufacturer substitution guides or equivalent parameter matching for alternative sourcing.