TCET1101

Overview

The TCET1101 is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division, featuring a phototransistor output. It provides an isolation voltage of 3750Vrms and operates within a temperature range of -40°C to 100°C. The device supports a maximum forward current of 60 mA and delivers an output current of 50 mA per channel. Key electrical characteristics include a typical forward voltage of 1.35V, a collector-emitter saturation voltage of 300mV, and a current transfer ratio ranging from 40% to 80% at 10mA input. Switching times are specified with turn-on/turn-off values of 9.5µs and 8.5µs, respectively.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits using a phototransistor configuration.

Applications

• General-purpose signal isolation in electronic circuits
• Interface applications requiring DC or low-frequency signal transmission

Procurement Notes

Verify the specific package variant against design requirements, as the component is available in surface-mount configurations such as 4-SOP. Confirm compliance with RoHS3 standards and REACH regulations prior to integration. Ensure that the selected packaging format aligns with automated assembly processes if applicable.

Selection Notes

Select this component when a compact surface-mount solution is required for basic transistor-output isolation. Consider the 3750Vrms isolation rating and the specific switching speed characteristics relative to system timing constraints. Evaluate the current transfer ratio range to ensure adequate signal gain for the intended load conditions.

Part Context

This part belongs to the TCMT1100 series family, which includes various pinout and package options for phototransistor optocouplers. It serves as a standard isolation device for general industrial and consumer electronics applications where moderate speed and reliable galvanic separation are necessary.

Replacement Considerations

Direct substitutes within the same manufacturer family include other variants of the TCMT1100 series with different pin assignments or packages. Cross-manufacturer replacements require matching isolation voltage, output type, and package dimensions.