TCDT1100

Overview

The TCDT1100 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output with a minimum current transfer ratio of 40% and a maximum of 80%. The device provides 5000 Vrms isolation voltage and operates within a temperature range of -40°C to +100°C. Key electrical parameters include a maximum collector-emitter voltage of 32V, a maximum collector current of 50mA, and a forward voltage of 1.6V at 60mA forward current. Rise and fall times are specified at 7µs and 6.7µs respectively.

Feature Summary

• Provides high-voltage electrical isolation between input and output circuits via an internal LED and phototransistor structure.
• Utilizes a through-hole PDIP-6 package for reliable mounting in standard circuit board applications.
• Delivers fast switching performance suitable for digital signal transmission and logic interface requirements.

Applications

• Digital signal isolation in communication interfaces
• Logic level shifting between different voltage domains
• Switching power supply feedback loops

Procurement Notes

Verify the specific manufacturer designation when sourcing, as availability may vary due to product lifecycle status. Confirm that the PDIP-6 package matches your PCB footprint requirements. Ensure that the 5000 Vrms isolation rating meets your safety compliance standards for the intended application environment.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed is required. Consider the 32V collector-emitter voltage limit for load compatibility. The 40-80% CTR range supports direct driving of many logic inputs without additional amplification stages.

Part Context

This part belongs to Vishay's discrete optoisolator portfolio designed for general-purpose isolation tasks. It complements other series members like the TCET1100G which offers higher CTR ranges but differs in pin count and package configuration. The TCDT1100 serves as a foundational component for basic galvanic isolation needs.

Replacement Considerations

Check for direct substitutes within the same Vishay family or equivalent parts from other manufacturers offering similar 6-pin DIP packages and comparable isolation voltages. Verify pinout compatibility before substitution.