TCDT1120G

Overview

The TCDT1120G is a single-channel optoisolator manufactured by Vishay Semiconductor Opto Division. It integrates a gallium arsenide infrared emitting diode with a phototransistor output, housed in a 6-lead plastic dual inline package (DIP). The device provides an isolation voltage of 5000Vrms and supports a collector-emitter voltage of 70V. Designed for through-hole mounting, it ensures reliable signal transmission across isolated circuits while maintaining electrical safety standards.

Feature Summary

• Integrates a gallium arsenide infrared LED with a phototransistor for optical coupling
• Provides high isolation voltage capability of 5000Vrms between input and output
• Utilizes a standard 6-lead plastic dual inline package for through-hole installation

Applications

• Switch-mode power supplies
• Line receiver circuits
• Computer peripheral interface systems
• Microprocessor system interfaces

Procurement Notes

Verify the component marking matches the TCDT1120G designation to ensure authenticity from Vishay Semiconductor Opto Division. Confirm the package type is the 6-DIP configuration and check for RoHS compliance status as indicated in official documentation. Ensure the supplier provides valid traceability records and datasheet references to avoid counterfeit parts.

Selection Notes

Select this component when a single-channel isolation solution with 5000Vrms rating is required. Consider the 70V collector-emitter voltage limit for output circuit design. The DIP package suits prototyping or low-volume production where through-hole technology is preferred over surface mount alternatives.

Part Context

This part belongs to the TCDT1120 series, which includes variants like the TCDT1120. The 'G' suffix typically denotes lead-free packaging compliant with environmental directives. The series maintains consistent electrical characteristics across variants while differing primarily in material composition or packaging specifications.

Replacement Considerations

Direct substitutes include other Vishay TCDT1120 series components with matching pinout and isolation ratings. Verify that alternative parts maintain the same 5000Vrms isolation and 70V output voltage limits before integration.