DC34-TP

Overview

The DC34-TP is a bidirectional trigger diode manufactured by Micro Commercial Components. It functions as a voltage reference device with a fixed breakover voltage, typically available in 32V and 40V variants. The component utilizes glass passivation to ensure parameter stability and protection against junction contamination. Designed for surface-mount applications, it supports automated pick-and-place equipment through its compact package form factor. The device operates within a specified temperature range suitable for general electronic circuits requiring reliable triggering characteristics.

Feature Summary

• Bidirectional conduction capability for AC signal triggering
• Glass passivation for enhanced junction stability
• Compact surface-mount package design

Applications

• Triac gate control circuits
• Fluorescent lamp ballast starting elements
• Voltage reference applications in trigger circuits

Procurement Notes

Verify the specific breakover voltage variant (32V or 40V) required for the application, as the base part number may denote a series rather than a single fixed value. Confirm package compatibility with existing PCB footprints. Ensure supplier documentation matches the intended electrical specifications before integration into production designs.

Selection Notes

Select this component when a bidirectional trigger device is needed for triac firing or lamp ballast circuits. Consider the operating temperature range and power dissipation limits relative to the circuit environment. Compare breakover voltage tolerances against the target triac gate threshold requirements to ensure reliable switching performance.

Part Context

This component belongs to the family of silicon bidirectional trigger diodes, often associated with the DB3 series functionality. It serves as a cost-effective alternative for lighting and motor control applications where precise voltage referencing is not critical but reliable triggering is required. The TP suffix typically indicates a specific tape and reel packaging configuration from MCC.

Replacement Considerations

Direct substitutes include other bidirectional trigger diodes such as the DB3 or LLDB-3. Verify that replacement parts match the breakover voltage tolerance and package dimensions. Ensure the substitute device meets the same thermal and electrical ratings for the specific application context.