DB3A-AP

Overview

The DB3A-AP is a silicon bidirectional diac manufactured by Micro Commercial Components. It features an axial package and through-hole mounting configuration. The device has a breakover voltage range of 28 to 36 volts and a peak output current rating of 2 amperes. It operates within a temperature range of -40°C to 110°C junction temperature.

Feature Summary

• Silicon bidirectional construction for phase control applications
• Axial leaded package suitable for through-hole mounting
• Designed for thyristor triggering in AC circuits

Applications

• Thyristor phase control circuits
• Lamp dimming systems
• Universal motor speed control
• Heat control applications

Procurement Notes

Verify the specific manufacturer part number against official MCC documentation to ensure authenticity. Confirm that the axial package type matches the design requirements. Check datasheet specifications for breakover voltage tolerances and thermal limits before integration into final assemblies.

Selection Notes

Select this component when a bidirectional trigger device is required for AC phase control. Ensure the circuit design accommodates the 28 to 36 volt breakover threshold. Verify that the axial form factor fits the PCB layout constraints and that the operating temperature range meets environmental conditions.

Part Context

This component belongs to the DIAC family from Micro Commercial Components. It serves as a trigger device for larger thyristors or triacs in AC power control scenarios. The axial package distinguishes it from surface-mount alternatives in the same functional category.

Replacement Considerations

Consult official MCC substitution guides for verified equivalents. Generic DIAC replacements may differ in breakover voltage tolerance or peak current ratings. Verify pin compatibility and package dimensions before swapping components in existing designs.