CQ220-25D

Triacs Overview

The Central Semiconductor CQ220-25D is a silicon TRIAC in a TO-220 package designed for full-wave AC control. It features gate triggering in all four quadrants and supports a peak repetitive off-state voltage of 400 V. The device handles an RMS on-state current of 25 A at 90°C case temperature, with a one-cycle surge capability of 150 A. Key electrical parameters include a maximum holding current of 50 mA, a typical gate trigger current of 30 mA in Quadrants I, II, and III, and a junction temperature range from -40°C to +125°C.

Triacs Feature Summary

• Four-quadrant gate triggering capability for versatile AC load control
• High thermal stability with a junction temperature rating up to +125°C
• Robust surge handling with a 150 A non-repetitive peak current capacity

Triacs Applications

• Full-wave AC control applications
• Inductive and resistive load switching
• Solid-state relay circuits

Triacs Procurement Notes

This component has been officially transitioned to End of Life status by the manufacturer. Last purchase orders must be placed within six months of the notice date, with final shipments occurring twelve months after the announcement. No replacement part number is currently designated for this specific model, requiring verification of alternative sourcing strategies.

Triacs Selection Notes

Designers should verify that the required blocking voltage meets or exceeds the circuit's peak repetitive off-state voltage of 400 V. Ensure the thermal management system maintains the case temperature below 90°C to sustain the rated 25 A RMS current. Consider the 150 A surge limit when selecting protective fusing for the application.

Triacs Part Context

The CQ220-25D belongs to the CQ220 series of epoxy-molded silicon TRIACs manufactured by Central Semiconductor Corp. This series shares common mechanical dimensions and thermal characteristics across different voltage ratings, ranging from 200 V to 800 V, while maintaining a consistent 25 A current handling capability in the TO-220 case style.

Triacs Replacement Considerations

No direct replacement part number is listed for the CQ220-25D in the official discontinuation notice. Engineers must evaluate alternative TRIACs with similar 400 V blocking voltage, 25 A RMS current, and TO-220 packaging constraints.