CQD-4M BK

Triacs Overview

The Central Semiconductor CQD-4M is a surface mount silicon TRIAC designed for full wave AC control applications. It features gate triggering in all four quadrants and is housed in a DPAK package. The device supports a peak repetitive off-state voltage of 600 V and an RMS on-state current of 4.0 A at 80°C case temperature. Electrical characteristics include a maximum gate trigger voltage of 1.75 V and a holding current of up to 5.0 mA. The component operates within a junction temperature range of -40°C to +125°C.

Triacs Feature Summary

• Four-quadrant gate triggering capability for reliable switching across all AC polarity combinations
• Epoxy molded construction suitable for full wave AC control applications
• Surface mount DPAK packaging for automated assembly integration

Triacs Applications

• Full wave AC control circuits
• Solid state relay inputs
• Lighting dimmer modules

Triacs Procurement Notes

This component has been transitioned to End of Life status by the manufacturer. Availability is restricted to existing stock only, with no new production scheduled. Buyers should verify current inventory levels with authorized distributors immediately. Last purchase orders are subject to specific cutoff dates defined in the discontinuation notice. Final shipments may occur up to twelve months from the official notice date, depending on remaining supply.

Triacs Selection Notes

Engineers must account for the discontinued status when designing new systems. The CQD-4N variant offers identical electrical performance but provides an 800 V off-state voltage rating instead of 600 V. Designers requiring long-term supply stability should evaluate alternative surface mount TRIACs from other manufacturers that offer active production lifecycles and guaranteed availability windows.

Triacs Part Context

The CQD-4M belongs to a family of surface mount silicon TRIACs manufactured by Central Semiconductor Corp. These devices utilize a DPAK case style and are engineered for compact AC power switching designs. The product line includes variants with different voltage ratings, such as the CQD-4N, which shares the same current handling and package dimensions while offering higher voltage blocking capabilities.

Triacs Replacement Considerations

No direct replacement part numbers are listed by the manufacturer. The company advises contacting [email protected] for assistance in locating alternate sources or equivalent components from other suppliers.