PC4SD21NTZCH

Triac, SCR Output Optoisolators Overview

The PC4SD21NTZCH is a zero-crossing phototriac coupler manufactured by Sharp Microelectronics. It features a single channel with an isolation voltage of 5000 Vrms and an off-state voltage rating of 800 V. The device includes an integrated zero-crossing circuit for low EMI triggering. Key electrical parameters include a maximum static dv/dt of 500 V/µs, a maximum trigger current of 3 mA, and a maximum holding current of 3.5 mA. It operates within a temperature range of -30°C to 100°C and is housed in a 6-DIP package.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for minimized electromagnetic interference during switching
• High isolation capability rated at 5000 Vrms for safe signal transmission between circuits
• Robust off-state voltage handling up to 800 V for reliable AC load control applications

Triac, SCR Output Optoisolators Applications

• Solid-state relay (SSR) input stages
• AC motor speed control circuits
• Lighting dimmer switch modules

Triac, SCR Output Optoisolators Procurement Notes

Verify component status as the PC4SD21NTZCH is listed as discontinued by major distributors such as DigiKey. Confirm availability through alternative channels or authorized secondary markets if immediate procurement is required. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing supply chain decisions.

Triac, SCR Output Optoisolators Selection Notes

Select this component for applications requiring precise zero-crossing synchronization to reduce electrical noise. The 6-DIP package facilitates through-hole mounting. Consider the 800 V blocking voltage when designing for high-voltage AC lines. Verify that the 3 mA trigger current aligns with the driving circuit's output capabilities.

Triac, SCR Output Optoisolators Part Context

This part belongs to Sharp’s family of phototriac couplers designed for AC power control. The 'SD' suffix typically denotes the zero-crossing variant. It serves as an interface between low-voltage logic circuits and high-voltage AC loads, providing galvanic isolation while ensuring synchronized switching events.

Triac, SCR Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the discontinued status, engineering teams should evaluate equivalent zero-crossing triac optocouplers from other manufacturers, ensuring matching isolation voltage, package type, and trigger current specifications.