PC4SD21NTZD

Triac, SCR Output Optoisolators Overview

The PC4SD21NTZD is a single-channel Triac output optocoupler manufactured by Sharp Microelectronics. It features an internal zero-crossing detection circuit for low electromagnetic interference switching. The device provides 5000 Vrms isolation voltage and supports an 800 V blocking voltage. Key electrical parameters include a maximum forward current of 50 mA, a peak on-state current of 100 mA, and a maximum trigger current of 3 mA. It operates within a temperature range of -30°C to 100°C and utilizes a 6-DIP through-hole package.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for noise-immune AC load control
• High isolation capability with 5000 Vrms dielectric strength
• Robust static dv/dt rating ensures reliable operation in high-noise environments

Triac, SCR Output Optoisolators Applications

• Solid-state relays for AC power switching
• Motor control circuits requiring galvanic isolation
• Industrial automation systems with AC load interfaces

Triac, SCR Output Optoisolators Procurement Notes

Verify component authenticity as the PC4SD21NTZD is listed as obsolete. Confirm specific suffix variations against original datasheets to ensure pinout and electrical characteristics match design requirements before integration into new hardware.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is mandatory to minimize electrical noise. Ensure the application voltage does not exceed the 800 V blocking limit. Consider the 3 mA trigger current requirement for LED drive circuit design to guarantee reliable turn-on under all operating conditions.

Triac, SCR Output Optoisolators Part Context

This part belongs to the PC4SD series of Triac output optocouplers designed for AC power control applications. The series emphasizes safety isolation and noise reduction through integrated zero-crossing technology, suitable for replacing mechanical relays in solid-state switching scenarios.

Triac, SCR Output Optoisolators Replacement Considerations

PC4SD21NXZCF is a surface-mount variant within the same functional family offering identical electrical specifications and zero-crossing capabilities.