PC4SD21NXZCF

Triac, SCR Output Optoisolators Overview

The PC4SD21NXZCF is a single-channel optoisolator manufactured by Sharp Microelectronics, featuring a Triac output. It provides an isolation voltage of 5000 Vrms and supports a peak repetitive off-state voltage (VDRM) of 800 V. The device incorporates a zero-crossing circuit to minimize electromagnetic interference during switching. Key electrical parameters include a maximum forward current (If) of 50 mA, a typical forward voltage (Vf) of 1.2 V, and a maximum trigger current (Ift) of 5 mA. The Triac can handle a maximum RMS on-state current of 100 mA with a holding current of 3.5 mA. Switching characteristics include a maximum turn-on time of 50 µs and a minimum static dv/dt rating of 500 V/µs. The component operates within a temperature range of -30°C to +100°C.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuit for low-noise AC power control applications
• High isolation capability rated at 5000 Vrms for safety-critical separation
• Surface-mount 6-SMD package design for automated PCB assembly

Triac, SCR Output Optoisolators Applications

• Solid-state relays for AC load switching
• Motor control circuits requiring galvanic isolation
• Industrial automation systems with high-voltage isolation needs

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix NXZCF to confirm the surface-mount 6-SMD package configuration, as other suffixes may indicate through-hole variants. Confirm availability status as distribution data indicates this part may be discontinued or subject to limited supply constraints. Ensure compliance with RoHS directives if required by the target application environment.

Triac, SCR Output Optoisolators Selection Notes

Select this component when a surface-mount solution is required for AC triac driving applications. The integrated zero-crossing feature distinguishes it from non-zero-crossing variants like the PC4SD11 series, making it suitable for noise-sensitive environments. Verify that the 800 V blocking voltage meets the peak line voltage requirements of the specific AC circuit being controlled.

Triac, SCR Output Optoisolators Part Context

This device belongs to the PC4SD21NTZ series of Triac output optocouplers produced by Sharp Microelectronics. The series is designed for general-purpose AC power control applications where electrical isolation between control logic and high-voltage AC lines is necessary. The PC4SD21NXZCF specifically denotes the surface-mount version of this family member.

Triac, SCR Output Optoisolators Replacement Considerations

PC4SD21NTZD: Through-hole DIP-6 equivalent with identical electrical specifications and zero-crossing functionality.

Triac, SCR Output Optoisolators FAQ

Does the PC4SD21NXZCF include a zero-crossing circuit?

Yes, the datasheet specifications confirm that this model includes an integrated zero-crossing circuit.

What is the maximum operating temperature for this optoisolator?

The specified maximum operating temperature is +100°C.