PC3ST21NSZCF

Triac, SCR Output Optoisolators Overview

The PC3ST21NSZCF is a Triac output optoisolator manufactured by Sharp Microelectronics. It features a 4-DIP package with a 0.300-inch (7.62mm) width. The device provides 5000 Vrms isolation voltage between input and output circuits. It integrates a zero-crossing detection circuit to minimize electromagnetic interference during switching. The component is designed for AC load control applications requiring reliable galvanic isolation.

Triac, SCR Output Optoisolators Feature Summary

• Integrates zero-crossing detection circuitry for low-noise AC switching
• Provides high-voltage electrical isolation via 5000 Vrms insulation
• Utilizes a PhotoTriac output stage for direct AC load driving

Triac, SCR Output Optoisolators Applications

• Solid-state relay modules
• AC motor speed controllers
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify the specific suffix NSZCF against current Sharp Microelectronics documentation to confirm pinout and packaging dimensions. Confirm RoHS compliance status through official datasheets as manufacturing processes may evolve. Check for active production status or end-of-life notices before finalizing design-in decisions.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to reduce electrical noise in AC power control systems. Ensure the 5000 Vrms isolation rating meets the safety requirements of the target application. Verify that the DIP-4 package footprint aligns with the printed circuit board layout constraints.

Triac, SCR Output Optoisolators Part Context

This part belongs to the PC3ST series of Triac output optocouplers from Sharp Microelectronics. The series is characterized by integrated zero-crossing circuits, distinguishing it from non-zero-crossing variants like the PC3SF series. It serves as a standard interface component for isolating low-voltage control logic from mains-powered AC loads.

Triac, SCR Output Optoisolators FAQ

Does the PC3ST21NSZCF include a zero-crossing circuit?

Yes, the device includes an integrated zero-crossing detection circuit to ensure switching occurs near the AC voltage zero point.

What is the isolation voltage rating?

The component offers an isolation voltage of 5000 Vrms between the input LED and the output Triac.