PC3SD21NTZD

Triac, SCR Output Optoisolators Overview

The PC3SD21NTZD is a single-channel photo-triac optocoupler manufactured by Sharp Microelectronics. It features an integrated zero-crossing detection circuit for low electromagnetic interference switching. The device provides 5000 Vrms isolation voltage between input and output. Key electrical parameters include a maximum repetitive peak off-state voltage of 800 V, a maximum RMS on-state current of 100 mA, and a maximum trigger current of 3 mA. The turn-on time is specified at a maximum of 50 µs. It operates within a temperature range of -30°C to +100°C and is housed in a 6-DIP package with 7.62 mm lead spacing.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry for reduced noise generation during AC load switching
• High isolation capability with 5000 Vrms dielectric strength between input and output circuits
• Photo-triac output designed for direct control of small AC loads without external triacs

Triac, SCR Output Optoisolators Applications

• Solid-state relays for AC load control
• Motor speed controllers
• Lighting dimmer circuits

Triac, SCR Output Optoisolators Procurement Notes

Verify component authenticity through authorized Sharp Microelectronics distributors or certified partners. Confirm the specific suffix NTZD matches required packaging and compliance standards. Check current production status as availability may vary. Ensure storage conditions adhere to moisture sensitivity levels if applicable. Validate pinout compatibility with existing PCB footprints before integration.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to minimize electrical noise in AC applications. Compare trigger current specifications against driving logic levels to ensure reliable activation. Verify that the 800 V blocking voltage exceeds the peak line voltage of the target application. Consider the 100 mA current rating for load capacity requirements. Evaluate thermal management needs based on the operating temperature range.

Triac, SCR Output Optoisolators Part Context

This part belongs to Sharp's PC3SD series of phototriac optocouplers. The series is characterized by high isolation voltages and integrated control circuits. The PC3SD21 variant specifically includes zero-crossing detection. This family is commonly used in industrial automation and consumer electronics for safe isolation between low-voltage control logic and high-voltage AC power stages.

Triac, SCR Output Optoisolators Replacement Considerations

PC3SD21NTZAH: Similar DIP-6 package with zero-crossing functionality. PC3SD21NTZDH: Alternative packaging option within the same functional family. Verify pinout and electrical parameters match before substitution.