PC3SD21NXZCF

Triac, SCR Output Optoisolators Overview

The PC3SD21NXZCF is a single-channel Triac and SCR output optocoupler manufactured by Sharp Microelectronics. It features a PhotoTriac output with an integrated zero-crossing circuit, designed for low-noise AC switching applications. The device utilizes a surface-mount 6-SMD (Gull Wing) package and provides high isolation capability of 5000 Vrms between input and output circuits. Key electrical specifications include a maximum repetitive peak off-state voltage (VDRM) of 800 V, a continuous RMS on-state current (ItRMS) of 100 mA, and a maximum forward current (If) of 50 mA. The unit operates within a temperature range of -30°C to +100°C.

Triac, SCR Output Optoisolators Feature Summary

• Integrated zero-crossing detection circuitry minimizes electromagnetic interference during AC load switching.
• High isolation voltage rating ensures safe separation between control and power circuits.
• Surface-mount packaging facilitates automated assembly and compact board design.

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 matches the required zero-crossing variant and package type. Check for recent product change notifications regarding manufacturing updates. Ensure storage conditions comply with moisture sensitivity level requirements before soldering.

Triac, SCR Output Optoisolators Selection Notes

Select this component when zero-crossing switching is required to reduce electrical noise in AC systems. Compare the 800 V blocking voltage against line voltage peaks. Verify that the 100 mA output current meets the gate drive requirements of the connected triac or SCR. Consider the SMD footprint constraints relative to available PCB space.

Triac, SCR Output Optoisolators Part Context

This part belongs to Sharp's PC3SD series of phototriac couplers. The series includes variants with and without zero-crossing circuits, such as the PC3SD11 and PC3SF11 models. The PC3SD21NXZCF specifically denotes the surface-mount version with zero-crossing functionality, distinguishing it from through-hole alternatives like the PC3SD21NTZAF.

Triac, SCR Output Optoisolators Replacement Considerations

Direct substitutes may include other Sharp PC3SD21 variants with matching zero-crossing features. Cross-reference pinouts and thermal characteristics when considering non-Sharp equivalents. Verify that alternative components meet the same 5000 Vrms isolation and 800 V blocking voltage standards.