PC817C SMD-4

Transistor, Photovoltaic Output Optoisolators Overview

The PC817C SMD-4 is a surface-mount transistor output optocoupler manufactured by Shenzhen Slkormicro Semicon Co., Ltd. It integrates an infrared emitting diode and an NPN phototransistor within a compact SOP-4 package. This configuration provides electrical isolation between input and output circuits while transmitting digital signals. The component is designed for applications requiring reliable signal transmission across isolated boundaries, offering a standard footprint compatible with automated assembly processes.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates an infrared LED emitter with an NPN phototransistor for signal coupling
• Provides galvanic isolation between input control and output load circuits
• Utilizes a compact SOP-4 surface-mount package for space-efficient PCB layout

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Switching interfaces in power supply circuits
• Digital communication channels requiring electrical separation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the manufacturer designation on the component marking to confirm origin from Shenzhen Slkormicro Semicon Co., Ltd. Ensure the ordering suffix matches the specific tape-and-reel or bulk packaging requirements for your assembly line. Cross-reference the datasheet specifications against your circuit design constraints before finalizing procurement orders.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a standard transistor-output optocoupler is required in a surface-mount format. Confirm that the C-grade current transfer ratio meets your logic level switching thresholds. Verify that the SOP-4 package dimensions align with your board's silkscreen and copper pad designs to ensure proper soldering and mechanical stability.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the widely used 817 series of optocouplers, which are industry standards for basic isolation tasks. The PC817 variant specifically denotes the transistor output type. The SMD-4 designation indicates the surface-mount DIP-4 equivalent package, facilitating modern automated manufacturing while maintaining compatibility with legacy through-hole designs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include EL817C, FL817C, and CT817C. These parts share identical pinouts and functional characteristics. Verify that the substitute manufacturer guarantees equivalent isolation voltage ratings and current transfer ratios before implementation.