PC817XI

Transistor, Photovoltaic Output Optoisolators Overview

The PC817XI is a single-channel transistor output optocoupler manufactured by Sharp Microelectronics. It features an infrared emitting diode optically coupled to an NPN phototransistor in a surface-mount SMD-4 package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage (VCEO) of 80 V, a maximum forward current (If) of 50 mA, and a typical forward voltage (Vf) of 1.4 V. The current transfer ratio ranges from 50% to 600%, with rise and fall times typically around 18 µs. It operates within a temperature range of -30°C to +100°C and has a power dissipation rating of 200 mW.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High isolation voltage capability of 5000 Vrms for safe electrical separation
• Double transfer mold package construction suitable for flow soldering processes
• High collector-emitter voltage rating of 80 V for robust switching applications

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in industrial control systems
• Feedback loop isolation in switching power supplies
• Digital signal transmission between microcontrollers and high-voltage circuits

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official Sharp documentation to confirm pinout compatibility and packaging type. Ensure the selected variant matches the required current transfer ratio grade for your circuit design. Confirm RoHS compliance status through the manufacturer's latest product declaration before finalizing procurement specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a compact surface-mount solution is required for galvanic isolation. Consider the 80 V collector-emitter voltage limit for load switching requirements. Evaluate the CTR range to ensure adequate drive capability for the connected load at the intended operating current levels.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the PC817 family of optocouplers, widely used for general-purpose isolation. The XI suffix typically denotes a specific surface-mount package configuration compared to the standard DIP variants. It serves as a common replacement for legacy through-hole designs in modern PCB layouts requiring space efficiency.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes include LTV-817, EL817, and TLP521-1. Verify pinout alignment and electrical parameter equivalence before substitution.