A222 PC817C Optocoupler - High Voltage Phototransistor Photocupler (SMD-4)

The PC817C is a popular 4-pin optocoupler consisting of an Infrared Emitting Diode (IRED) optically coupled to a phototransistor. It provides 5kV isolation, making it essential for feedback loops in switching power supplies (SMPS) and protecting delicate control circuitry in professional audio mixers and amplifiers.

Technical Specifications

• Type: Phototransistor Output Optocoupler

• Current Transfer Ratio (CTR): 200% to 400% (C-Grade classification)

• Isolation Voltage: 5,000 Vrms (High safety margin)

• Collector-Emitter Voltage ($V_{CEO}$): 80V (Max)

• Forward Current ($I_F$): 50mA

• Package: 4-Pin SMD (Gull-wing leads)

Key Applications for slvsales.in Customers

• Switching Power Supplies: Used in the feedback circuit of amplifier power modules to maintain stable voltage.

• Ground Loop Isolation: Prevents noise and hum in audio signals by electrically isolating different sections of a circuit.

• System Protection: Acts as a safety barrier between high-power stages and sensitive microcontrollers/DSP chips in digital mixers.

🚚 Fast & Reliable Delivery Across India

We strive to ensure a smooth and quick delivery experience for all our customers.

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  Same-Day Dispatch: All orders are usually dispatched on the same day, with daily cut-off around 4:00 PM IST.
  
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  Delivery Time: You can expect your order to reach you within 4–5 working days, depending on your location.
  
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  Pan India Shipping: We deliver across all cities and villages in India, so no matter where you are, we’ve got you covered.
  
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  Trusted Courier Partners: Your orders are shipped through reliable logistics partners like DTDC and Delhivery to ensure safe and timely delivery.
  

💡 Whether it’s a metro city or a remote village, you don’t need to worry — we make sure your order reaches you securely.

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