PC817C, Phototransistor Optocoupler IC, DIP-4 Package Type

The PC817C is a single‑channel optocoupler comprising an infrared emitting diode (IRED) optically coupled to a phototransistor, housed in a compact 4‑pin DIP package. This device enables signal transmission between circuits of differing voltage or impedance while providing high isolation between input and output. With an input‑output isolation voltage up to 5 000 Vrms, the PC817C is ideal for use in microcontroller interfaces, system appliances, instrumentation, telecommunication equipment, and motor‑control systems. Its design supports high collector‑emitter voltage (up to 80 V in current variants) and a wide current transfer ratio (CTR) range, making it suitable for a broad range of applications. The device is manufactured using double‑transfer molding and meets UL flammability grade 94V‑0. The PC817C is RoHS‑compliant and approved under UL 1577 (file No. E64380), offering reliable isolation and signal integrity in demanding environments.

Key Features:

• Input‑output isolation voltage (Viso) of 5 000 Vrms typical.
• High collector‑emitter voltage rating (VCEO) up to 80 V for more robust output stage.
• Wide current transfer ratio (CTR) – for the “C” grade: approx. 200%‑400% at IF = 5 mA, VCE = 5 V.
• Compact 4‑pin DIP package, through‑hole mounting for easy PCB integration.
• Double‑transfer molded construction with UL flammability grade 94V‑0 resin.
• Suitable for signal isolation between circuits of different potentials and impedances such as microcontrollers to high‑voltage outputs.

Additional Specifications:

• Package Type: 4‑Pin DIP
• IC type: Optocoupler / Photocoupler (LED emitter + phototransistor detector)
• Mounting Style: Through‑Hole (THT)