PC355N Series is a photocoupler from Sharp. It features a 4-pin mini-flat package, double protection isolation, UL 94V-0 flammability grade and more.
The PC355N Series is a photocoupler that combines an infrared LED optically coupled to a phototransistor, packaged in a 4‑pin Mini‑flat form factor. It offers a high isolation voltage of 3.75 kV rms and a minimum current transfer ratio (CTR) of 600 % at an input current of 1 mA. The device is suitable for high‑density mounting, programmable controllers, and various industrial control applications.
The datasheet lists absolute maximum ratings such as a forward current of 50 mA, power dissipation of 70 mW, and operating temperature range from –30 °C to +100 °C. Compliance information includes UL1577 recognition and UL flammability grade for the package resin. Application notes cover use in personal computers, office automation, telecommunications, test equipment, and industrial control systems.
| Package type | 4‑pin Mini‑flat |
|---|---|
| Isolation voltage (rms) | 3.75 kV |
| Minimum CTR | 600 % at 1 mA |
| Forward voltage (typ) | 1.4 V |
| Forward current (max) | 50 mA |
| Power dissipation (max) | 70 mW |
| Operating temperature range | –30 °C to +100 °C |
| Storage temperature range | –40 °C to +125 °C |
| Collector current (max) | 80 mA |
| Collector power dissipation (max) | 150 mW |
The PC355N has an isolation voltage of 3.75 kV rms.
The minimum CTR is 600 % when the input current is 1 mA.
It is supplied in a 4‑pin Mini‑flat package.