The PC817X3CSZ9F with Transistor Output Optocouplers Photocoupler from Sharp is an electronic part providing electrical isolation between different parts of a circuit which enables them to communicate without electrical interference. The Photocoupler contains a non-contact optically isolated photo IC and a four-channel phototransistor. It has a working voltage of 5.0 to 24V between each channel, an isolation voltage of 3750 Vrms, a collector-emitter voltage of 30V, and a maximum current of 100mA. This part is used for isolating and transferring digital signals for automotive applications, such as safety cameras, door locks, and lighting control systems.