The HMHA2801CR1 is a transistor output optocoupler manufactured by Fairchild/ON Semiconductor. It is a single-channel isolator with a minimum DC current transfer ratio of 200% at 5mA and a maximum DC current transfer ratio of 400% at 5mA. The device has an isolation voltage of 3750Vrms and a maximum output voltage of 80V. It has a forward voltage of 1.3V (max) and a Vce saturation (max) of 300mV. The device is packaged in a 4-Mini-Flat case and has a switching turn-on and turn-off time of - microseconds. The HMHA2801CR1 is ideal for use in applications where electrical isolation is required, such as in power supplies, motor controls, and industrial systems.