The HMHA2801AR2 is an isolator transistor produced by Fairchild/ON Semiconductor. It features a minimum DC current transfer ratio of 80% at 5mA and a maximum DC current transfer ratio of 160% at 5mA. The device also has a Vce saturation (max) of 300mV, an isolation voltage of 3750Vrms, and a maximum output voltage of 80V. It can handle a continuous forward current of up to 50mA and is suitable for use in industrial applications. The supply and demand status for this product is balanced, and it comes in a reel of 2,500 units.