The ISP817 is a transistor output optoisolator that is commonly used in electronic circuits for signal isolation and noise suppression. It features a 1.2V forward voltage and a maximum forward current of 50mA. The rise and fall time is typically 3µs and 4µs respectively, ensuring fast switching speeds. With a voltage isolation of 5300Vrms, it provides excellent protection against high voltages. The current transfer ratio is 50% @ 5mA and can reach up to 600% @ 5mA, allowing for efficient signal amplification. The Vce saturation is maximum 200mV, ensuring low power dissipation. The ISP817 is a through-hole component with a 4-DIP package, making it easy to mount on a PCB. It operates within a wide temperature range of -55°C to 110°C, making it suitable for various applications. This optoisolator is manufactured by Isocom Components 2004 LTD, a trusted supplier in the industry.