The Optosupply OSR5212411C-TR7 is a high-speed optocoupler IC with a 1-channel, board-mounted transistor output. It is a 5 mm pitch, 4-pin THD package with a 1,000 Vrms withstand voltage and a frequency response of 1 kHz. It has excellent current transfer ratio (CTR) with a minimum of 50% and a maximum of 600%. The typical current transfer ratio at 16 mA LED current is 400%. The OSR5212411C-TR7 is suitable for use in invertor circuits, temperature control, communication interface, and industrial control applications.