The AQY221N2SZ is a low-capacitance (C type) PhotoMOS relay designed for high-speed switching applications. It operates with a 40V load voltage and a 120mA continuous load current, featuring a very low output capacitance of 1.0 pF and a typical on-resistance of 9.5Ω. This relay offers high-speed switching with typical turn-on and turn-off times of 0.03ms and maintains a low off-state leakage current of just 0.01nA. Its characteristics make it suitable for use in measuring and testing equipment, telecommunication systems, and medical devices.