Specifications: The APY221R2S is optimized for high-speed, moderate-current switching. Rated for 250mA at 60V (AC/DC) in SOP-4, it has a low 1.5Ω on-resistance and 2500Vrms isolation. It stands out with its fast 50μs turn-on and 40μs turn-off times. The device is designed for reliable operation from -40°C to 85°C, controlled by 1.2-1.4VDC.

Application Scenarios: Its speed makes it ideal for data acquisition and communication. It is used in multiplexing analog signals in data loggers, switching RF paths in antenna tuning units, providing fast overcurrent crowbar protection in low-voltage supplies, and as a high-speed digital isolator for SPI or I2C lines in noisy industrial environments.