The SONG CHUAN part 303-1AH-C-12VDC is an electromechanical relay specifically designed for automotive applications. With a voltage rating of 12VDC and a coil resistance of 150Ohm, this relay is capable of handling a maximum current of 20A. The SPST-NO (Single Pole Single Throw - Normally Open) configuration ensures a reliable connection when the relay is activated. This compact relay measures 16x15x23.7mm and can be easily mounted onto through-hole technology (THT) PCBs. With its high-quality construction and automotive-grade reliability, this SONG CHUAN relay is an excellent choice for various automotive electrical systems.