The CA1A-12V-C-5 is a sealed 1 Form A automotive power relay manufactured by Panasonic EW/AROMAT, designed for compact switching applications in motorcycles, automobiles, and battery-equipped devices. It features a 12 VDC nominal coil voltage with a nominal switching capacity of 20 A at 12 VDC resistive load, a maximum carrying current of 20 A continuous at 14 VDC and 80 °C, and operates with a nominal power consumption of 1.4 W. The relay exhibits a contact resistance of 3 mO typical (measured at 6 VDC, 1 A), a maximum contact voltage drop of 0.3 V after electrical life testing, and is constructed with cadmium-free silver alloy contacts sealed with epoxy resin. It delivers a maximum operate time of 10 ms and release time of 10 ms at nominal voltage, with an insulation resistance of 10 MO minimum at 500 VDC and a breakdown voltage of 500 Vrms for 1 minute. The relay is rated for -30 °C to +80 °C ambient temperature, withstands functional shock of 200 m/s² (20 G) and destructive shock of 1,000 m/s² (100 G), and achieves a minimum electrical life of 105 operations at nominal switching capacity. With direct coupling mounting, compact dimensions of 21.5 mm × 14.4 mm × 37 mm, and a mass of 19 g, it is ideal for space-constrained automotive applications including motor control, air conditioning systems, and halogen lamp switching.