Specifications: The APV278WE is a high-voltage, Silicon Carbide (SiC) based PhotoMOS solid-state relay in a WDIP-4 (Wide DIP) package. It is a 1 Form A (SPST-NO) device designed for ultra-high voltage, low-current switching, rated for 30mA at 1800V AC/DC. It features a 200惟 on-state resistance, provides 5000Vrms of robust isolation, and offers fast 80渭s/50渭s switching. Operating from -40掳C to 85掳C, it is controlled by a 1.33-1.5VDC input. Application Scenarios: This SiC relay is engineered for extreme high-voltage isolation applications requiring reliability and performance. It is ideal for medical imaging systems (CT/PET scanners), high-voltage power supplies, industrial test and measurement equipment for dielectric strength testing, X-ray generator control, and scientific instrumentation. The WDIP-4 package offers a wider pin spacing, enhancing creepage and clearance for improved high-voltage safety in through-hole designs.