Device identity and key ratings
The GBPC608-E4/51: The Vishay GBPC608-/51 is a single-phase bridge rectifier in the standard GBPC6 through-hole package, rated for 800 V peak reverse voltage and 3 A average rectified output current. Forward voltage drops to 1 V max at 3 A, and reverse leakage is 5 µA at rated voltage — the numbers you need for thermal and standby-loss budgeting in a power supply or DC bus.
Temperature grade and field fit
The GBPC-6 package is a 4-square through-hole footprint with screw-mount or solder-in terminals — easy to swap on site with basic tools, no hot-air station needed.