What this bridge rectifier is for
The GBL02-E3/51: The Vishay GBL02-/51 is a single-phase bridge rectifier in a through-hole GBL package — it converts AC to DC in power supplies, battery chargers, and motor-drive front ends where 200 V peak reverse and 3 A average output are enough. Rated for 200 V peak reverse voltage (Vrrm) and 3 A average rectified current (Io), it handles the typical rectification stage of a 120 VAC or low-end 240 VAC input supply.
Package and board-fit for hand-soldering
The 4-SIP GBL package is through-hole with a 5.08 mm pin pitch — easy to hand-solder on perfboard or a custom PCB, no hot-air or reflow oven needed. The GBL footprint is common across Vishay's GBL-series rectifiers, so swapping to a higher-current sibling (like the 6 A GBL06) is a drop-in replacement on the same board layout.
Forward voltage and thermal margin
Maximum forward voltage is 1.1 V at 4 A — at the rated 3 A average the drop is lower, keeping conduction losses under 3.3 W and the junction well within the 150°C limit in still air.