What the 3.5 A / 600 V rating means for your BOM
The GSIB2560-E3/45: The GSIB2560-/45 is a compact single-phase bridge rectifier rated for 3.5 A average rectified output (Io) and 600 V peak reverse voltage per diode. That 600 V peak reverse rating covers the rectified DC bus in a 240 VAC offline supply with margin — the peak of a 240 VAC sine wave is 339 V, so the 600 V rating gives about 260 V of headroom for mains transients. The 3.5 A average is the continuous DC output the bridge can deliver in free-air convection at 25°C ambient; derate if the board runs hot or airflow is restricted. Forward voltage is specified at 1 V max at 12.5 A — that 12.5 A figure is the peak surge current, not the continuous rating. The bridge can handle a one-cycle surge (8.3 ms) at that level, useful for capacitor inrush on power-up. Reverse leakage is 10 µA at the 600 V blocking voltage, low enough to avoid thermal runaway in a lightly loaded supply.
Package and board-fit — GSIB-5S through-hole SIP
The GSIB-5S is a 4-pin single-in-line package with the four diode junctions inside a molded SIP body. Through-hole mounting means it stands off the board — the leads go through plated holes and are soldered on the bottom side. The 5.08 mm pitch between pins matches standard perfboard or a custom PCB layout. The package body is about 29 mm long and 6 mm wide, compact enough for a 25 W to 40 W offline power supply on a 50 mm × 30 mm board. Storage temperature range is wider; the part can sit on a reel or tube at -55°C to +150°C without damage.
Sourcing — quoted to order against RFQ
This is an active Vishay part, so it flows through authorized distribution channels. No minimum order quantity beyond the tube quantity (typically 20 pieces per tube). The tube packaging is standard for through-hole bridge rectifiers; parts ship in the original Vishay tube unless bulk packaging is requested.