The BU2010-E3/51: The Vishay BU2010-/51 is a single-phase standard silicon bridge rectifier in the isoCINK+™ BU package, delivering 1 kV peak reverse voltage (PIV) and 3.5 A average rectified output current (Io). The 1 kV PIV means this bridge handles 240 VAC mains with a 1.4× peak factor plus margin for line transients — common in off-line power supplies and AC-DC front ends where the rectifier sees the full peak of the sine wave. The 3.5 A average rating, at a 1.05 V forward drop at 10 A surge, keeps conduction losses under 3.7 W in continuous duty, which the isoCINK+ package can dissipate with basic airflow or a heatsink tab.
isoCINK+ BU — through-hole package and board integration
The 4-SIP BU package (isoCINK+™) is a through-hole, single-in-line footprint with four leads — two for the AC input, two for the DC output. Supplied in Bulk (tube or tray), the package suits hand-insertion or wave-solder assembly on standard 2.54 mm pitch boards. The through-hole leads provide mechanical robustness in high-vibration environments compared to surface-mount bridges of similar rating. Reverse leakage is specified at 5 µA at 1000 V reverse — a low figure that confirms the die passivation and junction termination are clean, important for high-impedance loads where leakage current can upset bias networks.
Active production and compliance
Manufactured by Vishay, a Tier-1 discrete semiconductor house, the part carries the full datasheet with SOA curves, thermal impedance, and surge ratings. The suffix denotes RoHS-compliant lead-free plating on the leads.