600 V, 1.5 A single-phase bridge in a DFS SMD package
The DF1506S-E3/45: The DF1506S-/45: The Vishay DF1506S-/45 is a single-phase bridge rectifier that converts AC to DC in a compact surface-mount DFS package with gull-wing leads. It handles a peak reverse voltage of 600 V and delivers 1.5 A average rectified current, with a maximum forward voltage drop of 1.1 V at that rated current.
Forward drop and thermal budget at 1.5 A
At 1.5 A average output, the 1.1 V forward drop means about 1.65 W dissipation across the four diodes. In the DFS package, that heat needs a decent PCB copper area or forced airflow to keep junction temperature below 150°C. If your load pulls close to the 1.5 A limit continuously, derate the current or add a heatsink pad under the package — the datasheet's thermal resistance figures will guide the copper pour size.
Leakage and reverse recovery at 600 V
Reverse leakage is specified at 10 µA when the full 600 V peak reverse voltage is applied. That is low enough to avoid wasting power in standby or light-load conditions, but worth checking if the bridge sees sustained high-line transients — the leakage doubles with temperature, so at 125°C junction it will be higher. Standard recovery diodes like this one have a recovery time in the microsecond range, fine for 50/60 Hz mains rectification but not for high-frequency switching supplies.
Package, mounting, and compliance
It is surface-mount, so it reflows onto the board with standard solder profiles. ROHS3 compliant, with no exemptions that complicate EU or California regulatory filings. The active lifecycle status means Vishay continues to manufacture it — no last-time-buy clock ticking.