100 V, 30 A Schottky — the high-current blocking diode for power rails
It is designed for high-current power conversion — think output rectification in switch-mode supplies, freewheeling diodes in motor drives, and reverse-polarity protection on 48 V or 72 V bus rails where the 30 A continuous rating covers the load without paralleling.
Forward drop and thermal budget at 30 A
At 30 A the forward voltage is 870 mV max — that is the conduction loss floor. At 30 A continuous, the dissipation is 26.1 W, which demands a heatsink sized for the junction-to-case thermal path. The junction temperature ceiling is 150 °C, so the heatsink must keep the case temperature low enough to stay within the SOA at the ambient of the enclosure.
Fast recovery — why it matters in switching circuits
The fast recovery spec (≤ 500 ns above 200 mA) means the diode switches off quickly when the voltage reverses — reverse recovery charge is low, which reduces switching losses and ringing in a hard-switched converter. For a 30 A Schottky, the recovery time is inherently short because there is no minority-carrier storage; the ≤ 500 ns figure confirms it behaves as a majority-carrier device across the full current range.