80 V 3 A Schottky in a hermetic SQ-MELF
The 1N6864US from Microchip Technology is a Schottky rectifier rated for 80 V reverse voltage and 3 A average forward current, with a maximum forward voltage of 700 mV at 3 A. It is classified as a fast recovery device (≤ 500 ns, > 200 mA Io), which for a Schottky is the standard recovery speed — the Schottky barrier itself switches fast, and this rating confirms it meets the general-purpose fast-recovery spec for circuits that need low reverse recovery charge. The SQ-MELF B package is a hermetic, surface-mount ceramic barrel — it handles the thermal cycle of military and aerospace boards well, and the metalized ends make for a straightforward reflow or hand-solder operation if you have a steady iron and the right tip.
Junction temperature and leakage profile
The junction operates from -65°C to 125°C, covering the full military temperature range — this part is at home in avionics, satellite, or downhole equipment where the ambient swings wide. Reverse leakage is specified at 150 µA at 80 V — typical for a 3 A Schottky at its maximum rated voltage, but expect leakage to climb with junction temperature; keep the thermal path clean if you are running near the 125°C limit.