Schottky pair in SOT-23 — 30 V, 200 mA per leg
The BAT5405E6327HTSA1 is a dual Schottky diode in a common-cathode configuration, housed in the PG-SOT23 package.
What the key ratings mean for your BOM
At 200 mA forward current the forward voltage drop is 800 mV max; that conduction loss at full load is about 160 mW per diode, well within the SOT-23's thermal budget when the junction is kept under 150 °C. The 5 ns reverse recovery time (trr) is the headline for high-frequency rectification — in a 500 kHz boost converter the diode's recovery charge is negligible, so switching losses stay low. The common-cathode pair shares the same cathode terminal, which simplifies PCB layout for dual rectifier stages or polarity protection where both anodes connect to separate inputs.
The PG-SOT23 (TO-236-3, SC-59) footprint is industry-standard — the 0.95 mm pitch and 1.3 mm body width fit a two-layer board without micro-vias. The surface-mount package is rated for 150 °C maximum junction temperature, so the part can sit near a hot regulator or inductor as long as the ambient plus self-heating stays under that ceiling. Tape-and-reel packaging (7-inch reel, 3000 pieces) is the standard procurement unit for pick-and-place assembly.