The 1N6761-1: Rated for 1 A average rectified current (Io) and 100 V DC reverse voltage (Vr max) — this covers low-to-mid power rectification in DC-DC converters, freewheeling clamps, and reverse-polarity protection circuits where the forward current stays under 1 A and the blocking voltage under 100 V. The fast recovery classification (≤500 ns, >200 mA Io) means the diode switches off quickly enough for moderate-frequency power supplies and flyback stages — the reverse recovery charge is low enough that the switching loss in a 50–100 kHz converter stays manageable without a snubber.
Supplied in the DO-204AL (DO-41) axial-lead through-hole package — the leads are formed for through-hole PCB mounting or point-to-point wiring, and the body diameter lets it sit in standard 0.100-inch pitch board layouts. The DO-41 package is widely second-sourced; if the BOM needs an alternate, the same footprint accepts standard JEDEC DO-41 diodes with matching ratings.
Reverse leakage and capacitance — switching and standby considerations
Reverse leakage current is 100 µA at 100 V — this is the standby loss in a reverse-biased blocking application; at lower reverse voltages the leakage drops proportionally, so in a 12 V rail the actual leakage is well under 10 µA. Junction capacitance is 70 pF at 5 V reverse bias and 1 MHz — a low enough capacitance that the diode does not load the switching node significantly in a 100 kHz converter; the capacitive switching loss at turn-on stays in the milliwatt range.