250 V blocking in a DO-35 body — what it buys you
The 1SS88-E is a small-signal switching diode rated for 250 V reverse voltage (Vr) and 200 mA average rectified current (Io), housed in a DO-35 axial-lead package. The 100 ns reverse recovery time (trr) and 1.5 pF junction capacitance at 0 V bias make it suitable for high-voltage low-current rectification, snubbing, or detector circuits where a fast turn-off and minimal capacitive loading are needed.
Parametric fit — what each rating decides
The 250 V reverse voltage ceiling covers 240 VAC line rectification with margin, but the 200 mA forward current limit means this is a signal-path diode, not a bulk power rectifier. The 100 ns trr keeps switching losses low in flyback or boost converters running below 100 kHz. Junction capacitance of 1.5 pF at 0 V bias is low enough for RF detector or high-speed logic clamping without loading the signal. Reverse leakage is 200 nA at 250 V, so standby power in a high-impedance node stays negligible.
Package and mounting — DO-35 through-hole
The DO-35 (DO-204AH) axial-lead package is a through-hole form factor. The leads are solderable into standard 0.025-inch diameter plated-through holes. No special footprint beyond the standard axial-lead layout is needed.
It is ROHS3 compliant.