36 V Zener, active production
The 1N6013D: The ±1% tolerance on the Zener voltage makes it a candidate for reference or clamp circuits where a standard ±5% part would drift too far. Reverse leakage is specified at 100 nA max at 27 V — low enough that it will not load a high-impedance bias node.
DO-35 axial — field-swappable
DO-35 (DO-204AH) axial leaded package, through-hole mount. The body is small enough to fit into tight point-to-point wiring or a crowded perfboard, and the leads are long enough to form into a strain-relief loop before soldering. No special orientation tricks — the cathode band is the only mark you need to read. Operating from -65 °C to 175 °C, this diode spans the full military temperature range. That 175 °C ceiling is the junction temperature, not the ambient — in a 125 °C ambient with natural convection, the 500 mW dissipation limit drops, so leave thermal margin.
Supplied in Bulk packaging (loose parts in a bag or tube), not tape-and-reel. If your pick-and-place expects reels, you will need to hand-load or transfer to a carrier — plan the kitting step.