12 V regulation with tight ±1% tolerance
The 1N6002D is a 12 V Zener diode from Microchip Technology, specified with a ±1% tolerance on the nominal voltage — tight enough for a precision reference or a shunt regulator where the load draws a few milliamps and the input rail is stable. Rated for 500 mW continuous power dissipation, it handles the thermal load of a typical bias or clamp circuit without a heatsink in free air. The 22 Ohm max impedance (Zzt) means the regulation voltage shifts about 22 mV per mA of current change — a consideration if the Zener current varies widely.
DO-35 axial — through-hole for prototyping and rugged builds
The operating temperature range of -65°C to 175°C covers military, aerospace, and downhole applications where the ambient swings wide.