24 V regulation in a DO-35 axial package
The 1N6009C is a 24 V Zener diode from Microchip Technology rated for 500 mW continuous power dissipation in a DO-35 (DO-204AH) axial-lead package. The ±2% tolerance on the nominal Zener voltage means the regulation point stays between 23.52 V and 24.48 V at the specified test current — tight enough for a reference rail in a linear regulator or a clamp in a 24 V bus.
Thermal and leakage profile for harsh environments
Operating from -65°C to 175°C, the device covers the full military temperature band — avionics, satellite, or downhole instrumentation where the ambient swings beyond industrial limits. Reverse leakage is 100 nA maximum at 18 V reverse voltage, so the diode draws negligible current below the Zener knee — useful in battery-powered circuits where every microamp counts. Maximum impedance (Zzt) is 62 Ohms at the Zener test current, which sets the dynamic regulation accuracy under varying load current.