3.6 V Zener, 5 W — axial through-hole
The 1N6633 is a 3.6 V Zener diode rated for 5 W continuous power in the E-axial through-hole package. The ±5% tolerance on the nominal voltage means the actual Zener voltage sits between 3.42 V and 3.78 V at the test current — tight enough for a reference rail in a linear regulator or a clamp in a low-voltage supply.
2.5 Ohm impedance, 250 µA leakage at 1 V
Maximum dynamic impedance (Zzt) is 2.5 Ohms, which keeps the voltage regulation tight as the Zener current varies — important when the diode doubles as a shunt reference feeding an op-amp or ADC bias. Reverse leakage is 250 µA at 1 V reverse bias, so the diode does not load the rail significantly below its breakdown threshold.
-65 to 175°C operating range
The 1N6633 is rated for -65°C to 175°C junction temperature — military-grade thermal headroom.