0.4W Zener – power budget for voltage reference
The HZS11NB3TD-E is a 0.4W Zener diode from the HZS11NB series, designed for voltage regulation and clamping in low-power DC rails. The 0.4W dissipation ceiling sets the maximum steady-state current at the Zener voltage — for a 11 V nominal Zener, that works out to roughly 36 mA before the junction exceeds its thermal limit in free air.
