Zener Diode Calculator

Design zener diode voltage regulator circuits with proper component values.

Circuit Parameters

Nominal Input Voltage (V)

Min Input Voltage (V)

Max Input Voltage (V)

Zener Voltage (V)

Load Current (mA)

Zener Power Rating (mW)

69.7

Calculated (ohms)

Standard (ohms)

0.68W

Power Dissipation

1.5W

Recommended Rating

Valid Design

Voltage Across Resistor6.90 V

Total Current99.02 mA

Nominal Zener Current49.02 mA

Iz at Min Vin20.32 mA

Iz at Max Vin92.07 mA

Min Iz Required9.80 mA

Max Iz Allowed98.04 mA

Zener Power (Max Vin)469.6 mW