Zener Diode
Purpose
Zener diode with controlled reverse breakdown voltage
Library
Electrical / Power Semiconductors
Description
The Zener diode is a type of diode that permits current to flow in forward direction like a normal Diode, but also in reverse direction if the voltage is larger than the rated breakdown or Zener voltage. Zener diodes are widely used to regulate the voltage across a circuit.
Parameters
- Zener voltage
Breakdown voltage \(V_{\mathrm{z}}\) in reverse direction, in volts \((\mathrm{V})\). If the diode is reverse conducting, the voltage drop across the diode is determined by this Zener voltage plus the voltage across the Zener resistance.
- Zener resistance
The resistance \(R_{\mathrm{z}}\), in ohms \((\Omega)\), if the diode is reverse conducting.
- Forward voltage
Additional dc voltage \(V_{\mathrm{f}}\) in volts \((\mathrm{V})\) between anode and cathode when the diode is forward conducting. The default is
0.- On-resistance
The resistance \(R_{\mathrm{f}}\) of the forward conducting device, in ohms \((\Omega)\). The default is
0.
Probe Signals
- Diode voltage
The voltage measured between anode and cathode.
- Diode current
The current through the diode flowing from anode to cathode.
- Forward conductivity
Conduction state of the positive internal switch. The signal outputs \(1\) when the diode is conducting in forward direction, and \(0\) otherwise.
- Reverse conductivity
Conduction state of the negative internal switch. The signal outputs \(1\) when the diode is conducting in reverse direction, and \(0\) otherwise.