Zener Diodes for Voltage stabilization

A Zener diode is a special kind of diode which allows current to flow in the forward direction like a regular diode, but also allows it to flow in the reverse direction when the voltage is above a certain value. This is known as the ‘breakdown voltage’. That means you apply voltage across them, and when a preset voltage is reached, they start conducting. A common analogy is a ‘pressure relief valve’. They have lots of uses, especially in safety circuits where you want to make sure a voltage signal doesn’t exceed a limit that might damage the circuit.

Specification of BZX55C12V0 12V 1/2W Zener Diode DO-35
Supply Voltage: BZX55C12V0 12V
Type: Low Power Switching Zener Diode
Package: DO-35
Diode Configuration: Single
Zener Voltage Tolerance: 5%
Package Type: Through Hole
Dissipation Power: 1/2 W
Dimensions: 4.25 x 1.85 x 1.85mm
Operating Temperature: -40°C to 85°C