What voltage is my Zener diode?

Place the multimeter on a DC voltage setting. Measure the voltage across the diode by placing a multimeter lead on each terminal. It should read approximately 5.6 volts, though the value may be as low as 5.32 or as high as 5.88 volts. Note that the voltage between the battery and ground remains at 9 V.

How is zener voltage calculated?

The maximum current is calculated by dividing the power rating by the Zener voltage: I=P/V = 3W/12V = 0.25A.

How do you identify a 12v Zener diode?

Note place a diode across the meter probes. One way they’ll read a low voltage (under 1V). The other way, if they read less than 18V then the diode is likely to be a zener diode. The voltage you see on the multimeter is the zener diode voltage.

When does a Zener diode need to be replaced?

When measuring the voltage across the zener diode, it must measure a voltage near its rated zener voltage. If a zener diode reads a voltage near its rated zener voltage, V Z, then it is good. If the diode reads a much higher voltage, of or near the voltage of the supply voltage feeding it, it is open and, thus, defective. It should be replaced.

How does avalanche effect occur in a Zener diode?

The avalanche effect occurs in both rectifier and Zener diodes at a sufficiently high reverse voltage. On the other hand, Zener breakdown occurs in a Zener diode at low reverse voltages. A Zener diode is heavily doped to reduce the breakdown voltage. This causes a very thin depletion region.

What do you need to know about The DO-35 diode?

DO-35 Diode Package Details. Diode Package DO-35 Case style, Through-Hole. DO-35 Diode, Axial Lead Component Package. The DO-35 package is a 2-terminal Axial Leaded Through-Hole device. The leads should be bent near the component body to keep them as short as possible, and also insure the body is raised up just above the surface of the PWB.

Which is the maximum impedance of a Zener diode?

ZZ is the maximum Zener impedance at the specified test current, IZ. For example, for a 1N4728A, ZZ is 10Ω at 76mA. At the knee of the characteristic curve, the maximum Zener impedance ZZK is specified at IZK which is the current at the knee of the curve. For example, ZZK is 400Ω at 1mA for a 1N4728A.