Smd Zener Diode - China

SMD Zener Diode

Package: LL34 (1/2W), LL41 (1W), LS-34;

Plastic package, SOD-123, SOD-323, SOD-523

Model: LL4148 LL34 2.2V LL34—75V LL34 (1/2W glass), 3.3V—56V LL41 (1W glass)

2.2V—75V voltage regulator series

MM1Z2V0~MM1Z75

The commonly used Zener diode models and voltage regulation values ​​are as follows: Model: 1N4728, 1N4729, 1N4730, 1N4732, 1N4733, 1N4734, 1N4735, 1N4744, 1N4750, 1N4751, 1N4761 Voltage regulation value: 3.3V, 3.6V, 3.9V, 4.7V, 5.1V, 5.6V, 6.2V, 15V, 27V, 30V, 75V

Zener diodes are used in the overvoltage protection circuit of TV sets.

In series voltage stabilization circuits, series voltage stabilization circuits are used in many occasions, and the series connection can obtain a more stable power supply.

Zener diodes are usually represented by "ZD" plus a number in the circuit.

Five parameters of Zener diode:

1 - Voltage stability

As the operating temperature and current change, the Zener diode needs to be stable.

2 - Working current

The Zener diode changes according to the operating current.

Generally speaking, if the working current is large, the voltage stabilization effect will be better.

3 - Stable current

The Zener diode can stabilize the voltage with the current when it is working.

4 - Power dissipation

In actual use, the power consumption of the Zener diode is not allowed to exceed the standard.

5 Dynamic resistance

When the dynamic resistance is working, it will change due to current and other reasons

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