Smd Zener Diode Sod 123 - China

Glass, 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 models and voltage regulation values ​​of commonly used Zener diodes are as follows: Model number: 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 over-voltage protection circuits in TV sets, and in series-type voltage-stabilizing circuits, the series-type voltage-stabilizing circuit is used in many occasions, and more stable power can be obtained by connecting in series.

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

Five parameters of Zener diode:

1 - Stable voltage

With the change of operating temperature and current, the Zener diode needs to be stabilized.

2 - Working current

The voltage stabilizing diode changes according to the operating current.

In general, the operating current is large, and the effect of voltage stabilization will be better.

3 - Stable current

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

4 - Dissipated power

In actual use, the Zener diode consumption 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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