DDZ14B-7

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The DDZ14B-7 Zener single diode is an active component that is used to provide a voltage reference value. It is designed to function with two applications: voltage regulation and voltage clamping. This section describes the principles of this device and how it is used in these applications.

Voltage Regulation:

The DDZ14B-7 is a “silicon” Zener diode, which means it has a reverse break down voltage or avalanche voltage of about 7 volts. When the voltage across the device is below the Zener voltage, it operates as a simple rectifier. When the voltage across the device is above the Zener voltage, it starts regulating the reverse current limiting it to the Zener value and thereby providing a precise voltage reference.

It works by having the breakdown voltage and temperature-dependent internal resistance being in series with the diode. As the voltage increases, the resistance increases, resulting in a maximum voltage on the diode’s anode terminal and therefore regulating the voltage. On the other hand, when the voltage decreases, the reverse current is allowed to flow through the diode; however, it is still limited to the Zener voltage.

Voltage Clamping:

When a voltage over a predetermined value is needed, the DDZ14B-7 is used as a “clamping device” to protect other circuits during high voltage conditions. It can be used as part of a circuit to limit the energy supplied to an component. This kind of protective circuit, usually consists of a Zener diode and a resistor connected in series with the component.

The Zener diode will limit the voltage the component will see to the Zener value. This mechanism is used to limit energy applied to a component to a certain threshold and therefore protecting it against voltage surges. In this configuration current is allowed to flow through the Zener in the forward direction and is clamped at the Zener voltage.

Conclusion:

The DDZ14B-7 Zener single diode can be used in many applications with the most common being voltage regulation and voltage clamping. It operates as a voltage reference and a protector in the circuits. Its temperature-dependent internal resistance gives it the characteristic of limiting the reverse current and the voltage limiting. With these features, this device is a great choice for many applications where precise voltage regulation and protection of components is required.

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