BZX84B33-E3-18

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Diodes, also known as rectifiers, are two-lead semiconductor devices used to convert AC into DC. BZX84B33-E3-18 is a single Zener diode, commonly used in applications that require precise voltage regulation or current flow limiting. It is widely used in LTE base station DC power supply systems, computer power supplies, and other circuit components.

A single Zener diode is made of semiconducting material like silicon, germanium and other compounds. When the voltage is applied to the diode and reaches its Zener voltage, otherwise known as the reverse breakdown voltage, the diode gets an increased current flow instead of the normal current flow. Thus, the diode acts as a regulator. On applying the reverse breakdown voltage to a single Zener diode, an internal electric field creates an opening in the diode allowing the electrons to break through, rather than being blocked and allowing current to flow in the reverse direction.

The application of the BZX84B33-E3-18 Zener diode depends on its ability to produce a constant voltage even when the input voltage fluctuates. Therefore, BZX84B33-E3-18 can be used in power supplies (such as switching power supplies), power regulators, voltage reference sources, reverse voltage protection circuits, over current protection circuits, load electronic circuitry against transient over-voltage, and other circuits that require precise voltage regulation.

The BZX84B33-E3-18’s primary advantage is its very low dynamic regulation, as well as its very low forward voltage drop. This is particularly important in power supplies where the power dissipation is of key importance. Additionally, its low power dissipation and good thermal resistance make the diode ideal for applications that require high accuracy with low forward voltage variations.

In terms of its working principle, the BZX84B33-E3-18 Zener diode works by maintaining a constant output voltage across its leads even when the input voltage changes. It does this by allowing a certain amount of current to flow through the diode when the input voltage reaches the Zener voltage. The current then bypasses the diode, rather than passing through it, while the diode maintains a constant voltage across its leads. This voltage is known as the Zener voltage, and is the exact voltage that should be regulated.

The nominal Zener voltage of the BZX84B33-E3-18 is 18 Volts. It is capable of handling up to 1.3 Watts of power and comes with a maximum junction temperature of 150 °C. Furthermore, the Zener diode is designed to be able to handle 5 milliamps of current, and the maximum forward voltage drop is 0.2 Volts. Its rated reverse current is 1.5mA, and its capacitance is 12pF.

In conclusion, the BZX84B33-E3-18 is a single Zener diode used in a variety of applications that require precise voltage regulation. Its low dynamic regulation and low forward voltage drop make it an ideal choice for a variety of power supply applications, power regulators, and reverse voltage protection circuits. When the voltage is applied to the diode and reaches its Zener voltage, the diode produces a constant output voltage across its leads even when the input voltage varies.

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