1N4728A BK

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1N4728A BK Application Field and Working Principle

1N4728A BK Seires zener diodes belong to diodes - zener - single. It has a forward voltage drop of 1.1V and its power dissipation of 500mW. It is available in axial leads. This type of diode is widely used in stabilizing voltage and as voltage references.

Application Field

The 1N4728A BK Series is suitable for various applications such as regulating voltage, powering LEDs and stabilizing voltage for various components. This kind of diode is widely used for various applications such as:

• Regulator Circuits.
• Power Factor Correction Circuits.
• Clamp Circuits.
• High Voltage Stabilization Circuits.
• Voltage Regulated Power Supplies.
• Voltage References.
• LED Lighting.

Working Principle

The 1N4728A BK Series is a reverse biased zener diode, which means that it has two internal p-n junctions. When the diode is reverse biased it acts as an open circuit and no current flows. When the voltage across the diode increases, and the zener breakdown voltage is exceeded, the excess electrons overcome the internal repulsion force of the junction and current begins to flow through the diode reversibly.

The major role of 1N4728A BK Series is during the breakdown of the diode. This breakdown occurs when the total voltage across the diode is more than the zener breakdown voltage, which for 1N4728A BK Series is 6.2V. When the breakdown voltage is exceeded, a reverse current flows through the diode in order to maintain the voltage at the breakdown voltage of 6.2V. The amount of current that flows through the diode is determined by the load resistance.

The 1N4728A BK Series also acts as a voltage regulator, regulating the output voltage of an AC or DC power supply to the zener breakdown voltage of 6.2V. The zener diode has to be connected in reverse bias in order to make it works as a voltage regulator. The excess current that flows through the zener diode is then dissipated as heat.

Conclusion

In conclusion, 1N4728A BK Series are widely used in voltage regulation and stabilizing voltage for various applications. It works by reverse biasing the diode, which when the total voltage across is more than the zener breakdown voltage, it conducts current in order to maintain the voltage at the breakdown voltage of 6.2V. Its major role is to regulate excessive current and regulate the power output to a desired level.

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