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Diodes - Zener - Single

1N4735PE3/TR12 is a type of Zener diode which utilizes a double alloy junction with a PN junction at its heart. It functions as a type of voltage regulator, regulating a DC voltage in order to prevent the voltage from exceeding a predetermined safe level. It is packaged in a standard 4-pin configurations and is suitable for use in multiple applications.

Application Field

1N4735PE3/TR12 is primarily designed for an applications requiring a steady and reliable output voltage. It is used in applications where voltage needs to be maintained, such as analogue circuits, car audio devices, and emergency lighting systems. It also can be used in transistor and radio frequency amplifiers and in circuit boards.

Working Principle

The 1N4735PE3/TR12 consists of a two-alloy junction at its core which functions as a PN junction. The PN junction is characterized by a reversed breakdown voltage, which is the voltage across the PN junction at which the current is limited. In other words, the Zener diode works to maintain a preset voltage by “clamping” the voltage, meaning once the voltage reaches the preset level, the diode does not allow it to rise any further.

The diode is composed of a N-type semiconductor and a P-type semiconductor which are placed together in a single package to form a PN junction. The N-type semiconductor is connected to a positive voltage and the P-type semiconductor is connected to a negative voltage. When a current is applied to the junction, a voltage drop is created between the two sides of the junction. At a certain amount of voltage, the junction “breaks down” and current is limited. This process is known as the Zener breakdown.

When the voltage across the diode reaches the breakdown voltage, the diode begins to limit the amount of current that can flow across the junction. This helps to maintain the voltage at the desired level and helps to protect the components of the circuit from being damaged by excessive voltage. This process occurs in both directions, so that when the voltage goes above and below the breakdown voltage, current is limited in both cases.

Conclusion

1N4735PE3/TR12 is a single 4-pin device which can regulate voltage in order to prevent damage of electronic components and circuitry. With a double alloy junction and PN junction at its core, it is typically used in applications where a steady and reliable output voltage is required. It functions as a voltage regulator, clamping or limiting the voltage once it reaches a preset level. In this way, the diode can provide reliable output voltage and protect the components of the circuit from being damaged by excessive voltage.

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