1N4748A

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Diodes are electrical components that are designed to allow electric current to move in only one direction, with a relatively low resistance in the forward direction and a higher resistance on the reverse direction. Zener diodes are a specific type of diode with a reverse breakdown voltage, allowing these components to behave like voltage regulators in electronic circuits.

The 1N4748A diode is a popular choice among zener diodes. It is designed to function as a single diode in a variety of applications, including voltage regulation. This diode has a maximum power dissipation of 500 mW and is composed of a power package of epoxy and ceramic.

Application Field:

The 1N4748A diode have many possible applications such as surge suppression, voltage regulation, transient protection and precision voltage references. It has been widely used in areas where the accurate operation of a circuit is imperative. It is mainly used to protect circuits from voltage surges and to regulate voltage to a certain level.

It can also be used in automotive circuits as a reliable solution by providing circuit protection from voltage overshoots. It is designed to cope with sudden shocks of input voltage and quickly recovers to normal working conditions in order to provide a reliable circuit for the vehicle.

Working Principle:

The 1N4748A diode is designed so that when a forward current of 20 mA is applied, it develops a reverse breakdown voltage of 10V. When the reverse breakdown voltage of the diode is reached, the voltage across the two terminals of the diode will remain constant (i.e. it behaves like a short circuit).

The working principle of the 1N4748A diode also involves a thermal rolloff voltage. The rolloff voltage is the voltage across the diode at a certain temperature, which can be as low as 7.5V or as high as 11V. The rolloff voltage is an important factor that needs to be considered when designing a circuit or system with the 1N4748A.

In addition, the 1N4748A has a maximum reverse leakage current of 2 µA, which makes it a suitable device for voltage regulation. This is due to the fact that the current leakage is very low and allows for a precise regulation of the circuit.

Finally, the 1N4748A diode also has temperature coefficient that needs to be kept in mind when designing a circuit. This coefficient is a measure of the rate at which the diode\'s characteristics change with temperature, and it can be between 0.15 and 0.08.

Conclusion:

In conclusion, the 1N4748A is a popularly-used zener diode due to its variety of application fields, excellent performance, and low power consumption. This diode is designed to function as a single diode in a variety of applications and has the capability to provide precise, reliable, and efficient voltage regulation. Its working principle involves a reverse breakdown voltage and thermal rolloff voltage, as well as a temperature coefficient, all of which needs to be taken into account when designing a circuit.

The specific data is subject to PDF, and the above content is for reference