DL4933-13

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Discontinued at Digi-Key
Diode Type:	Standard
Voltage - DC Reverse (Vr) (Max):	50V
Current - Average Rectified (Io):	1A
Voltage - Forward (Vf) (Max) @ If:	1.2V @ 1A
Speed:	Fast Recovery = 200mA (Io)
Reverse Recovery Time (trr):	200ns
Current - Reverse Leakage @ Vr:	5µA @ 50V
Capacitance @ Vr, F:	15pF @ 4V, 1MHz
Mounting Type:	Surface Mount
Package / Case:	DO-213AB, MELF
Supplier Device Package:	MELF
Operating Temperature - Junction:	-65°C ~ 150°C
Base Part Number:	DL4933

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Introduction

DL4933-13 is a type of single rectifier diode. It is a low-voltage device with a maximum current rating of 13A. The main application field of DL4933-13 is that of power supply, where it can be used to convert alternating current (AC) to direct current (DC). Its working principle is based on the P-N junction of the diode, which allows current to flow in the forward direction only.

P-N Junction and its Working Principle

The P-N junction is the most important component of a diode. It is composed of two different semiconductor materials that have been fused together – one with excess positive charge (P-type material) and a second with excess negative charge (N-type material), forming what is known as a rectifying junction. The current in a P-N junction flows from the N-type material to the P-type material and is known as the forward current. The current has to overcome a potential barrier known as the “barrier potential” before it is able to pass through the junction. On the other hand, if the reverse current is applied on the junction, the potential barrier is high and the current is unable to pass through the junction. This is the working principle of a diode. In the case of DL4933-13, it is a low-voltage, single rectifier diode. It has a maximum current rating of 13A and its main application lies in the field of power supplies. The forward current of DL4933-13 is 13A, while the reverse current is limited to a maximum of 5mA. The main function of this diode is to convert alternating current (AC) to direct current (DC).

Effect on Voltage

The effect of DL4933-13 on voltage is twofold. Firstly, the forward voltage drop of the diode determines the amount of voltage that is supplied to circuit load. In other words, for a given current, the forward voltage drop dictates the amount of voltage that is delivered to the circuit. Secondly, the diode also acts as a voltage regulator; it will limit the voltage from exceeding the set maximum value. In order to understand how the diode regulates voltage, one must understand how a diode behaves when in reverse bias mode. When DL4933-13 is connected in reverse bias mode, a suggested reverse breakdown voltage of 105V is recommended. This means that once the voltage across the diode exceeds 105V, it will be unable to dissipate the excess current, resulting in an overvoltage situation.

Benefits of Using DL4933-13

DL4933-13 has a few benefits when compared to other types of diodes. Firstly, it has a low forward voltage drop, providing efficient power conversion in low-voltage applications. Secondly, it has a low reverse voltage, which means that it can protect the circuit from overvoltage situations. Lastly, it is also relatively inexpensive when compared to other types of diodes, making it cost-effective for low-power applications.

Conclusion

To sum up, DL4933-13 is a single rectifier diode with a maximum current rating of 13A. It is used mainly in power supply applications, where it converts AC to DC. The forward voltage drop of the diode will determine the amount of voltage that is supplied to the circuit, while the reverse voltage drop prevents overvoltage situations. It is low-cost and efficient at outputting power, and therefore it is a good option for low-power applications.

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