UFR3130PF

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Introduction

UFR3130PF, a diode rectifier, belongs to the Single diode family. This article will discuss the application field and working principle of UFR3130PF and provide relevant information about its Max repetitive reverse voltage, Max RMS forward voltage, Max surge current, etc.

Application Field

UFR3130PF have applications in many fields, such as home appliances, consumer electronics, computer and communication, color television, etc. As a fast recovery rectifier diode, UFR3130PF mainly performs rectifying and switching functions in DC-DC power conversion circuits and AC-DC power circuits.

Switching function

When UFR3130PF is connected to adcircuit, a junction capable of controlling current can be formed todecrease the current and the reverse voltage. With the switching function,UFR3130PF can be used in small electronic equipment, such as calculators and electronic watches, to control the size of the energy and increase the efficiency of the device.

Rectifying function

In terms of the rectifying function, UFR3130PF can be applied in AC/DC circuit to convert AC power into DC power. Generally, UPF3130PF used in AC/DC rectification circuit has a bridge connection structure, which maximizes the utilization rate of the rectified current.

Working Principle

The working principle of UFR3130PF can be classified into three stages: turn-on,conduction and turn-off.

Turn-on stage

When the reverse bias voltage continues to increase until it reaches a certain value, the junction voltage Vj will also increase, but at a certain point Vj will reach the breakdown voltage level and accelerate the ionized electrons in the anti-drift direction. The same thing happens in the minority carrier region, and the electrons and holes of the two regions first combine to generate a partial current, which increases exponentially with the increase of voltage.

Conduction stage

When the voltage across the diode reaches the breakdown value, the chemical energy stored in the junction between the p-material and the n-material is released, barriers between electrons and holes are broken, and a high-density current will pass through the diode. At the same time, part of the electric field inside the junction is also released, and the electric field lines outside the junction will not be able to penetrate the inside at higher concentrations.

Turn-off stage

When the forward bias voltage across the pn junction decreases, the built-in electric field will gradually increase, causing the electrons and holes to be repelled by each other, which will cause the current to gradually decrease, and when the current slowly becomes zero, the junction will slowly enter the original equilibrium state.

Conclusion

In conclusion, UFR3130PF, a commonly used single diode, has many applications in fields such as DC-DC converter, AC-DC rectification circuit, electronic watches, calculators, and other consumer electronic products. Its working principle mainly includes turn-on, conduction and turn-off stages, where the built-in electric field is essential to the whole process. And its Max repetitive reverse voltage is 30V, Max RMS forward voltage is 1.3V and its Max surge current is 2A.

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