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The three major causes of KBPC5010 breakdown

Return ListSource:Asemi Date:2010.12.31 Read:0

The KBPC5010 is a widely used integrated rectifier bridge with a very high popularity and numerous application cases in the high power supply world. The KBPC5010 is also broken down during use. How can I open the rectifier bridge KBPC5010 with the correct posture? The KBPC5010 is mainly caused by three factors, so avoid the following three situationsto occurrence is very important, let's focus on the following.


Current breakdown accounts for the largest proportion of all KBPC5010 damage cases. The current breakdown is very well understood: it means that the KBPC5010 is directly damaged by current because it cannot withstand excessive current. We know that KBPC5010 belongs to semiconductor power devices. Its working principle is to use four-way single-pass characteristics of diodes to package four rectifier diode chips in one integrated block. Its characteristics are like a channel. Only changing the polarity of the current does not change its current value. When the current exceeds the tolerance of the channel, the rectifier bridge KBPC5010 will naturally be broken down.


The three major causes of KBPC5010 breakdown.1

Voltage breakdown is a relatively large aspect of all KBPC5010 damage cases. The voltage breakdown is also very well understood: it is directly broken down when the reverse voltage of the circuit exceeds the capacity of the KBPC5010. Earlier we said that the rectifier bridge KBPC5010 utilizes the diode's unidirectional conduction characteristics, which means that the diode chip works when the current is positive half-axis, and the diode chip should be reversed when the current is negative half-axis. Assuming that the reverse voltage in the circuit exceeds the maximum reverse withstand voltage limit of KBPC5010, the internal chip will be broken down, which means that KBPC5010 is broken down by voltage.


Thermal breakdown occurs rarely in machine automatic welding, but is more common in manual manual welding. We know that the inside of the KBPC5010 rectifier bridge is composed of four diode chips, but the junction temperature of the diode PN is about 150 °C. Therefore, when the soldering time is too long and the temperature rises, it is easy to blow the built-in chip to cause the KBPC5010 rectifier bridge to be thermally broken down. Therefore, it is also an important issue to improve the level of the welding process in practical applications, which will prevent the occurrence of thermal breakdown of KBPC5010 to a certain extent.


The above is a detailed introduction of the KBPC5010 which will be penetrated by three aspects. It is for reference only and I hope to help you. 12 years of dedicated power rectifier devices, ASEMI high quality, sincere service, win-win cooperation, look forward to your cooperation and participation.


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