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Distinguish common cathode and anode diodes ?

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Common

cathode diode and

common anode diode

Common diodes are mostly common cathode diodes, and today I want to share with you the basic common sense of the common cathode and common anode. This chapter takes the ASEMI brand professional fast recovery diode MUR2060CT and MUR2060CTR as an example to interpret this knowledge point.

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MUR2060 VS MUR2060CTR

To understand the difference between the MUR2060CT and the MUR2060CTR, we must first start with the definition of the principle of the diode.

Internal structure principle

As a common rectifier component, the internal structure principle of the diode is to allow only one direction of current to pass and rectify, and to convert the alternating current into direct current. In the fast recovery diode MUR2060CT and MUR2060CTR packages, there are two diodes inside, and the bridge rectifier structure is also composed of these two diodes.


MUR2060CT

“Cathode” refers to the negative pole, reverse current or finger output, and “common cathode” means sharing one lead as an output. The MUR2060CT is a common cathode tube, which indicates that the output current of this type of fast recovery diode is shared by one lead. Like the MUR2060CTR, the MUR2060CT is also available in a TO-220 package with three pins, the leads; the common one is the middle pin, so the current direction is the two-stage input forward current, and the middle pin is connected to the negative output. .


MUR2060CTR

“Anode” refers to the positive pole, forward current or finger input, and “common yang” means sharing one lead as an input. The MUR2060CTR is a common anode tube, which indicates that the input forward current of this type of fast recovery diode is shared by one lead.


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