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Recognition and Measurement of Electronic Components

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This video mainly explains the diode code and parameter identification

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In circuit diagrams, diodes are identified with the letter D

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Among them, the anti-static diode is marked with DZ or ZD

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In the drawings of Android models, some diodes will be marked with ESD

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Both Figure 2 and Figure 4 belong to anti-static diodes

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The role of anti-static diodes

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Prevent static electricity from damaging the chip

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when suddenly plugging or unplugging the phone card or button, and play a protective role

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It is generally installed on the interface line

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Diode parameter identification

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In the drawing, D5651 is the position number of the diode

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05F30 is marked under the diode,

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the parameters indicate that its withstand voltage is 30V,

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and the maximum current that can pass is 500mA

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Because the diodes in mobile phones are relatively small,

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we don't need to consider the power

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In other high-power circuit boards,

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it is necessary to consider the power of the diode

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Ok, that's it for this lesson