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Hello everyone, in this lesson we will talk about the replacement of diodes

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The replacement of diodes needs to follow the following principles

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When the diode is used in the signal circuit,

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it can be directly replaced as long as the appearance is consistent

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When the diode is used in the power supply circuit, it needs to have the same appearance and

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The power should not be lower than the original value before it can be replaced

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Because we cannot easily find out directly the power of the diode

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Therefore, it is recommended to replace the original circuit

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For example, the diode of the boost circuit can be directly replaced

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by the diode of the boost circuit on other motherboards.

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So how to distinguish whether the diode is used in the signal circuit

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or the power supply circuit by its appearance?

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Diodes used in signal circuits are generally small in size

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And the traces from the diode pins are generally thinner.

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For example, the diode on the upper right

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The traces from the two pins are very thin

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The diodes used in the power supply circuit are generally relatively large in size,

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and the traces drawn from the pins are generally relatively thick

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For example, the diode in the lower right figure

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The traces from the two pins are very thick