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crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Arthur Shi

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[title] Diode basics
[* icon_note] A diode is a device that allows current to easily flow through it in one direction: from the anode end to the cathode. Diodes are commonly found in power supplies and converters.
[* icon_note] A light emitting diode (LED) is a popular sub-category of diodes that light up as current flows through it. LEDs work only when they're connected in the correct orientation.
[* icon_note] A diode's cathode (or "output" end) is [link|https://guide-images.cdn.ifixit.com/igi/xXWWWbVqMgRA5k2l.full|marked with a white band|new_window=true]. An LED's cathode is normally the short lead.
[* icon_note] In order for the diode to turn on and let current through, the voltage at the anode (input) has to surpass a threshold. This is known as the ''forward bias'' or ''forward threshold voltage''. The threshold voltage can be 0.6V-5V.
[* icon_note] If voltage is applied to the cathode (output) end, the diode will resist current flow up to a certain voltage limit. This is known as the ''breakdown voltage''. If the voltage surpasses the breakdown voltage, the diode will burn out and act like a short circuit.
-[* icon_note] Diodes (including LEDs) are normally very robust and won't break down even under extended use. They break mostly because they're installed in reverse, or if they're unintentionally shorted during testing.
+[* icon_note] Diodes (including LEDs) can break either as an open-circuit or a short-circuit. If too much current flows through the "forward" direction, the diode will burn out like a fuse, creating an open-circuit. If the diode is accidentally installed in reverse, it may short-circuit.