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→Fiche technique d'une Diode
= Fiche technique d'une Diode =
= Fiche technique d'une Diode =
All of the above characteristics should be detailed in the datasheet for every diode. For example, this [http://www.vishay.com/docs/81857/1n4148.pdf datasheet] for a 1N4148 diode lists the maximum forward voltage (1V) and the breakdown voltage (100V) (among a lot of other information):
All of the above characteristics should be detailed in the datasheet for every diode. For example, this [http://www.vishay.com/docs/81857/1n4148.pdf datasheet] for a 1N4148 diode lists the maximum forward voltage (1V) and the breakdown voltage (100V) (among a lot of other information):
[[Fichier:Diode-fiche-technique-1N4148.png]]
A datasheet might even present you with a very familiar looking current-voltage graph, to further detail how the diode behaves. This graph from the diode’s datasheet enlarges the curvy, forward-region part of the i-v curve. Notice how more current requires more voltage:
[[Fichier:Diode-fiche-technique-1N4148-02.png]]
That chart points out another important diode characteristic – the maximum forward current. Just like any component, diodes can only dissipate so much power before they blow. All diodes should list maximum current, reverse voltage, and power dissipation. If a diode is subject to more voltage or current than it can handle, expect it to heat up (or worse; melt, smoke,…).
Some diodes are well-suited to high currents – 1A or more – others like the 1N4148 small-signal diode shown above may only be suited for around 200mA.
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