Physical Explanation - Vishay Intertechnology
Vishay GENERAL SEMICONDUCTORRectifiersApplication NotePhysical ExplanationAPPLICATION NOTE Revision: 16-Aug-111Document Number: 84064For technical questions within your region: DOCUMENT IS SUBJECT TO change WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENTARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT TERMINOLOGYSemiconductor diodes are used as rectifiers, switches,varactors and voltage stabilizers (see Zener data book).Semiconductor diodes are two-terminal solid-state deviceshaving asymmetrical voltage-current characteristics. Unlessotherwise stated, this means a device has single pn-junctioncorresponding to the characteristics shown in figure 1. Fig. 1 An application of the voltage current curve is given bywhereIf the diode is forward-biased (anode positive with respectto cathode), its forward current (I = IF) increases rapidly withincreasing voltage.
possibility of change in the device’s characteristic. Peak surge reverse voltage, VRSM The maximum permissible surge vo ltage applied in a reverse direction. It is not an operating value. During frequent repetitions, there is a possibility of change in the device’s characteristic. Power dissipation, PV An electrical power converted into heat.
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