Technician 2026-2030T6B01

Which is true about forward voltage drop in a diode?

A
Answer
Electronic components and circuits
Type
A
It is lower in some diode types than in others
B
It is proportional to peak inverse voltage
C
It indicates that the diode is defective
D
It has no impact on the voltage delivered to the load

Answer Notes

When current flows forward through a diode, a small amount of voltage is 'dropped' or consumed across the component. This forward voltage drop varies depending on the semiconductor material used to make the diode. For example, a silicon diode typically drops about 0.7 volts, while a germanium or Schottky diode drops a lower amount, around 0.3 volts. This drop is a normal characteristic of diodes, not a sign of a defect, and it definitely impacts the load because the load receives the source voltage minus the diode's forward voltage drop. It is also completely independent of the peak inverse voltage rating.
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