Question

the number of depletion layer in a transistor ​

Answer 1

Originally Answered: What is the number of depletion layers in a transistor? For a BJT there is one for each pn-junction. Therefore, there are two depletion regions. The thickness of the depletion layer will depend on the biasing condition applied to the junction.

Answer 2

The number of the depletion layer in a transistor ​is 2.

The depletion area, otherwise called a depletion layer, depletion zone, intersection district, space charge area, or space charge layer in semiconductor physical science, is a protecting locale inside a conductive, doped semiconductor material where the portable charge transporters have diffused away.

• There are two consumption zones: a couple of intersections, producer to endlessly base to gatherer, as well as two exhaustion districts.
• A bipolar semiconductor with an NPN intersection.