Why width of collector is high?

In most transistors, the collector region is made physically larger than the emitter region because it has to dissipate much greater power.

What is the size comparison between base emitter and collector?

This is because the work of the emitter is to supply charge carrier to the collector via the base. The size of the emitter is more than base but less than the collector. Base: The size of the base region is extremely small, it is less than emitter as well as the collector.

Why emitter current is larger than collector current?

We know that the concentration of the impurities in the collector is slightly less than the concentration in the emitter. Hence, even if you apply the battery at the junction of the collector and the base in forward bias, the emitter current will always be greater than the collector current.

What is the difference between base collector junction and base emitter junction?

The physical area of the base-collector junction must be larger than the area of the base-emitter junction, as this is why the transistor has gain. Carriers injected from the emitter to the base have a choice of destinations – the base, or the collector.

What is the difference between a transistor emitter and collector?

The transistor has three regions, emitter,base and collector. The base is much thinner than the emitter while the collector is wider than both. However for the sake of convenience the emitter and collector are usually shown to be of equal size. The transistor has two pn junctions that means it is like two diodes.

Why is the base-collector junction of a transistor always vertical?

Hence you get the classic vertical design of the small top emitter and larger bottom collector. The physical area of the base-collector junction must be larger than the area of the base-emitter junction, as this is why the transistor has gain. Carriers injected from the emitter to the base have a choice of destinations – the base, or the collector.

Why emitter section has more number of molecules than collector section?

It is so because emitter is heavily doped& therefore having more no. of molecules in its section than that of the collector section because collector is moderately doped.Due to this the section having more no.