Table of Contents
Why collector is large and base is smaller in BJT?
The reason the collector is the largest region is because it is the region which receives the majority of the current carriers, which for a npn transistor are electrons and for pnp transistors are holes. If the collector were smaller, it would overheat quicker, and, thus, the transistor would overheat easily.
Why is Collector large in size?
Answer: The collector region is the largest of all regions because it must dissipate more heat than the emitter or base regions. It is designed to be large because in order to dissipate all the heater, the extra surface area allows it to do so. …
Why is the collector the largest?
The collector region is the largest of all regions because it must dissipate more heat than the emitter or base regions. It is designed to be large because in order to dissipate all the heater, the extra surface area allows it to do so.
Why is the emitter of the base and the collector of a BJT doped differently?
To improve the emitter efficiency and the common-base current gain (a), it can be shown that the emitter should be much heavily doped than the base. A low doping level of the collector increases the size of the depletion region. This increases the maximum collector-base voltage and reduces the base width.
Which element is biggest size?
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
Why the collector is large in size?
The collector region is the largest of all regions because it must dissipate more heat than the emitter or base regions. It is designed to be large because in order to dissipate all the heater, the extra surface area allows it to do so. The larger area ensures that it has more surface area to dissipate heat.