## What is the difference between collector and emitter?

The main differences between emitter and collector are doping concentration and size. The emitter is heavily doped, while the collector is lightly doped. You could try to swap them, but you’ll get a very low HFE, probably even less than 1.

How do you identify emitter base and collector?

In plastic casing, one side of the transistor is Flat which is the front side and the pins are arranged serially. To identify the pins, keep the front flat side facing you and count the pins as one, two etc. In most NPN transistors it will be 1 (Collector), 2 (Base) and 3 ( Emitter ). Thus CBE.

### What is emitter base and collector in BJT?

The Bipolar Transistor basic construction consists of two PN-junctions producing three connecting terminals with each terminal being given a name to identify it from the other two. These three terminals are known and labelled as the Emitter ( E ), the Base ( B ) and the Collector ( C ) respectively.

What is emitter base?

Emitter: Emitter terminal is the heavily doped region as compared two base 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.

## What is the size comparison between base emitter and collector?

The size of the emitter is more than base but less than the collector.

Why collector is wider than emitter and base?

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.

### What is alpha and beta in BJT?

The common-emitter current gain (β) is the ratio of the transistor’s collector current to the transistor’s base current, i.e. β And the common base DC current gain (α) is a ratio of the transistor’s collector current to the transistor’s emitter current, i.e.

Can emitter and collector be interchanged?

Are the collector and emitter terminals of a bipolar transistor interchangeable? No. Transistors are designed to provide the optimum performance when they are correctly connected.

## What is the collector current?

The collector current, along with the base current, is a product of the energy produced through the emitter circuit, which is divided at the base current’s generation through the transistor. Only a fraction of the exiting current is base current, and the remaining portion is considered the collector current.

How do we identify emitter base collector?

– Let the dome side of transistor be facing to your left side. – The first terminal is always collector – And the last terminal us emitter. – As a basic thing the mid terminal is base

### What is the function of base emitter and collector?

– Wavelength of the incident light – Area of the light-exposed collector-base junction – DC current gain of the transistor.

Why collector is made wider than emitter and base?

In order to dissipate the heat, Collector is made with LARGE SURFACE AREA , which makes collector the larger than base and emitter.

## Why is a collector wider than the base and emitter?

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.