How much voltage does a transistor have?

How much voltage does a transistor have?

Generally speaking, this value is between . 6 to . 7 volts for a general-purpose transistor.

Why is there a maximum limit of collector supply voltage for a transistor?

Because there is generally a load resistor in series with the collector. Current through the resistor increases, voltage across the resistor increases. Which leaves less voltage for the transistor.

What could happen if you supply a current over the maximum rating of a transistor?

If you supply a current over the maximum rating, the transistor might blow up. The series resistor between our control source and the base limits current into the base. The base-emitter node can get its happy voltage drop of 0.6V, and the resistor can drop the remaining voltage.

How do you calculate the power of a transistor?

The power dissipated in the transistor is the voltage drop across the collector emitter junction times the collector current (neglecting the base current times the 0.75V base emitter drop). In the linear range this could be something like 6V@100mA = 600mW (a lot for a little transistor).

What is transistor power rating?

Power Rating is the maximum amount of power that a device can dissipate in a typical operating environment. BJT Power Rating = Collector Emitter Voltage * Collector Current + Base Emitter Voltage * Base Current. For example, to estimate the power rating of Micro Commercial Co (MCC), BC856BM-TP.

What happens if we increase the collector supply voltage?

When the collector supply voltage is increased electrons will be attracted to it more rapidly of course this action is restricted to certain level of supply voltage only and beyond this supply voltage the collector current is almost constant.

Is it normal for a transistor to have less than its maximum voltage?

It’s normal for a transistor to have a power rating much less than the product of its rated voltage and maximum current. You don’t link a datasheet so I’ll make this short: No.

How are transistors different from other non linear devices?

Unlike resistors, which enforce a linear relationship between voltage and current, transistors are non-linear devices. They have four distinct modes of operation, which describe the current flowing through them. (When we talk about current flow through a transistor, we usually mean current flowing from collector to emitter of an NPN.)

How are current voltage and resistance related to each other?

We say that current is analogous to the flow rate of water, voltage is the pressure pushing that water through a pipe, and resistance is the width of the pipe. Unsurprisingly, the water analogy can be extended to transistors as well: a transistor is like a water valve — a mechanism we can use to control the flow rate.

Is there a maximum voltage for a BJT?

You have already identified that Voltage times Current equals Power, but keeping within the maximum power doesn’t allow you to exceed the maximum current or voltage. All parameters must be below the limit. It’s slightly more complicated for a BJT, because its SOA is not as simple as for a MOSFET. No. 400 V and 300 mA are independent maximum specs.