What Can Replace A Transistor?

Can I replace transistor with Mosfet?

In general we can easily replace a BJT with a MOSFET, provided we take care of the relevant polarities.

For an NPN BJT, we may replace the BJT with a correctly specified MOSFET in the following manner: Remove the base resistor from the circuit because we don’t typically need it anymore with a MOSFET..

What is the symbol of Mosfet?

The line in the MOSFET symbol between the drain (D) and source (S) connections represents the transistors semiconductive channel. If this channel line is a solid unbroken line then it represents a “Depletion” (normally-ON) type MOSFET as drain current can flow with zero gate biasing potential.

Can I use any transistor?

So yes transistors are interchangeable, if the type (npn/pnp) and required specs match. … If the current through a transistor was only 10mA and they have a part that can tolerate 1A, well, that’s a bit much, and you can find a part that is more suited to what the circuit it.

What is the difference between Transistor and FET?

The major difference between BJT and FET is that in a field-effect transistor only majority charge carries flows, whereas in BJT both majority and minority charge carriers flow….Difference between BJT and FET.BJTFETBJT gain is moreFET gain is lessIts output impedance is high due to high gainIts output impedance is low due to low gain21 more rows

Can I replace IGBT with Mosfet?

Due to the higher usable current density of IGBTs, it can usually handle two to three times more current than a typical MOSFET it replaces. This means that a single IGBT device can replace multiple MOSFETs in parallel operation or any of the super-large single power MOSFETs that are available today.

How much voltage can a Mosfet handle?

Two power MOSFETs in the surface-mount package D2PAK. Each of these components can sustain a blocking voltage of 120 volts and a continuous current of 30 amperes with appropriate heatsinking.

What is difference between NPN and PNP transistor?

In an NPN transistor, a positive voltage is given to the collector terminal to produce a current flow from the collector to the emitter. In a PNP transistor, a positive voltage is given to the emitter terminal to produce current flow from the emitter to collector.

What is the symbol of PNP transistor?

PNP vs NPN TransistorPNP TransistorNPN TransistorSymbolCollector-emitter voltageNegativePositiveEmitter arrowPointed inPointed out6 more rows•Mar 25, 2020

Why use a Mosfet instead of a transistor?

2 Answers. A mosfet requires usually a fair bit more gate voltage than the transistor ~0.7V so that’s an immediate advantage. … Transistor base is also not bothered at all by a high voltage drive signal as long as you have a suitable series resitor in base. A mosfet will fizz if you connect e.g. 48V signal to the gate.

What is difference between mosfet and transistor?

The Bipolar Junction Transistor (BJT) is a current-driven device (in contrast, MOSFET is voltage-driven) that is widely used as an amplifier, oscillator, or switch, amongst other things.

Which transistor is best?

Best Transistors: BJTs#1 NPN – 2N3904. You can find most often NPN Transistors in low-side switch circuits. … #2 PNP – 2N3906. For high-side switch circuits, you need a PNP style BJT. … #3 Power – TIP120. … #4 N-Channel (Logic Level) – FQP30N06L.Apr 21, 2014

How can I buy a transistor?

Choosing a transistor and base resistor for a digital IC outputChoose the right type of transistor, NPN or PNP. … Find out the supply voltage(s) and load properties. … Work out the transistor properties required. … Work out a value for the base resistor R. … Check if you need a protection diode.

Why is FET better than BJT?

FETs offer greater input impedance than BJTs. This means that they practically draw no current and therefore do not load down the power circuit that’s feeding it. BJTs offer greater gain at the output than FETs. The gain (or transconductance) of FETs are smaller than for BJTs.

How do I choose a replacement transistor?

Choose a transistor with a similar power dissipation : It is necessary to ensure that the replacement transistor can handle the power that it will dissipate within the circuit. Choosing a replacement transistor with a similar can style will often mean that both transistors have a similar power dissipation.

Can we replace NPN transistor with PNP?

Generally, the PNP transistor can replace NPN transistors in most electronic circuits, the only difference is the polarities of the voltages, and the directions of the current flow. PNP transistors can also be used as switching devices and an example of a PNP transistor switch is shown below.

Which is better IGBT or Mosfet?

When compared to the IGBT, a power MOSFET has the advantages of higher commutation speed and greater efficiency during operation at low voltages. … The IGBT combines the simple gate-drive characteristics found in the MOSFET with the high-current and low-saturation-voltage capability of a bipolar transistor.

Why do we use Mosfet?

Power MOSFETs are commonly used in automotive electronics, particularly as switching devices in electronic control units, and as power converters in modern electric vehicles. The insulated-gate bipolar transistor (IGBT), a hybrid MOS-bipolar transistor, is also used for a wide variety of applications.

When PNP transistor is used as an amplifier?

Solution : When NPN transistor is used as an amplifier, majority charge carriers electrons of N-type emitter move from emitter to base and than base to collector. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.