Can I replace a transistor with any other transistor?

Can I replace a transistor with any other transistor?

Fortunately it is normally possible to use a replacement transistor type as there is often a considerable degree of overlap between the specifications of different types of transistor, and by looking at the basic specifications it is normally possible to choose the correct transistor replacements.

Is SL100 a PNP transistor?

An NPN transistor consists of layer of p-doped semiconductor between two n-doped layers. Whereas a PNP transistor consists of n-doped semiconductor between two p-doped layers. The most common example in usage being the SL100 transistor. Sl100 transistor is a general purpose, medium power NPN transistor.

Are NPN transistors interchangeable?

Answer: NPN and PNP transistors are interchangeable if you remember one simple rule: A bipolar transistor is essentially two back-to-back diodes with the base being the common connection. For a transistor to work, one diode is forward biased and the other is reverse biased.

What is the SL100 transistor?

SL100 is a general purpose, medium power NPN transistor. It is mostly used as switch in common emitter configuration. The transistor terminals require a fixed DC voltage to operate in the desired region of its characteristic curves. This is known as the biasing.

How do I choose a replacement transistor?

Choose a substitute transistor with a maximum power rating at least as high as the original. Current gain is only occasionally significant when choosing a substitute transistor. Actual circuit gain depends on other components. But if the original transistor has a high gain, try to match it.

How do I choose a good transistor?

In choosing a suitable switching transistor:

1. The transistor’s maximum collector current must be greater than the load current.
2. The transistor’s maximum current gain must be at least 5 times the load current divided by the maximum output current from the IC.

What is BC548 transistor?

The BC548 is a general-purpose NPN bipolar junction transistor commonly used in European and American electronic equipment. It is notably often the first type of bipolar transistor hobbyists encounter and is often featured in designs in hobby electronics magazines where a general-purpose transistor is required.

What are conditions to have a bipolar transistor on off )?

Here the operating conditions of the transistor are zero input base current ( IB ), zero output collector current ( IC ) and maximum collector voltage ( VCE ) which results in a large depletion layer and no current flowing through the device.

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.

Can I use any NPN transistor?

So yes transistors are interchangeable, if the type (npn/pnp) and required specs match.

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.

How do you know if a transistor is NPN or PNP?

Connect the positive lead of the multimeter to the Base (B) of the transistor and connect the negative lead to the Emitter (E) of the transistor. If it is an NPN transistor then meter should show a voltage drop between 0.45V and 0.9V. If it is a PNP transistor, then it should display see “OL” (Over Limit).