How do I find a replacement transistor?
How do I find a replacement transistor?
Picking a replacement transistor
- Choose a transistor of the same polarity: The first major selection criterion is whether the transistor is PNP or NPN.
- Select a replacement transistor of the same material: Most transistors are either silicon or germanium.
What is 2N5401 transistor?
The 2N5401 is a high voltage PNP transistor that can be used in a variety of general purpose electronic applications that are operating from 150V or below. It is often used in telephone circuits and simple switching applications or amplification on high voltage.
What is 2N5551 transistor?
The 2N5551 is an NPN amplifier Transistor with an amplification factor (hfe) of 80 when the collector current is 10mA. It also has decent switching characteristics (Transition frequency is 100MHz) hence can amplify low-level signals.
Are 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.
Which transistor can be used in place of 2n2222a?
The 2N2907 is an equally popular PNP transistor complementary to the 2N2222. The 2N3904 is an NPN transistor that can only switch one-third the current of the 2N2222 but has otherwise similar characteristics.
What type of transistor is a BC337?
The BC337 is an NPN transistor with a maximum gain of 630, commonly used in low power audio applications. It can also switch loads upto 45V and 800mA hence also used as general purpose transistor.
How do you test and match a transistor?
A common method of matching transistors is to use a fancy active current source to drive a stable current through the devices one at a time and to record the individual Vbe values. Then matched devices are selected based on the recorded values.
