There is no difference they perform the same functions.
Generally upstream is closer to the positive (+) voltage source. In the case of an NPN transistor upstream of the transistor is the part of the circuit from (+) to the NPN collector pin. Downstream of the transistor is from the NPN emitter pin to the ground / sink / negative (-) terminal.
What is a 2N2369 transistor.It's an npn switching transistor.
is zero
BT169 is neither an NPN nor a PNP transistor. BT169 is a thyristor, otherwise known as a silicon controlled rectifier.
To know if a transistor is PNP or an NPN,the following should be verified:For a PNP transistor, the base-collector junction is forward biased while the base-emitter junction is reversed biased.For an NPN transistor, the base-emitter junction is forward biased while the base -collector junction is reversed biased.
NPN and PNP are transistor types. The difference in the way the layers of semiconductor material are doped with impurities.
Generally upstream is closer to the positive (+) voltage source. In the case of an NPN transistor upstream of the transistor is the part of the circuit from (+) to the NPN collector pin. Downstream of the transistor is from the NPN emitter pin to the ground / sink / negative (-) terminal.
NPN and PNP transistors function in essentially the same way. The power supply polarities are simply reversed for each type. The only major difference between the two types is that the NPN transistor has a higher frequency response than the PNP-because electron flow is faster than hole flow. Therefore high frequency applications will utilize NPN transistors.
== ==
What is a 2N2369 transistor.It's an npn switching transistor.
It is an npn power transistor
npn is preferred to pnp since n-doping can be pushed to higher values without damaging silicon lattice. due to this fact, doped regions can be less resistive. difference between npn and pnp is becoming smaller and smaller, tho.
2N2222
is zero
BT169 is neither an NPN nor a PNP transistor. BT169 is a thyristor, otherwise known as a silicon controlled rectifier.
Application is asking for an NPN#
ITS AN NPN TRANSISTOR , GENERALLY USE AS A SWITCH GENREALLY IN COMMON EMITTER CONFIGURATON