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How To remember the direction of PNP and NPN Transistor. One of the Easiest way.

 How To remember the direction of PNP and NPN Transistor. One of the Easiest way.
The Easiest way to remember the direction of PNP and NPN Transistor.
                                                       Click image to enlarge.
remember the direction of NPN and PNP Transistors

PNP = Pointed In
NPN = Not Pointed In.
if you think that is little bit complex, then try this one..it’s more simple.
                                                                   Click image to enlarge.

How To remember the direction of PNP and NPN Transistor.

PNP                               NPN
P = Points                      N = Never
N = iN                            P = Points
P = Permanently            N = iN

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10 comments

  1. Direction of NPN should be reversed in 2nd picture

  2. good<br />

  3. OK How about the arrow ALWAYS points to the negative charged region of ALL semiconductors. Conventional current flow geeks like engineers. Well then reverse it and think backwards. The arrow points to the negative region. Period

  4. The second picture is incorrect.

  5. THANK YOU

  6. Hello sir,<br />I have a doubt,may you give answer?<br />what is the change in eddy current loss with freqency in 3 ph. Induction motor?

  7. In first picture, Emitter and Collector should be reversed. I think, terminal having ARROW is always Emitter in both PNP and NPN transister.

  8. Magnus Emenuga

    how do we note the emitters;base and collector of a PNP and npn

  9. nice trick

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