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> Identify Pinout Of Components
Posted: June 06, 2017 08:47 pm
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I have 2 components that I want to identify the pinout. First i have a SN7404, it has 14 pins. Looking at the chip with the writting on the top and the knotch on the left side in the middle of the case.

Pin 1 is at the bottom left
pin 8 is at the top right

Am I correct?

the other component is a transistor in a metal canister, a 2n2222A this canister has a knotch
I am holding the canister at its base with the pins sticking up and the knotch is the furthest from my fingers. Is this an NPN or a PNP transistor?
1 3

What is pin 1 E,B,C
What is pin 2 E,B,C
What is pin 3 E,B,C

Thank you in advance for your help.

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Posted: June 06, 2017 10:09 pm
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If in doubt, RTFDS. wink.gif

You've got the 7404 spot on:
Looking down at the top, the pins are as you describe.


E is nearest the flag. smile.gif


Answering questions is a tricky subject to practice. Not due to the difficulty of formulating or locating answers, but due to the human inability of asking the right questions; a skill that, were one to possess, would put them in the "answering" category.
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