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Pinout Issues with 2N2222, PN2222, P2N2222 transistors
Pinout Issues with 2N2222, PN2222, P2N2222 transistors
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Old 26th May 2021, 01:32 PM   #1
jackinnj is offline jackinnj  United States
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Pinout Issues with 2N2222, PN2222, P2N2222 transistors
Default Pinout Issues with 2N2222, PN2222, P2N2222 transistors

The May 2021 issue of QST has a note that some variants of the 2N2222 have varying pinouts. A good idea to check before soldering in place.
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Old 26th May 2021, 01:50 PM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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It is a variant of the To-92 case.
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Old 26th May 2021, 02:03 PM   #3
wg_ski is offline wg_ski  United States
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I’ve never heard of a plastic 2222 being anything other than EBC. But anything is possible as I haven’t tried every possible source for them. Some manufacturers will do CBE for TO-92. In the metal can, the tab is the emitter so you will always know. If in doubt, put it on hFE test. Reverse hFE is low.

Some former Jap types now made by Fairchild/ON (or at least were 6 months ago) are available in both EBC and ECB. Different suffix on the part #. I think those types are all on the chopping block. Some are probably gone already.
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Old 26th May 2021, 02:06 PM   #4
davidsrsb is offline davidsrsb  Malaysia
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A 2N2222A was in metal TO-18, so the left hand picture is odd
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