2018-07-26 Transistors, ECG, Motorola HEP Line, etc.

From FB group Building Transistor Radios

Wayne Leake
Yeah, the 2N3904 is E B C, THE ‘945 is E C B. Watch out the leads don’t touch and short. 😝

I have the Moto HEP catalogs, if you need to find out what it’s equivalent to.

When National Semiconductor came out with their catalogs they gave the ‘process’ that a certain transistor was selected from. So I could see that the 2N4124 was from the same process as the 2N3904. So I knew that the 2N3904 was a higher voltage version of a 2N4124.

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