The TO-92 package is suitable for through-hole PCB assembly. The 2N3904’s PNP complementary type is 2N3906.

It’s a fair assumption that the majority of Hackaday readers will be used to working with electronic components, they are the life blood of so many of the projects featured here. In a lot of cases ...

In the ever-dynamic and fast-moving world of semiconductors, why do some old transistors like 2N3904 keep on going for decades? Bill Schweber takes a closer look at this remarkable premise while ...