Well, there have been thousands of transistors made and (commercial) transistors date from the early to mid 1950s. For their history, here's an interesting linkThis is one of many aspects of transistors that I find baffling! Thanks for confirming that it really isn't logical (I thought I was being daft for not getting it).every possible combination of the three leads exists... not all manufacturers use the same lead out
The early European transistors were numbered in the "OC" series system. In the U.S.A. transistors used the JEDEC numbering system. As do diodes.
Mark
Statistics: Posted by 1024MAK — Sun Oct 12, 2025 12:46 am