Two Motorola Transistors Became the Default NPNs

Just so long as we remember to check it'll fit the need. I recently inherited a design that used some parts from the 70s and they were not up to the task. Drop-out voltages too high, gate threshold voltages too high; whatever spec could be violated was. Just because it's been used for 50 years doesn't mean it's the right part for the job

This is an interesting article on how open licensing can help ensure viability long after the original designer has left the game.

BC547? 337? I think they are Texas devices, much popular too.