File:Bipolar transistors Silicium based.jpg

Summary
https://commons.wikimedia.org/wiki/File:Bipolar_transistors_Silicium_based.jpg Description Bipolar transistors from about 1990's. From left; first two are low-power; the last three are able to transduce higher power with the right heat sinks. Date	11 March 2006 (original upload date) Source	No machine-readable source provided. Own work assumed (based on copyright claims). Author	No machine-readable author provided. Glenn assumed (based on copyright claims).