Here is a list of 4 Transistors categories. It encompasses a wide range including phototransistors, transistor arrays, power transistors, bipolar transistors, etc. You can search for an overview, principle, and usage of each category, as well as find manufacturers and distributors.
*This ranking is solely among the companies registered with Metoree, sorted by the number of employees. Please use this as a rough guide to understand their scale.