Free images results:

Transistor pictures, stock photos and images


Radio Stock Photo
Author: Aravindteki
Circuit Stock Photography
Author: Rbouwman

Also, here are some commercial RF-licensed images that match your search criteria:  
Transistor Royalty Free Stock Photo
Author: Dnkart

Explore more commercial options: More Transistor Stock Illustrations & Vectors | More Transistor Stock Video Footage