terranigma Member Joined 2007 2011-11-29 10:07 pm #1 2011-11-29 10:07 pm #1 Hi, Have you any idea of which manufacturer depicts this "H" on transistors? Thanks. Attachments H-BD140.JPG 11.8 KB · Views: 123 Last edited: 2011-11-29 10:12 pm