UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Roberts RT7

Station X · 30th Apr 2009, 6:25 pm

Regarding the leads of the ORIGINAL transistors. According to "Towers" which is the bible on the subject OC81s came in a X02 package with an LO3 lead out.

Your picture in post 87 shows an X02 package all right. However with an LO3 leadout the collector should have a bigger gap between it and the base than there is between the emitter and the base. It's difficult to tell from your picture, but it appears that the bigger gap is adjacent to the black lead which would make that the collector. Can you confirm which is the bigger gap please.

30th Apr 2009, 6:25 pm	#92
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,288	Re: Roberts RT7 - problem Regarding the leads of the ORIGINAL transistors. According to "Towers" which is the bible on the subject OC81s came in a X02 package with an LO3 lead out. Your picture in post 87 shows an X02 package all right. However with an LO3 leadout the collector should have a bigger gap between it and the base than there is between the emitter and the base. It's difficult to tell from your picture, but it appears that the bigger gap is adjacent to the black lead which would make that the collector. Can you confirm which is the bigger gap please. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.