Transistor BC147 - UK Vintage Radio Repair and Restoration Discussion Forum

bionicmerlin · 26th Apr 2019, 12:37 pm

Can someone tell me if there is a difference I want to replace a BC147 but I only have BC147B is this ok to use maybe there’s no difference
It’s used in a TV set in the field output side Andy

paulsherwin · 26th Apr 2019, 1:01 pm

It should be OK. B is the middle gain grouping.

Personally I wouldn't replace a lockfit with another lockfit though. A BC107/BC547 is electrically the same.

bionicmerlin · 26th Apr 2019, 8:39 pm

Thanks Paul that’s great. I know there are better replacements but as I have some of the BC107b to hand I will give them a try Andy

Maarten · 28th Apr 2019, 1:35 pm

BC107/BC147/BC237/BC407/BC547/BC847 are all the same internally.

26th Apr 2019, 12:37 pm	#1
bionicmerlin Heptode Join Date: May 2010 Location: Warminster, Wiltshire, UK. Posts: 682	Transistor BC147 Can someone tell me if there is a difference I want to replace a BC147 but I only have BC147B is this ok to use maybe there’s no difference It’s used in a TV set in the field output side Andy

26th Apr 2019, 1:01 pm	#2
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,947	Re: Transistor BC147 It should be OK. B is the middle gain grouping. Personally I wouldn't replace a lockfit with another lockfit though. A BC107/BC547 is electrically the same.

26th Apr 2019, 8:39 pm	#3
bionicmerlin Heptode Join Date: May 2010 Location: Warminster, Wiltshire, UK. Posts: 682	Re: Transistor BC147 Thanks Paul that’s great. I know there are better replacements but as I have some of the BC107b to hand I will give them a try Andy

28th Apr 2019, 1:35 pm	#4
Maarten Dekatron Join Date: Dec 2007 Location: Haarlem, Netherlands Posts: 4,199	Re: Transistor BC147 BC107/BC147/BC237/BC407/BC547/BC847 are all the same internally.