Wrong heatsink for TO-39

murat · 19th January 2005, 02:37 PM

Hi,

I started to build my Leach amp. I thought the transistors 2N3439 and 2N5416 were TO-5 and I put them into TO-5 heatsinks shown here (please see the first one on top of the page) :

heatsink

2N3439 and 2N5416 are actually TO-39 and they fit very very tight into the heatsink. Can the case handle this? I even cannot take them out. Thanks,

Murat

maylar · 19th January 2005, 06:50 PM

The nominal diameter of both TO-39 and TO-5 is the same (.325"). Just pry them apart a bit with a screwdriver..

19th January 2005, 02:37 PM	#1
murat diyAudio Member Join Date: Nov 2004 Location: knoxville tn	Wrong heatsink for TO-39 Hi, I started to build my Leach amp. I thought the transistors 2N3439 and 2N5416 were TO-5 and I put them into TO-5 heatsinks shown here (please see the first one on top of the page) : heatsink 2N3439 and 2N5416 are actually TO-39 and they fit very very tight into the heatsink. Can the case handle this? I even cannot take them out. Thanks, Murat

19th January 2005, 06:50 PM	#2
maylar diyAudio Member Join Date: Jun 2003 Location: Connecticut	The nominal diameter of both TO-39 and TO-5 is the same (.325"). Just pry them apart a bit with a screwdriver.. __________________ dave

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