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Old 14th March 2009, 09:53 AM   #1
pdul is offline pdul  Denmark
diyAudio Member
Join Date: Jan 2009
Location: Copenhagen
Default Mje243/253

I have just bought a handfull of MJE243/253 from a UK supplier convinced that it was ON semi. that produces it; But surprisingly it says isc. on the transistors which is a Chinese company.
Does anybody know the quality of those?
Is it compairable to the original?
Is it worth using at all.?
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Old 27th March 2009, 08:02 AM   #2
diyAudio Member
Join Date: Jun 2008
I had tried some devices from ISC and found them to be a disaster waiting to happen. Though they worked, they got extremely hot (at about 10% of their ratings). A simple change to ONSEMI devices got the amp working well.
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