MJL1302 and MJL3281 best driver transistors - Page 4

jaycee · 31st December 2012, 12:29 AM

Pretty much all of the good old TO-126 parts for VAS are now obsolete. Their mainstream purpose was CRT drivers, and this role is now obsolete by the fact that CRT is obsolete, and before that, they were made obsolete by CRT driver IC's such as LM2470. There's pretty much only Fairchilds KSA1381/KSC3503, and they are becoming a pain to get. I'll be willing to bet Fairchild discontinue them soon, too.

SMD parts are inevitable in this hobby I think. Fortunately they are not all microscopic and impossible to use. SOT223 isn't that small. It's not impossible to heatsink them.

Telstar · 31st December 2012, 08:43 AM

Linesource, nice amp

Do you mind sharing the schematic , esp of the protection?

Smiley 09 · 31st December 2012, 09:14 AM

Quote:

Originally Posted by Telstar

Linesource, nice amp

Do you mind sharing the schematic , esp of the protection?

+1

31st December 2012, 08:43 AM	#32
Telstar diyAudio Member Join Date: Dec 2007 Location: Italy	Linesource, nice amp Do you mind sharing the schematic , esp of the protection? __________________ "The total harmonic distortion is not a measure of the degree of distastefulness to the listener and it is recommended that its use should be discontinued." D. Masa, 1938

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31st December 2012, 12:29 AM	#31
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Pretty much all of the good old TO-126 parts for VAS are now obsolete. Their mainstream purpose was CRT drivers, and this role is now obsolete by the fact that CRT is obsolete, and before that, they were made obsolete by CRT driver IC's such as LM2470. There's pretty much only Fairchilds KSA1381/KSC3503, and they are becoming a pain to get. I'll be willing to bet Fairchild discontinue them soon, too. SMD parts are inevitable in this hobby I think. Fortunately they are not all microscopic and impossible to use. SOT223 isn't that small. It's not impossible to heatsink them.