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Old 13th December 2007, 08:49 PM   #1
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Default NJL0281 and NJL0302

where to find them...
digikey has a limit of minimum 25 pieces... it is to much for me.... Also Onsemi will not send to Croatia....
is there any other source for those transistors...?
thanks in advance
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Old 14th December 2007, 08:33 AM   #2
MaxS is offline MaxS  France
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Zdravo !

I've made a quick look around the web, so the results of my search are not good for you :

Elfa -> NO
Dalbani -> NO
Farnell -> NO
Rapid -> NO

Sorry.

Max
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Ca marche pas ! Tu ne l' as pas branché non plus ....
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Old 14th December 2007, 08:53 AM   #3
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Zdravo to You too.... nice....

that is what i am talking about...hard to find.... only digikey and onsemi directly and neither of them is suitable for me... and i would like to use those two transistors better than anything - because i have allready finished project from Roender and no need to modify it.......the boards are very nice and clean ....
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Old 14th December 2007, 11:15 AM   #4
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Why not use the NJL3281D and NJL1302D? Shouldn't have to buy 25 of them.
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Old 14th December 2007, 12:01 PM   #5
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"because of Cob (400pF vs 600pF) and linearity".....

that is why i would like to find these two guys instead of anything else....
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Old 14th December 2007, 12:47 PM   #6
roender is offline roender  Romania
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Sparkle

You could use, without much worries, NJL3281/1302 if you can't find the "zero" version.

Mihai
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Old 14th December 2007, 04:16 PM   #7
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o.k. - thanks

this i can find on digikey.....
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Old 15th December 2007, 04:12 AM   #8
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Quote:
Originally posted by sparkle
"because of Cob (400pF vs 600pF) and linearity".....
I'm not so sure that this is real or just an error in the data sheet. I believe that both parts use the same die inside and the only difference is the size of the package. One has the larger TO-264 package and the other has the smaller TO-247 package.
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Old 15th December 2007, 06:27 AM   #9
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interesting......thnx for the info
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Old 15th December 2007, 07:12 AM   #10
roender is offline roender  Romania
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Quote:
Originally posted by Charles Hansen


I'm not so sure that this is real or just an error in the data sheet. I believe that both parts use the same die inside and the only difference is the size of the package. One has the larger TO-264 package and the other has the smaller TO-247 package.
Mr. Hansen,

Both parts use the same TO-246, 5 lead case 340AA but the chip inside is very different ... only the thermal track diode is the same.
http://www.diyaudio.com/forums/attac...amp=1194858226
I've try both njl3281/1302 and njl0281/0302 in my amp. The "zero"version sound more smooth, more precise on highs, with no harshiness or sibilance. There is nothing wrong with the other version (3281/1302), but I prefer the "zero" version.
This is the schematic.
RMI-FC100, a single stage audio power amplifier
Regarding an old discussion about thermal stabilization method, it is not so difficult to implement a very simple method once you know the TC of the diodes and have all output stage transistors, including drivers and predrivers, on the same heatsink

Mihai
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File Type: jpg njl2.jpg (87.0 KB, 822 views)
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