2SK146 Dual JFET matched pair pinout - diyAudio
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Old 16th December 2011, 07:12 PM   #1
Jebem is offline Jebem  Portugal
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Smile 2SK146 Dual JFET matched pair pinout

Hi,

I have a few 2SK146 Toshiba dual jfet devices that I am planning to use to build an phono preamp.

However, I just realized that it seems impossible to find the pinout configuration anywhere...

Is anyone aware of that knowledge and able to share it in this site, please?

Thanks!
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Old 17th December 2011, 09:53 AM   #2
Jebem is offline Jebem  Portugal
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Well, after much digging around, I found this Japanese site, where pin-outs can be checked for 2SK146 dual JFET, and also the 2SK147 single JFET (the 2SK146 contains two 2SK147 in a single aluminum capsule, where one uses Series A pin-out and the other one uses series B pin-out, and in this way, both Drain and Source pins are located side by side):
2SK101-200

However, my Japanese is not good enough (cough, cough...), so I have used, guess what, our friend Google to translate one or another word:


芝 => Toshiba
2SK147のDualタイプ => Dual type 2SK147
SOURCE => ソー
GATE => ゲー
DRAIN => ドレイ

So, I came out with the following pin-out comfiguration for the 2SK146 dual JFET packages:


The top notch on the capsule will tell us where to find pin 1.

Any one can comment on this?
I hope to do some testing to find out the IDSS and Vp for my 2SK146 GR H2 devices soon..
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Old 17th December 2011, 10:08 AM   #3
Zen Mod is offline Zen Mod  Serbia
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ECA TDV sez :
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Old 17th December 2011, 10:14 AM   #4
Jebem is offline Jebem  Portugal
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Thank You so much, Zen Mod!
Nice tool of yours...
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Old 17th December 2011, 11:01 AM   #5
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Old 17th December 2011, 11:07 AM   #6
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Drain is marked with red dot. Though drain and source probably interchangable.
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Old 17th December 2011, 01:22 PM   #7
Jebem is offline Jebem  Portugal
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Great!
Thanks Jacco... and Thanks/Gracias/Obrigado Serra, for the 2SK146 datasheet showing the pin-out as well.
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Old 18th September 2014, 07:53 PM   #8
os12300 is offline os12300  Mexico
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Hi! for all, an thanks, for you help and information.
Thanks from Veracruz, México.
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