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Toshiba 2sk370 and  2sj108
Toshiba 2sk370 and  2sj108
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Old 28th May 2007, 03:33 PM   #11
Charles Hansen is offline Charles Hansen
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You guys are going to a lot of trouble for nothing. The Japanese transistor numbering system is different from the US system. With the Japanese system, the exact same part in a different package is given a different number.

The 2SJ108 is the EXACT SAME PART as the much more readily available 2SJ74.

The 2SK370 is THE EXACT SAME PART as the much more readily available 2SK170.

The only difference is the package. The hard-to-get versions are in a smaller physical package and will only dissipate 200 mW. The easy-to-get versions are in a standard TO-92 package and will dissipate 400 mW.
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Old 13th June 2007, 06:51 AM   #12
jacco vermeulen is offline jacco vermeulen  Netherlands
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Mr Hansen,

nice to see you pop up again, welcome back.
Wishing you a less bumpier ride for at least a decade.
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Old 13th June 2007, 10:13 AM   #13
korben69 is offline korben69  France
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Nice to read your input Mr HANSEN, many thank's for it.
You're right we were in trouble for nothing.
BTW can your remark about 2SJ108/2SJ74 and 2SK370/2SK170 be applied to 2SJ109-BL and 2SK389-BL ?
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Old 13th June 2007, 11:51 AM   #14
jacco vermeulen is offline jacco vermeulen  Netherlands
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Korben,

look up the datasheets of the 2SK170/2SK370/2SK389.
Parameters of the 2SK170 and 2SK370 are identical, except dissipation.
Nearly all parameters of the 2SK389 are different=different device
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Old 13th June 2007, 05:46 PM   #15
Charles Hansen is offline Charles Hansen
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Quote:
Originally posted by jacco vermeulen
Mr Hansen,

nice to see you pop up again, welcome back.
Wishing you a less bumpier ride for at least a decade.
Thank you for the kind wishes. I am still in a wheelchair with a great deal of pain. I am working from my house, but only part-time. I am starting a new therapy which is not widely used in the US, but more commonly so in Europe, called Hyperbaric Oxygen Therapy (HBOT). It works miracles with brain injuries (traumatic brain injury, stroke, cerebral palsy, et cetera). It's not so clear that it will help with my spinal cord injury, but it is worth trying.

I haven't been posting so much lately. About a year ago there were some disagreements about what posts were appropriate and what posts weren't. Many of my colleagues were banished. I escaped that fate, but my posts must be approved by a moderator before they are published.
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Old 13th June 2007, 08:17 PM   #16
anatech is offline anatech  Canada
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Toshiba 2sk370 and  2sj108
Hi Charles,
I'm very sorry to hear of your accident. I wish you the best here.

We are in a similar situation, but I'm not so bad. I can well imagine being stuck in a wheelchair does not help your pain. I can't stay sitting or standing very long. They finally put me on Oxycontin with perq's for breakthrough pain. It just dulls the pain but I can at least function a little.

It sounds like the Hyperbaric Oxygen Therapy would have helped. Oh well.

Are you expected to recover fully (I hope)?

Best wishes and a warm welcome back.

-Chris
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Old 13th June 2007, 09:07 PM   #17
jacco vermeulen is offline jacco vermeulen  Netherlands
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Mr Hansen,

a few overhere are missing the presence of another of your professional collegues for the last couple of weeks.
Probably a lot of the same types who figured 2 decades ago it would be nice to have a chance to get to talk to a designer of one of few loudspeakers which are able to keep up to pace with an ESL.
What's to say, untill i actively blended in this club i wasn't exactly sure what virtual reality was, now i do.

I also have a membership during life pass of the global society of the ex-comatose, damaged nerves and spinal cord types, akfb formerly heavily into wheelchairs, crutches and 24/7 pill swallowing for a jiffy.
24-hour pains drain a lot of energy, would be quite a bummer without medication.
It's my philosophy that smart ones are generally stubborn people, and being stubborn makes a difference.
I've just asked mrs downstairs about HBOT, she's an expert in renovation work, there's indeed also some experimentation with HBOT going on in these parts.
The new thermaltrack design is overwhelming, btw.
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Old 13th June 2007, 09:12 PM   #18
anatech is offline anatech  Canada
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Hi Jacco,
Too many of us around here. Is this place jinxed by chance?

It takes a stubborn person to go their own way and design anything. It also takes a stubborn person to recover from an accident. I didn't know you were also injured Jacco. Wishing you the best sir.

-Chris
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Old 13th June 2007, 09:18 PM   #19
jacco vermeulen is offline jacco vermeulen  Netherlands
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Chris,

my leg nerves will not really enjoy Colorado winter slope temperatures but other than that i'm a true animal.
I already used to wear thermal underwear during cross country skiing, so no big deal.
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Old 13th June 2007, 09:20 PM   #20
anatech is offline anatech  Canada
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Hi Jacco,
Good for you!

My answer is easier. I don't like skiing! I hate snow in general actually. I call it "evil white sh - (you know)".

-Chris
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