Giveaway - SJEP120R100 pair

[elwood625]

He included his email address in the package containing the SITs, I sent him an email last week and the parts arrived yesterday.

 

[Zen Mod]

I did send Tomoaki's direct e-mail addy to numerous Greedy Boyz, either via PM or e-mail

I mean, didn't asked for permission to put it in public, so that way

 

[elwood625]

I didn't want to put it out public, pm me if you need his email address. Or better yet, I have four extras I don't need, pay my costs which are $23.76 each plus shipping to you.

 

[elwood625]

The four "extra" 2SK3497 MOSFET's are sold.

 

[Dennis Hui]

Elwood, I've never seen a 2sk3497 but that photo of the part from the UK seller shows a
package different from that in the datasheet (see page 1):

https://datasheet.octopart.com/2SK3497(F)-Toshiba-datasheet-13716251.pdf
The 2sk3497 is a low Vgs part. Did the other part from the UK seller test higher than the
ones you got from Tomo-san?

My guess is you have received broken and fake parts. Hopefully there is some recourse available.

 

[elwood625]

The UK sellers part tested at 4.4v and the six from watanabe-san tested at 1.7v. The second from the UK seller tested as two resistors. No recourse, the seller has amnesia all of a sudden, oh well, at least I didn't use them and damage the Semisouths.

 

[EUVL]

For those looking for 2SK3497's, see alternative devices at :
https://www.diyaudio.com/community/threads/first-watt-f8.358672/post-6872806
If you can wait, we may offer the remaining of our temperature-controlled, curve-tracer matched Semisouths, 2SK3497s and 2SJ74s 2nd half of 2022.
That is assuming we have time to finish matching our 2SK3497 stock.

Most of the Semisouths we have left are quads and twin pairs.
And we shall not split them, so they will be offered as such.


Patrick

 

[Studley]

I’m looking for the JFets to make an F2J (and the boards !). Anybody got some they can spare?

 

[codyt]

I do not, sorry. You might try a wanted post on the swap meet page.

 

[rhthatcher]

I finally got the opportunity to transplant my J2 clone boards into a chassis that can take the heat. This is an “upcycled” rawson Aleph 5 chassis. Now it’s a J2 clone with SLB power supply. The amp is running at 26.3V rails using a 400VA 22+22 Antek donut. Sound is fantastic!!! My Aleph 30 monos can take a break for a while.

 

[Ylab]

I finally got the opportunity to transplant my J2 clone boards into a chassis that can take the heat. This is an “upcycled” rawson Aleph 5 chassis. Now it’s a J2 clone with SLB power supply. The amp is running at 26.3V rails using a 400VA 22+22 Antek donut. Sound is fantastic!!! My Aleph 30 monos can take a break for a while.

Great build! What did you use for Q4? 2sk2497?

 

[Zen Mod]

 

[rhthatcher]

Great build! What did you use for Q4? 2sk2497?

IRFP240.

Prior build details are in Post #376. Amp boards are the same.

The difference now is chassis with bigger heatsinks and PSU. I wanted to try the SLB PSU. The SLB requires a higher voltage donut, so that's new, too.

 

[rhthatcher]

I will say it again. Thank you again CodyT and Nelson!!!!

 

[codyt]

Awesome build, Randy! I’ve been running a similar circuit with the same 22v transformer - definitely sounds like a heavenly 30 watts!