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-   -   2SK1530+2SJ201 (http://www.diyaudio.com/forums/parts/237953-2sk1530-2sj201.html)

Jallhalla 20th June 2013 04:06 PM

2SK1530+2SJ201
 
Hi,

Does anyone have any experience with this vendors mosfets?

If they are fake, who has them?


Thanks!

NicMac 20th June 2013 04:48 PM

I don't know about that vendor, but you might want to have a look at the stuff in my signature;)

Jallhalla 20th June 2013 11:39 PM

Thats not even remotely funny.

..unless you are able to find two more pairs of those type 1 transistors, of course. :rolleyes:

I understand that you are sold out, but please let me know!

NicMac 21st June 2013 04:13 AM

I was not trying to be funny - just to help:)

If you need Vgs matched N and P devices you might also check what member Blues or Zhoufang have left.

Not really the same thing, but certainly genuine devices.

EUVL 21st June 2013 05:56 AM

> Does anyone have any experience with this vendors mosfets?

They don't even define what is meant by matched.

At what temperature ?
Single point or curve traced ?
Over what current range ?
To what tolerance ?
NNPP match or just NN-PP match ?

As already extensively published, all the above have a significant factor on matching and especially on matching yield.

> ..unless you are able to find two more pairs of those type 1 transistors, of course.

I don't think anyone else can / will provide those for you (tight NNPP match under working conditions).
You might, at best, get single point match at room temperature.


Just my 2 cents,
Patrick

kgrlee 21st June 2013 07:26 AM

EKV MOSFET models for these?
 
Anyone know where to get good EKV SPICE models for these devices?

I think Bob Cordell had some but he's misplaced them.

Jallhalla 21st June 2013 08:59 AM

Quote:

Originally Posted by NicMac (Post 3533550)
I was not trying to be funny - just to help:)

If you need Vgs matched N and P devices you might also check what member Blues or Zhoufang have left.

Not really the same thing, but certainly genuine devices.

Just trying to be funny myself! :)

I know the matching might not be optimal, but Im out to buy regular devices for my f5 first of all. NicMac brough up the matching. ;)

Ill send blues a pm.

AndrewT 22nd June 2013 05:20 PM

The F5 uses a single pair of N & P, these do not need to be matched N to P.

A stereo set requires two pair, these do not need to be matched, neither N to P, nor N to N or P to P.

tinitus 22nd June 2013 06:12 PM

nah, but some kind of matching might help to ensure they are genuine

looks like its become a risky affair to buy anything these days

NicMac 22nd June 2013 06:50 PM

Quote:

Originally Posted by AndrewT (Post 3535261)
The F5 uses a single pair of N & P, these do not need to be matched N to P.

A stereo set requires two pair, these do not need to be matched, neither N to P, nor N to N or P to P.

Is that really so? No effect on distortion whatsoever?
Certainly, a channel mismatch may/will lead to channel imbalance. No?
Of course this might be corrected by moving one speaker 5 cm:D


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