GB 2SK3497/2SJ618 for EUVL F5X or other projects

[barmanekm]

Hello guys,
If possible I would also like to buy 2x(4x2sk3497) and 2x(4x2sj618). I need mainly N-N and P-P matching. Can add myself to the spreadsheet? Is it still possible or all mosfets are already gone... ?

 

[pchw]

I should have a couple match sets (within 5mv) left. Please let me check to see I still have the <= 2mv left. Will update you after I package for those who are on the list.

Thanks!!

 

[pchw]

Due to the form of the Keratherm pads come:

TO-247 -> 4 pads per row
TO-220-4 -> 7 pads per row

It is a little risky to cut the tap in between 2 pads. So, I am going to round everyone's order to a multiple of 4 for TO-247 and multiple of 7 for TO-220-4. I apologize to this change, but I really don't want to ruin the pads as they are really delicate. In most of the cases, the increase is less than $3.

Thanks!!

 

[pchw]

I got a couple inquiries on any matched mosfet sets left.
Here are what I have left:
- 1 set, N-N and P-P matched to Vgs 2mv.
- 1 set, N-N at Vgs 1mv, P-P at Vgs 3mv.
- 2 sets, N-N at Vgs 3mv, P-P at Vgs 3mv.
- 1 set, N-N at Vgs 2mv, P-P at Vgs 5mv.
- 1 set, N-N at Vgs 3mv, P-P at Vgs 4mv.

I also have maybe another set that is at around Vgs 15mv - 20mv which are still good for the F5X regulator.

The order of the members who asked are as following:
- Barmanekm
- lloop9
Barmanekm, I will save the first set for you for 2 days.
lloop9, you will have the 2nd set, but if Barmanekm passes, you will be bubbled up to have the first set.

If I don't hear from any of you, then anyone can pick any set from the above list.

Thanks!!

 

[lloop9]

Thanks Fred, for putting me in on the list. I'm happy with your arrangement.

cheers!

 

[barmanekm]

Thanks pchw, I need 3 or 4 sets. Total: 6 or 8 N and P devices.
Can you tell me if there are any sets matched to at least 50mV between N SETS, and 50mV between P SETS? If yes I am taking 3 or 4 sets. It Depends on how many will be left.

 

[barmanekm]

I want to use them for class A power amplifier output...

 

[pchw]

Hi Barkmanekm,

I will have to open the bags to read the value but will check for you.

If memory serves me right, there will be such match for the N's for sure.
The wide range is the P's somehow have rather even distribution in a range of 2V ...
Will report later today.

Thanks,

 

[pchw]

It didn't take long to find, 4 sets that I posted are actually within 50mv.
See the Vgs of each set:

- 1 set, N-N and P-P matched to Vgs 2mv. N=2.501, 2.503; P=2.720, 2.722
- 1 set, N-N at Vgs 3mv, P-P at Vgs 3mv. N=2.512, 2.515; P=2.706, 2.709
- 1 set, N-N at Vgs 2mv, P-P at Vgs 5mv. N=2.498, 2.500, P=2.696, 2.701
- 1 set, N-N at Vgs 3mv, P-P at Vgs 4mv. N=2.487, 2.490, P=2.715, 2.719

N range = 2.487 - 2.515 (<= 28mv)
P range = 2.696 - 2.722 (<= 26mv)

Not sure your circuitry, but keep in mind, I matched them with the F5X regulator in mind. They were matched at 4A.

Put them under your name?

Thanks,

 

[barmanekm]

Hi, thx. Please put them under my name . I am buying it.

 

[pchw]

Added both you and Andrew to the Google spreadsheet.

Once I finish matching the 2SK2013/2SJ313. I will post the total and request payment.

Thanks!!

 

[johnwmclean]

Perfect!

Thanks guys.

 

[pchw]

Payment info updated, please check.

Hi all,

I have updated the speadsheet to include the total. Please check for correctness. If it looks right, please kindly pay to may paypal account as in the grand total heading.

The detail:

1. Only the total of the members who are also in PRP GB are calculated.
For ship direct, I plan to ship flat rate priority mail with confirmation
for US. For international, I will check the ship rate and post later.
2. For those are in EU and shipped with PRP, I have added the VAT so that
I can pass the money to Heinz1 who will receive the bulk package.
3. Heinz1, I subtracted the VAT from your total before adding the PP fee.
Please double check.
4. Nic, per our PM, I will ship direct to you; therefore, I didn't add VAT to
your total. I subtracted my PRP from the total and only applied the PP
fee to the balance. Please check. We will add the shipping once we
finalize the shipping method.
5. When you make payment to PP, please include your diyaudio id so that
I can update the payment status accordingly.
6. For those also buy the 2sk2013/2sj313 from me. I added the amount
as well. FWIW, the quad and the double are within 2mv, and even the
triples are within 3mv.
7. To all who purchase fets from me, the measurements are written on
fets or on a tape.

Thanks!!

 

[Skip Pack]

Fred,

For those of us who have ordered/requested only the
2SK2013/2SJ313 pairs/quads -- will you do a separate
sheet? Eager to make sure I'm on track. Also, will those
be coming from a another shipment?

thanks,

Skip

 

[pchw]

Hi Skip, Rolandong, and jcon2,

I will send PM to you all separately.

Thanks!!

 

[johnwmclean]

Fred,

Payment sent,
Many Thanks.

 

[buzzforb]

Pchw,
If I send the money, can you go ahead and put my stuff in the mail.

 

[pchw]

Pchw,
If I send the money, can you go ahead and put my stuff in the mail.

Absolutely, how about a flat rate priority box with delivery confirmation?
If so, I will compute the total.

Thanks!!

 

[buzzforb]

That would be great.

 

[pmchoong]

Hi Fred,

Payment send.