JFET matching Jig

[meanie]

Received my boards, thanks Kannan !

 

[kannan_s]

Hi All
i have not heard from anyone not receiving it ( among the last US distribution list). I am planning to contact only US based wait list today and send out request for payment. I will wait one more day if any one in the shipped list have not received to respond - final call. I have checked the tracking and it shows it was delivered.
thanks
kannan

 

[kannan_s]

Sent you a PM - please check and reply
kannan

Kannan_s: Wait list for U.S.:


SynctronX - 2 boards.

Once again SyncTronx- i need your quick reply to my PM as I cannot keep holding the spare PCBs. If i do not hear back I will offer those to the next one in line as there are more requests than the available PCB's
thanks
kannan

 

[OtisCampbell]

Received my board, thanks!

 

[Russellc]

If possible, Add me to wait list please!

Russellc

 

[Pars]

Glad that someone is actually into making something!!😀

So that is just a package designation for original Toshiba dual JFETS.And no such socket is available anywhere that I am aware of.

So what I did was get these two parts (Its in the mouser list linked at the first page)

90147-1104

90147-1103 and solder them at the 4 pin and 3 pin positions and use a drop of superglue between them. Don't forget to hold them together tight while glue is curing, with a clamp.

The dual jfets will slide in without any difficulty.

DON'T FORGET ,if you don't hold them together they may get pushed to the side by glue while curing.

However ,You do not need the socket or dual switch for board to work with non dual jfets.

I will add this description in first page.

I’ve used these zig zag sockets in the past for stuff like 2SJ109 / 2SK389. You have to cut them, but they work great.
410-93-220-10-001000 Mill-Max Manufacturing Corp. | Connectors, Interconnects | DigiKey

 

[ppap64]

Got my boards now....Kannan rocks ! Thanks !!

 

[Pars]

Same here, please add me to the wait list:

Pars 1

Thanks!

 

[shattered_dream]

Can you please add me to the wait list

 

[SyncTronX]

Switch question,


There are two different switches in the BOM,
The first mouser has stock.
The 2nd, mouser is back ordered.


I've seen a pic of one board with the metal vertical slide

switch, but the black plastic vertical slide switch was back ordered.


Does it only need either swich?

 

[kinku]

The one mouser has stock is needed. The one back ordered is needed only if you are planning to match dual Jfets.

 

[Nikon1975]

My take

 

[BigE]

Please add me to the wait list. Prefer assembled if possible.
Thank you!

 

[kinku]

My take

NICe work Nikon, please share construction details.

 

[Nikon1975]

NICe work Nikon, please share construction details.

Only the box is fancy, the rest is just cabling. I put two leds in reverse polarity so it’s clear what polarity I am using. I was thinking to add a switch to change the polarity and an internal regulator to improve consistency. Also I added the socket to be more gentle on the jfet pins.

D

 

[SyncTronX]

Anyone have any of the ultra .1% 15PPM resistors?
Seems Mouser wants $174.00 for them, in a 1000 reel.


1 per board, x2...and probably a few for spares.


PM me please.

 

[astromo]

Please add me to the wait list. Prefer assembled if possible.
Thank you!

Same here please.


Bare board, as it comes. Thanks.

 

[astromo]

Anyone have any of the ultra .1% 15PPM resistors?
Seems Mouser wants $174.00 for them, in a 1000 reel.

1 per board, x2...and probably a few for spares.

PM me please.

Give octopart a look, there's more than Mouser out there to supply your needs.

 

[Jim50hertz]

I’d like to be added to the wait list too, bare board is fine here

 

[KevinHeem]

Purchased early 2018