How's it going with your PCB, any chance you wlll make the gerbers available?Here is a pic of my layout so far...
Happy to post them. I have not had this Gerber fabricated or tested so look it over, if something needs to be changed then let me know.How's it going with your PCB, any chance you wlll make the gerbers available?
Attachments
Here is the P channel V-FET board. Again same disclaimers...not tested, fabricated. Let me know any changes/problems. I added a pad in the Drain routing of the MOSFET so possibly other types of mosfet packages may work. At least I think...
Attachments
Since I found some 2SJ18 in my stash I didn't know I had, I found this board created by @tom1066. I had it made up at jlcpcb.
There are a few notes to those who want to try it.
First, it works!
Second, the pads on the top of the board will short out to any conductive heatsink. So I used an extra mica pad here and mounted accordingly.
The caps are a bit small, so have to be careful of parts ordered, and the holes for the pot are a bit more stretched out so have to bend legs and suspend the pot above the board. The FETS and Souce resistor should ideally have a little more room here to breath, and they sit at the edge on my angle aluminum, and the other parts are pretty close. But beggars cannot be choosers. Unless Papa releases the gerbers for his, this is a working alternative.
There are a few notes to those who want to try it.
First, it works!
Second, the pads on the top of the board will short out to any conductive heatsink. So I used an extra mica pad here and mounted accordingly.
The caps are a bit small, so have to be careful of parts ordered, and the holes for the pot are a bit more stretched out so have to bend legs and suspend the pot above the board. The FETS and Souce resistor should ideally have a little more room here to breath, and they sit at the edge on my angle aluminum, and the other parts are pretty close. But beggars cannot be choosers. Unless Papa releases the gerbers for his, this is a working alternative.
Attachments
Ah, I understand, the Gerber assigns a hole with a pass-through to the other side. Just having a hole would have been the right thing, with an elaborate surrounding.Second, the pads on the top of the board will short out to any conductive heatsink. So I used an extra mica pad here and mounted accordingly.
--> Well, one can cut out those 4 round drain pads on that side with a sharp one (not a sharpie).
And it is easy to drill a second hole for the - of the big capacitor. A beggar needs to twist reality . . .
I also have some N-channel fets around looking for a use-case.
Last edited:
Can somebody please help me find 1pcs 2sk60?
Thank you and best regards.
Thank you and best regards.
No SK60, but I have 2SJ28 and 2SK82 parts...Can somebody please help me find 1pcs 2sk60?
I have a pair of the 2sj28 devices does the K33 after the part # refer
to the pinch off voltage ?
to the pinch off voltage ?
It's for grading....
See
See
Selling 2sk82/2sj28 pairs and 2sk63 . All are NOS
2sk82/2sj28 grade JE33 and KF33 85 USD/pair
2sk82/2sj28 both grade A55. Very very rare one.May be first batch and single die version. but not 100% sure about it. 110 USD/pair
small power 2sk63 Vfet 25 USD.
Shipping and paypal fees extra
2sk82/2sj28 grade JE33 and KF33 85 USD/pair
2sk82/2sj28 both grade A55. Very very rare one.May be first batch and single die version. but not 100% sure about it. 110 USD/pair
small power 2sk63 Vfet 25 USD.
Shipping and paypal fees extra
It doesn't look as though that is going to happen, but it shouldn't be too much effort to amend the @tom1066 PCB layout if the design files were made available?Unless Papa releases the gerbers for his....
You can buy aluminum angles or tees from metal stores.
Here is one store, and they have a location in Los Angeles: https://www.onlinemetals.com/en/buy/aluminum
They have angles and Bar-T-Bar(tees). Choose 0.25" thick and size and length of your choice, and 6063 grade. 6063 grade is softer so easier to drill.
Then drill to suit. A drill press is not necessary. I have drilled many holes in aluminum with a hand held drill.
Here is one store, and they have a location in Los Angeles: https://www.onlinemetals.com/en/buy/aluminum
They have angles and Bar-T-Bar(tees). Choose 0.25" thick and size and length of your choice, and 6063 grade. 6063 grade is softer so easier to drill.
Then drill to suit. A drill press is not necessary. I have drilled many holes in aluminum with a hand held drill.
If you don’t want to work the aluminum (though Ben’s recommendation is best),
Order some of these. Run flying leads if needed.
Order some of these. Run flying leads if needed.
Attachments
- Home
- Amplifiers
- Pass Labs
- DIY SONY VFETS pt 3 - Got VFETs?