Matched 2SK170-BL Jfets?

[HighFidelityGuy]

Hi,

Does anyone know where I can get matched pairs of 2SK170-BL Jfets in the UK? I'm trying to avoid paying international shipping fees.

Cheers. :cool:

[Reid Malenfant]

I'll keep my eyes open for you as i'm often hunting for components ;) However, these are very rare parts & you are more likely to find horse feathers here in the UK :lol:

Matched is even worse :eek:

[HighFidelityGuy]

Thanks Mark. Why is nothing ever simple? :doh:

I need these for a buffer I'm hoping to build. Specifically THIS (http://www.diyaudio.com/forums/blogs/tea-bag/296-salas-dcb1-blue-edition.html) one. It only mentions using 2SK170-BL but as the design is based on the Pass B1, I should be able to use either the LSK170 or 2SK370 as an alternative. Perhaps other similar Jfets could also be substituted. More info HERE (http://www.passdiy.com/pdf/B1%20Buffer%20Preamp.pdf).

The PCB supplier can't supply matched Jfets but he's told me about a couple of people that do them. I presume they are in the US though.

Out of the above models, I can only find 2SK370 in stock in the UK at Farnell. However I don't know which of the 8 versions I need or how to match them. Any ideas? They also seem to be mosfets which doesn't seem right. :scratch:

Cheers.

[Reid Malenfant]

Hi Dave, the only thing i can suggest right now is that you take a look here (http://www.diyaudio.com/forums/vendors-bazaar/163776-zhou-fangs-sales-thread-parts-you-always-wanted-but-hard-get-they-here.html) ;)

Looks like you'll be able to buy them matched & the bl version, unfortunately not in the UK though :scratch:

E2A:- looks like you may already know about them :doh:

[leo]

If your struggling to find matched pairs you should be able to use unmatched ones too , fit the one with lowest IDSS in the current source position

[HighFidelityGuy]

Thanks for the link Mark, that wasn't one of the sellers I was aware of.

Thanks for the info Leo. I'll keep that as my backup plan.

There seems to be a Chinese seller on eBay that sells matched sets of 4 or 8. He has BL and V versions. Does anyone know what the difference is?

Cheers. :)

[leo]

Highest rated IDSS of V version is higher than BL

[tubehunter]

hi,
I have some of these left over from a pass b1 I 've built. How many do you need? Or for that matter anybody want a nice prototype Nelson Pass B1 preamp in an Acrylic and Iroko case, one input with a 24 stepped ladder pot regulated power supply with toroidal transformer.

Duncan

[Puffin]

hi,
I have some of these left over from a pass b1 I 've built. How many do you need? Or for that matter anybody want a nice prototype Nelson Pass B1 preamp in an Acrylic and Iroko case, one input with a 24 stepped ladder pot regulated power supply with toroidal transformer.

Duncan

How much ?

[HighFidelityGuy]

Highest rated IDSS of V version is higher than BL

Thanks Leo. I did a bit of digging and it sounds like the BL version is preferred for B1 based project so I'll stick with that. :)


hi,
I have some of these left over from a pass b1 I 've built. How many do you need? Or for that matter anybody want a nice prototype Nelson Pass B1 preamp in an Acrylic and Iroko case, one input with a 24 stepped ladder pot regulated power supply with toroidal transformer.

Duncan

Hi Duncan. I preferably need 4 matched 2SK170-BL or if yours aren't matched I guess I'll need more so I can match them. Unless you can match them? Let me know what you can offer and at price. Could you also PM me a price for your B1 as well? Cheers. :cool:

[tubehunter]

Hi mark,

I've put the b1 add in the for sale section just in case you didn't want it.
I will sort out the jfets you can have them buckshe as I only have 4.