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.

[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

Matched is even worse

[HighFidelityGuy]

Thanks Mark. Why is nothing ever simple?

I need these for a buffer I'm hoping to build. Specifically THIS 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.

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.

Cheers.

[Reid Malenfant]

Hi Dave, the only thing i can suggest right now is that you take a look here

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

E2A:- looks like you may already know about them

[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.