That's the hybrid containing the six microscopic Schottky diodes for an S-4 sampling head. Is there any source for a replacement, or is there someone who has the tools to replace individual diodes? Go

I'm not sure I would want to glue it even if I could - because then I would need a pair of diodes that fit the holder. For some reason I suspect they are unobtainable too ;) Anyhow, as previously disc

The sampling heads have the trigger out connector mounted directly to the PC board anyway, so looking inside wouldn't have helped. Hopefully the hole is the same size as in a D-sub connector and it ju

No problem, I'll figure something out! I have various crimp tools, and a friend who used to install alarm systems and cable TV and still has the tools. I'm more concerned about mounting the connectors

It is going to be interesting, certainly. Now waiting on Digikey to mail them. The SOT-323 package (two series diodes) will be hard enough to work with. I just looked at the dimensions for the individ

Thanks for the heads-up. Snapdiode is sending me a couple of coax contacts that hopefully will fit - they sure look the same. I'll check transient response with the head directly in the plug-in and on

If you have a male and a female (since I need one for each end of the extender) ;) I'd happily pay postage. D-sub coax contacts can be had, for example: https://www.digikey.com/en/products/filter/d-su

I'll look for your album, thanks. The NorComp contacts are proving elusive (DigiKey lists them as "obsolete" and no price. Of course). However, it appears that other manufacturers also make similar co

Those look good, but I wonder how the contacts were originally mounted in the extender cable. There is no mark where a nut or clip would have been, and no separate bracket. Perhaps it's a push-in lock

Thanks! Please post if you find out more details or measurements :) The extender is still partially useful to start debugging the S-1 once I get the Schottky diodes from Digikey, assuming that doesn't

After searching through the TekWiki connector page, I think it might be an SMB?

When I bought my 3S2 sampling plug-in, it came with a 012-0124-00 Sampling Head Extender (3 ft). Thought that was a nice bonus. Unfortunately some genius seems to have removed the push-on coax connect

"?If the original diodes went in clips like the 1S1, you could use my technique. I took a bit of bare FR-4, ground it into a "T" shape with the crossbar fitting the clips, glued the SOT-23 diode in th

Thanks for the recommendations. Dan has raised his postage rate to $8.00... and Brad's email address bounced (at least the one on the website you linked, which was updated last in 2008. Anyhow, I orde

Thanks! I just looked at Mouser and they are non-stocked, obsolete. I'm sure I can find them elsewhere, but is there something you can recommend that is more recent? Would these work? They're only 0.8

Some are. https://www.mouser.com/datasheet/2/249/MA4E20xx_Series-938308.pdf

Sorry, I skipped a couple steps in my train of thought. There are also lots of GaAs diodes (not tunnel diodes) from Russia, for mixing and microwave applications. I figured on using a pair of those to

Yes, thank you, I already mentioned that :) So, once again, how electrically fragile are they? Will I damage a good one with 1 ma of DC forward current?

I acquired an S-1 sampling head for cheap, "Untested, for parts only" (Yeah, right, since it came from a surplus test equipment company!). We all know what that means. Anyhow, as I expected, it doesn'

After adventures in (mis)using my homemade extender cable (different thread), I FINALLY got back to working on the plug-in. D22 (unobtainable 1N3129 20 ma TD) just would not trigger no matter what, ju