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Cheap Ghz SMD resistors

Discussion in 'Electronic Design' started by Nico Coesel, Sep 11, 2009.

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  1. Nico Coesel

    Nico Coesel Guest

    Anyone know a source for cheap resistors (0402 or 0603 package) that
    are usefull up to around 4GHz? Small quantities ofcourse. The ones I
    found so far costs around $7 each.
  2. Joerg

    Joerg Guest

  3. Joerg

    Joerg Guest

    This was in the 90's, not sure how they behave today: If the meander
    cuts for trim were grossly non-symmetrical it helped to use two
    resistors of twice the needed value on top of each other, with one being
    upside down. Probably best to flip the lower one so you can still read a
    part value.

    If they just weren't so freaking bulky ...
  4. Joerg

    Joerg Guest

    Nice enclosure. Who buys this kind of gear? University research labs?

    I meant two stacked and one of them flipped. But possibly the deposition
    process is more precise than in the 90's and the meander cuts are
    miniscule nowadays, then it wouldn't make a difference.

    Main thing is, you've got the space. Plus that crane :)

    But from what you said a while ago most of the sampling heads of the TDR
    scopes sold 2nd hand are shot. I can't imagine the ordinary user
    figuring out how to mess with the diodes and stuff in there. Of course,
    who needs TDR this fast and accurate? Installers narrow it down to a few
    feet and then fire up the backhoe.
  5. Joerg

    Joerg Guest

    Maybe you could let a company like Thorlabs carry and sell it.
    Wow, maybe you can put that on your web site, into a "history" section.

    Amazing. I wonder where they got the super-small SMT parts for the
    actual head, considering that these were probably built in the 80's.
    Although picture 005x seems to show a 1995 number.
  6. Joerg

    Joerg Guest

    True. Same for industrial real estate. Except that out here one never
    knows whether and when the left blows a hole into the business property
    tax cap (Prop 13) which can cause an exodus. Plus a lot of places have
    been vacant for over a year so they are all negative cash flow.
  7. Joerg

    Joerg Guest

    Ok, that sure would make them unrepairable for ordinary folks. Maybe
    occasionally you could find a SMT diode or something that's small enough
    to be crammed in.
  8. Nico Coesel

    Nico Coesel Guest

    Sounds like I can get away with that too. I'll probably use 0402 parts
    to preserve board space.
    Its an idea for a measurement product (don't worry, nowhere near the
    stuff you are doing). I need the resistors mostly for transmission
    line termination. Since traces on FR4 and the internal impedances of
    the chips aren't very accurate 1% precision will do.

    I have been looking into a sampling scope but they are bulky (that
    will cost me at least $200 for shipping) and ofcourse the heads may be
    bad. It does take a while before a complete kit for a reasonable price
    comes along.

    BTW for some unknown reason that sort of 'special' equipment is very
    very rare on the 2nd hand market over here. The last two logic
    analyzers that I bought and most of the accesoires came from the US.
  9. Joerg

    Joerg Guest

    That is one full house. I guess your only options would be a granny flat
    or another building close by. The beauty of being self-employed is not
    being away from home so much but with an office building somewhere in
    town that advantage would go away.

  10. Joerg

    Joerg Guest

    Phil Hobbs wrote:


    That's $19/sqft per year, right? That would be roughly what space goes
    for out here.

    Then they won't throw in much in tenant improvements but that's usually
    ok for a consulting business.

    I meant as a separate building in the yard, not attached. Attachments
    can really look yucky and destroy the character of a house. Maybe make
    it look like a nice barn.

    From a business perspective a place like Montana might be better. But
    for my wife it would be too freaking cold out there. Maybe Arkansas,
  11. Charlie E.

    Charlie E. Guest

    Yeah, when I was getting to move in here, a little old '60s era motel
    was on the market in Borrego. It was fully solar powered, had like
    ten rooms, plus the manager's space, for $450K. I was tempted, but
    had decided to move out of Borrego by that time. The pool was nice,

  12. Charlie E.

    Charlie E. Guest

    Ok, a little more searching found:

    These are kinda pretty, and would be ideal for office an lab space!

  13. Charlie E.

    Charlie E. Guest

    Whoops! Just posted another link to I don't know what thread...

    Here is the nice one I was thinking of...

    Pretty, and yet very efficient!

  14. Joerg

    Joerg Guest

    If you have no regular customer traffic and just work from home, what
    can they do? If they prohibited work from home that's called
    discrimination and a class would rather quickly be formed :)
  15. krw

    krw Guest

    They would try, trust me. However, without traffic it's hard to tell.
    The issue here, I think, is the added "manufactured housing" space.
    Westchester CO will *certainly* balk at that. An office in his
    basement would never be found, unless his server (or other) farm was
    enough to make the meter spin.
  16. Joerg

    Joerg Guest

    That would get my blood boiling and I'd be outta there rather soon ;-)
  17. krw

    krw Guest

    Yeah, and move to AZ, like Nomad. ;-)
  18. If I had to "spread out" from my home and own or rent some commercial or
    industrial property to work from at least nominally,

    I would get into a good mood for Mississauga, Ontario, or someplace
    nearby to the north (maybe Brampton) or to the west.

    Mississauga appears to me to be the most industrial city in North
    America north of the Rio Grande. I suspect its massive industry content
    and its great population growth rate say good news about tax structure.

    It appears to me that Mississauga has gigatonnage-plus of "industrial
    parks", and I suspect that there are places in Mississauga to rent at a
    cheap rate a hidey-hole where nobody has any problems with operating wave
    soldering machines, arc welders, and adventurous prototypes.

    Toronto appears to me to have tax structure worse than Mississauga, but
    I know a recently-retired Toronto police detective who built up a little
    business for himself manufacturing specialty lighting products and things
    good to make with a "garage" machine shop - and his away-from-home office
    is in Toronto rather than Mississauga.

    For those who live where a commute to Canada is doable even if only a
    day or two per week, I would advise looking into putting the workplace
    (or at least the nominal one) north of the border.

    - Don Klipstein ()
  19. Joerg

    Joerg Guest

    They might try, once :)

    If they'd discriminate against a freelance electronics guy but not
    against a mom that does some typing work or medical coding from home, or
    a freelance journalist, that would end up in a huge jury award for the
    electronics guy.
  20. krw

    krw Guest

    You don't know NewYawk politicians and other like busy bodies.
    Freelance electronics types aren't a protected class; discrimination
    is perfectly legal. ;-)/2

    Seriously, just because one person does something illegal doesn't give
    license to another. No award at all.
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