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Part # for crystal socket on Parallax Products — Parallax Forums

Part # for crystal socket on Parallax Products

Timothy D. SwieterTimothy D. Swieter Posts: 1,613
edited 2009-01-24 05:01 in General Discussion
On the Propeller Demo Board and Propeller Protoboard and a couple other Parllax products I have seen a socket for the crystal. The socket is essentially a cup in a via that sits nearly flush with the board. I am looking to use something like that in on of my designs but I am having trouble searching for the right item. Does anyone have a lead on what the part is called and where I can get it from?

Thank you.

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Timothy D. Swieter, E.I.
www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope
www.tdswieter.com

Comments

  • LeonLeon Posts: 7,620
    edited 2009-01-23 19:04
    They are called cage jacks. Cambion makes them:

    www.cambion.co.uk/main/solder1.htm

    I've used them for double-balanced diode mixers.

    The above ones would be about right for crystal leads (0.43 mm).

    Leon

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    Amateur radio callsign: G1HSM
    Suzuki SV1000S motorcycle

    Post Edited (Leon) : 1/23/2009 7:16:17 PM GMT
  • Timothy D. SwieterTimothy D. Swieter Posts: 1,613
    edited 2009-01-23 22:11
    Thanks Leon. It looks like Newark has some in stock, but boy the price is US$0.90 for one socket! I was hoping it was a little cheaper. Are there any other similar products? Cage Jack looks to be a brandname of sorts. Perhaps I just need to spend some time in Shenzhen and I will find them, it has been a while since I visited the electronics market there.

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    Timothy D. Swieter, E.I.
    www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope
    www.tdswieter.com
  • LeonLeon Posts: 7,620
    edited 2009-01-23 22:35
    Yes, they are expensive.

    Leon

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    Amateur radio callsign: G1HSM
    Suzuki SV1000S motorcycle
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-01-23 22:41
    The ones we've used are called Pin Receptacles and are similar to this one.

    http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=ED5044-ND

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    Chris Savage
    Parallax Engineering
  • Timothy D. SwieterTimothy D. Swieter Posts: 1,613
    edited 2009-01-23 22:44
    BINGO!!! Thanks Chris, that is the price point I was hoping for. Thank you Leon and Chris for point out the two products.

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    Timothy D. Swieter, E.I.
    www.brilldea.com - Prop Blade, LED Painter, RGB LEDs, uOLED-IOC, eProto for SunSPOT, BitScope
    www.tdswieter.com
  • ForrestForrest Posts: 1,341
    edited 2009-01-24 00:10
    In a pinch, I've snipped apart a IC machine socket. Once you snip it apart, the plastic breaks away and it looks very similar to the link Chris provided.
  • LeonLeon Posts: 7,620
    edited 2009-01-24 00:34
    They don't grip very well as the crystal leads are thinner than IC pins. They aren't nearly flush with the top of the PCB, either.

    Leon

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Amateur radio callsign: G1HSM
    Suzuki SV1000S motorcycle
  • Carl HayesCarl Hayes Posts: 841
    edited 2009-01-24 03:39
    I ordered some stuff from Mouser today, including 5 MHz crystals for boards I'm designing that will use Propellers. At 53 cents for a crystal (Mouser # 520-HCU500-20X), I personally wouldn't socket them at all.

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    · -- Carl, nn5i@arrl.net
  • SRLMSRLM Posts: 5,045
    edited 2009-01-24 04:26
    I think the problem arises when you solder them. If I remember right, extensive heat can kill the accuracy. If you're careful I suppose it would work...
  • Carl HayesCarl Hayes Posts: 841
    edited 2009-01-24 05:01
    I imagine if you did all your soldering with a #7 tip on a Victor acetylene torch, it would be a problem, at that.·

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    · -- Carl, nn5i@arrl.net
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