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Two general classes of IC sockets, which is better? — Parallax Forums

Two general classes of IC sockets, which is better?

Martin_HMartin_H Posts: 4,051
in General Discussion
I need to buy some IC sockets for a new project, and I intend to buy much more than I need to have an inventory on hand. There appear to be two general classes of IC sockets and I'm curious if there's an advantage to one versus the other.

Pin header style: http://www.digikey.com/product-detail/en/SA143000/ED3014-ND/3313545
Pressure fit on pin: http://www.digikey.com/product-detail/en/A14-LCG-T-R/AE9990-ND/821744

They're the same price, so is this an issue of preference, or is there some benefit to one style over the other?

Comments

  • LeonLeon Posts: 7,620
    edited 2015-09-21 14:39
    The turned pin type is more reliable.
  • ercoerco Posts: 20,256
    edited 2015-09-21 14:51
    Leon wrote: »
    The turned pin type is more reliable.

    Ditto. Machined pins are better and usually more expensive. Besides, wouldn't you prefer to buy On Shore vs. Assmann? :) (Manufacturers listed on Digikey website, moderators!)

    BTW, if you need any 8 pin sockets (or a quick method to test lots of any sockets), I got you covered.



  • Martin_HMartin_H Posts: 4,051
    @Leon, thanks, turned pin it is.

    @Erco, that is a riot.
  • ercoerco Posts: 20,256
    Martin_H wrote: »
    I intend to buy much more than I need to have an inventory on hand.

    From one hoarder to another, I humbly say "stock up, dude"!

  • WBA ConsultingWBA Consulting Posts: 2,934
    Martin_H, Turned pin will be better and you can easily determine this by a few key items in the specification and in comparing the OffShore part to the Assmann part, here is the breakdown :

    Contact Resistance: 4miliohm vs 30miliohms
    Current Rating: 3 amps vs 1 amp
    Insertion Force: <250g vs not listed, but maybe 100g
    Removal Force: >50g vs not listed, but maybe 35g


  • jmgjmg Posts: 15,173
    Martin_H wrote: »
    They're the same price, ...

    NOT when I've been buying them.
    The dual-wipe ones are under 1c/pin, much cheaper than the turned pin ones.

    try for example
    http://www.digikey.com/product-detail/en/ED14DT/ED3045-5-ND



  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2015-09-22 16:05
    I've heard that the single-wipe sockets are more reliable than the dual-wipe ones, since they apply double the force against the IC pins, albeit only to one side. My money is definitely on the turned-pin variety, though. I might use the cheaper ones for protos, but not for anything requiring long-term reliability.

    Irrespective of the foregoing, however, I quit using any IC sockets years ago, in favor of just soldering the parts in.

    -Phil
  • jmgjmg Posts: 15,173
    edited 2015-09-22 03:09
    "Phil wrote:
    Irrespective of the foregoing, however, I quit using any IC sockets years ago, in favor of just soldering the parts in.

    Yes, sockets are a tail-end technology.

    We have one legacy product using PLCC44 sockets and we changed to the HPT types from AMP/TE to give the customer more reliability.
    Those sockets got more costly and harder to find, so we had to redesign the PCB for direct mount soldering.


  • Martin_HMartin_H Posts: 4,051
    Not using sockets is tempting, but I have occasionally debugged a board by removing an IC. I'll have to think about that.
  • ercoerco Posts: 20,256
    http://www.goldmine-elec-products.com/prodinfo.asp?number=G16932B

    sale on machined pin 16 pin sockets, 20/ $2.50
  • cruXiblecruXible Posts: 78
    edited 2015-10-02 06:01
    I find the dual-wipe sockets leave less room for error and more bent pins. +1 machined
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