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Description: Single row of 30-holes, female header with swiss round machined pins. These units have very high quality round pins to accept and retain machine pin headers much better. Can be cut to size with a pair of wire-cutters. Standard .1" spacing. We use them extensively in the Olimex development boards. They mate very well with break away headers.

Features:

  • Receptacle Style: Machine (Round)
  • Number of Pins: 30
  • Pin Spacing: 0.1" (2.54 mm)
  • Receptacle Depth: 3 mm

Documents: 30-Pin Swiss Female Headers

Comments 31 comments

  • What’s Swiss on those? Looks of rather chinese origin? :-)

  • I havent used these before, are they compatible with standard pin?

    • I second this question. Are they compatible with standard male header pins?

      • The ones I just purchased do not fit the standard square breakaway headers. I found this description misleading, and maybe they just got a bad batch, but it seems the ones I have mate only with other machine pin headers.

        • They also mate very well with ICs. I actually use these very heavily in place of standard DIP sockets. The price is far more expensive, but the benefit is worth it in my opinion. Sockets tend to be crowded underneath which prevents adding any parts under the IC. Using these, I’m able to use Parallax Propeller chips with the crystal and EEPROM all under the chip itself with room for more – very nice way to save space on a board. It’s even possible to put the programming pins that connect to the PropPlug under the chip if you use 90 degree angled headers (you’d need to have the edge of the chip near the edge of the board to get to it).

          • I like the idea of placing Xtal, eeprom and so on under the Propeller chip, it’s the reason I am looking at this right now!! love the idea of putting prop plug headers under it too, excellent! :D

        • Thanks so much for the comment. I almost just bought square pegs for a round hole assuming like you that they’d fit.

  • What is the purpose of this type of header? Recently got a whole bunch of headers from Ebay (very low, sometimes none, shipment costs :) ), both male and female, but the standard 2.54mm male headers do not fit in this type of female header. After coming across this page I read about there being round and square varieties and they don’t seem to be compatible with each other.

    So why does the round female variety even exist since you can’t seem to use it with standard male headers?

    • Machine pin (“round”) headers are more reliable (and typically more expensive) than square-pin headers. They grip tighter and provide more points of contact, which helps in high-vibration environments. I personally prefer them, but as you’ve found they’re incompatible with square-pin headers; you need to use all one or the other.

    • Standard components fit in them very well, however - especially DIP/DIL parts (chips, matrx displays, etc.) and jumper wires, which tend to fit rather too loosely in the other headers.

  • http://www.ebay.com/itm/12pcs-2-54mm-40Pin-Break-Away-Female-Headers-Swiss-Machine-Pin-/370640095302?pt=LH_DefaultDomain_0&hash=item564bdf0846 one set of headers for 3.95$ or 12 sets of headers for 5.70$ish … please tell me why

    • OK. As a small business, we’re limited in the amount of inventory we can handle. If you look at the part numbers for our newest items, you’ll see that we’re currently in the 11000s. Each item we carry costs us something in the space required to store and handle it, and since each item needs to “pull it’s own weight” in revenue, the smaller items tend to pay an unfair price in higher retail costs. Compare that to a huge company like Digi-Key (who we’re big fans of by the way), which stocks literally millions of parts, and can take advantage of the economy of scale to sell those parts at lower prices.

      So you might ask why carry small parts at all? The answer is that although we’re not going to be the next Digi-Key (they’re so good at it we’re not even going to try), we DO want to be your one-stop shop for your projects, and so we carry parts like header strips, standoffs, and wire that you tend to need on almost every project. We hope that even though the price on these parts is a bit higher, that the convenience of not having to go to a second (or third or fourth) company to place additional orders will be worth it.

      • On your site, I can find the parts quickly. Perhaps your small parts are more expensive, but the convenience is well worth it for my situation. So please keep stocking the small stuff!

      • +1 for pointing out the realities of a small business.

      • Nice response. Please do keep stocking parts like this. Yes, you can get them more cheaply on ebay, but they come from Hong Kong and China and the shipping times are LONG….

      • When I was there last they didn’t have nice, detailed descriptions, comments, and examples like SFE has, which is why SFE is my first stop.

  • Dear staff,

    Do you have anything like this female headers but with longer legs? The longer legs should help a lot!!!

    • At the moment, the only headers we carry with longer legs is the “Break Away Headers - Long” PRT-10158. I will pass along as a product suggestion. I recommend seeing if digikey.com, mouser.com, or your local electronics store carries them!

  • Gosh, these things are amazing. Wish they’d just use these instead of those crappy ones on Arduino boards.

  • zv470, it is possible and very usefull =)

  • is it possible to plug crystal oscillators into these? I’m thinking of making an AVR developement board where I can plug in different frequency crystals.

  • Do you still lose a pin when breaking these apart, like on the other breakaway female headers? These definitely look like they break easier.


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