EEVblog Electronics Community Forum

Electronics => PCB/EDA/CAD => Topic started by: headingwest on May 22, 2013, 04:35:22 am

Title: Header pin hole diameter
Post by: headingwest on May 22, 2013, 04:35:22 am

Hi All, I'm putting together my first PCB.

At one edge are some header pins. I've downloaded a number of datasheets but can seem to get a standardised hole diameter that would work well.

Does anyone have an opinion on a good generic hole size for these connectors?

Thanks.

Title: Re: Header pin hole diameter
Post by: mariush on May 22, 2013, 05:18:37 am

If you mean the standard 2.54 mm (0.1") spaced pin header, seems that diameters range between 1 and 1.15 plus some tolerance.

Ex see

http://www.farnell.com/datasheets/1670824.pdf (http://www.farnell.com/datasheets/1670824.pdf)
http://www.farnell.com/datasheets/1442180.pdf (http://www.farnell.com/datasheets/1442180.pdf)
http://www.farnell.com/datasheets/819778.pdf (http://www.farnell.com/datasheets/819778.pdf)
http://www.harwin.com/include/downloads/drawings/M20-995.PDF (http://www.harwin.com/include/downloads/drawings/M20-995.PDF)

So use whatever's standard above 1.1mm or so?

Title: Re: Header pin hole diameter
Post by: poorchava on May 22, 2013, 11:32:26 am

I use 0.9 for a loose fit and 0.8 for tight fit.

Title: Re: Header pin hole diameter
Post by: free_electron on May 22, 2013, 02:53:58 pm

45 mils hole works well.

Title: Re: Header pin hole diameter
Post by: cthree on May 28, 2013, 04:55:36 pm

I use 40mil which is nominal I thinks.