Brian,
I use Harwin pins when I have space. They require a 0.035" hole and must
be riveted for reliable connections. I understand some people don't
bother with riveting ! There is a special dispenser for the pins, I've
never seen it, and can't be bothered to get one, I simply push the rod
in and bend it, that leaves the pin jammed in place ready to rivet.
The pins are shown here
http://hans-w.com/harwin_pins.jpgI buy them from AXIS ELECTRONICS INC. 301-840-9640 in packets of 2500
Harwin part # T1558-01
Cost... well I can't remember the exact $ figure but $35-45 including
freight sounds about right.
I rivet them with a modified automatic center punch shown here
http://hans-w.com/punch.jpgWhen I need a really small via, I drill 0.016" and insert a tinned
copper wire and rivet with these modified pliers shown here
http://hans-w.com/modified_pliers.jpgAs you can see the extra clearance allow deeper access fro the edge of
the PCB. Copper wire is so soft one squeeze and it's in place.
Hans Wedemeyer
Brian Schmalz wrote:
> Hans,
> Can you describe more about your Harwin Via Pins? I'm very
> interested.
> Where did you get them, how much do they cost, what size holes do you
> drill,
> how do you apply them, etc. Your board looks very nice!
>
> ∗Brian
>
> -----Original Message-----
> From: Hans Wedemeyer [mailto:hans@...]
> Sent: Friday, October 18, 2002 5:00 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: Re: [Homebrew_PCBs] Ferric chloride?
>
>
> COS (change of subject) for those interested I posted a photo of how I
>
> rivet Harwin via pins
> http://hans-w.com/pcb_harwin_rivets.jpg
> <http://hans-w.com/pcb_harwin_rivets.jpg>
> The four pads at the lower right are half of an SO8, should help to
> gauge size.
>
> Hans Wedemeyer
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
> Yahoo! Groups Sponsor
ADVERTISEMENT
[Image]
[Image]
>
> Be sure to visit the group home and check for new Bookmarks and files:
>
> http://groups.yahoo.com/group/Homebrew_PCBs
>
> To unsubscribe from this group, send an email to:
> Homebrew_PCBs-unsubscribe@yahoogroups.com
>
>
>
> Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]