Electronics Forum | Tue Nov 23 10:27:22 EST 2004 | Roxy Kendall
The pad spacings are 20 mills. I can send you a picture.
Electronics Forum | Mon Dec 02 08:43:20 EST 2019 | scotceltic
What are people using out there for minimum spacing between vias ? We recently came across a PCB manufacturer that wants us to increase our spacing due to their process. Below is our current spec. that we follow. Spacing between via pad to via pad o
Electronics Forum | Tue Nov 23 08:53:22 EST 2004 | russ
I believe that a conductor is a conductor regardless of type, so the surface finish counts. What are the pad spacings that you speak of?
Electronics Forum | Tue Nov 23 11:25:18 EST 2004 | davef
Please send pix. We don't understand the issue.
Electronics Forum | Thu Dec 05 02:15:12 EST 2019 | sssamw
IPC 2221B mentions a minimum clearance of 0.5 mm between adjacent holes. A drill-to-drill spacing of 20 mils is a standard value in manufacturer design rules. For small annular rings and pad-to-pad clearance, the minimum via distance is often defin
Electronics Forum | Tue Nov 23 08:38:52 EST 2004 | Roxy Kendall
Does the conductor spacing requirement in IPC-600G apply to pads? Does it include the nickel/gold finish or only the underlying copper?
Electronics Forum | Thu Apr 30 22:40:32 EDT 2009 | davef
Selective Wave Soldering DoE to Develop DfM Guidelines for Lead and Pb-Free Assemblies Written by Makram Boulos, Craig Hamilton, Mario Moreno, Ramon Mendez, German Soto and Jessica Herrera Circuits Assembly Magazine, 31 December 2008 19:00
Electronics Forum | Mon Apr 27 02:44:07 EDT 2009 | michafogel
Can someone point me to a standard, if there is any, or design rule regards with preffared spacing between PTH and SMT pads for LF wave soldering process (SAC alloy)
Electronics Forum | Thu Apr 30 06:14:26 EDT 2009 | michafogel
Thanks , I'll try it too.
Electronics Forum | Tue Apr 28 04:07:56 EDT 2009 | davepick
There's a nice tool on this site - http://www.enhancetechnical.co.uk/ Click on Internet Tools and then the image - brings up a useful interactive tools which helps understand influences on wave solder bridges. Dave
