Electronics Forum: pad and spacing (Page 1 of 60)

IPC Requirements for pad spacing reduction

Electronics Forum | Tue Nov 23 10:27:22 EST 2004 | Roxy Kendall

The pad spacings are 20 mills. I can send you a picture.

Via spacing

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

IPC Requirements for pad spacing reduction

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?

Via spacing

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

IPC Requirements for pad spacing reduction

Electronics Forum | Tue Nov 23 11:25:18 EST 2004 | davef

Please send pix. We don't understand the issue.

IPC Requirements for pad spacing reduction

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?

What is the preffered spacing between PTH and SMT pads

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

What is the preffered spacing between PTH and SMT pads

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)

What is the preffered spacing between PTH and SMT pads

Electronics Forum | Thu Apr 30 06:14:26 EDT 2009 | michafogel

Thanks , I'll try it too.

What is the preffered spacing between PTH and SMT pads

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

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