Electronics Forum: hole location tolerances (Page 6 of 30)

Problems with devices utilizing a

Electronics Forum | Tue Mar 13 08:04:28 EDT 2007 | Cmiller

We have used thousands of them with no problems. They will not aid in "connector retention" unless you have a shear force at exactly the right angle. This is an advertising joke. They will help with alignment of the connector. Open your holes up so t

Paste Over Hole Insertions

Electronics Forum | Fri Jan 21 12:26:13 EST 2005 | Joel Lohr-Dataforth

We are attempting to increase utilization of our Pick and Place equipment (MY9) by transfering more components into the SMT area. Large gains could be had if we can successfully place a metal socket with a lipped pickup surface into a circuit board h

Design Guide

Electronics Forum | Mon Apr 29 02:50:03 EDT 2002 | Bob Willis

The basic guidline is lead size plus 0.010" which you can also use for through hole reflow/intrusive reflow. Most suppliers of the insertion equipment quote this as the minimum clearance hence its a good guide. Druing recent trials for through hole

REFLOW SOLDERING OF THROUGH-HOLE COMPONENTS

Electronics Forum | Mon Jul 01 13:55:16 EDT 2002 | Sherry E. Howard

Thanks for the article locations!

Re: PCB fab supplier supplier/evaluation

Electronics Forum | Sun Aug 08 11:15:32 EDT 1999 | Earl Moon

| | Mike, | | | | Got your message and those of others concerning PCB fab supplier evaluation and qualification check lists, etc. I have a severe problem here in WI as I can hardly access the internet, and when I do it is cut off abruptly for no goo

Re: Press fit connnector

Electronics Forum | Thu Feb 10 10:49:26 EST 2000 | Sal

The connectors are well within thier specification,and are also checked for misaligned and damaged pins , as regards the cross-section results, all holes are correctly aligned and are well spaced within their tolerance of +/-0.005 (a couple of isolat

Re: Press fit connnector

Electronics Forum | Wed Feb 09 12:02:15 EST 2000 | Wolfgang Busko

Sal: If it�s not the PCB, what about the connector itself ? Is it from a different production lot with some unregularities ( dimensions, tolerances, pin alignment, material weakness)? How about handling, storage, shipping causes ? Could it be a tooli

Re: Conductor Edge Spacing

Electronics Forum | Tue Sep 26 20:50:06 EDT 2000 | Dave F

Right!!!! We have built product with via holes only 0.010" off the edge of the routed edge or even routed them in half, which usually adds cost and shorts to the chassis. Most high speed routing has a tolerance of +- 0.005". It's common for UL fi

Home plate aperture holes

Electronics Forum | Mon Jul 16 14:38:22 EDT 2001 | ohboy

If your pad designs don't meet IPC recommendations, using home plate may have adversely affected the (possibly marginal) placement tolerances. This could also be caused by an incorrect home plate design, which IPC has also given recommendations for,

Lead-free PCB: After Effect

Electronics Forum | Fri Aug 25 07:53:12 EDT 2006 | Hussman

Board House, One last question. Could the above changes make the board more ridid? My concern is we insert Pem nuts via a press. Nothing has changed in this process except the board house. Now when ever we insert these Pem nuts the board cracks.


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