Electronics Forum | Tue Dec 16 19:45:47 EST 2003 | Hiram
Hi, I am looking for the IPC criteria hole-to-lead ratio. Does anybody know a practical way to determine if some holes in my pcb's do not get enough solder in the wave solder machine because an inapropiate hole-to-lead ratio? Thanks in advance! Hi
Electronics Forum | Wed Dec 17 10:10:35 EST 2003 | Hiram
Thanks Dave, your comments were very helpful! Hiram
Electronics Forum | Wed Dec 17 09:53:26 EST 2003 | davef
IPC-2222 - Sectional Design Standard For Printed Board For Organic Printed Boards, Table 9-3 � Plated Through Hole Diameter To Lead Diameter Relationships will give you the standard information you require. If we can�t get proper hole fill after try
Electronics Forum | Sat Mar 21 09:09:40 EDT 2009 | davef
Your puzzlement about blowholes in PTH solder connections during reflow soldering comes from: * Boards are hydroscopic. So, moisture content of the board is uniform. * Gold plating is uniform. * Nickle plating is uniform. * Copper plating on your PTH
Electronics Forum | Sat Jan 15 21:52:15 EST 2000 | Dave Bartlett
I am looking for information comparing the reliability of smt boards vs thru hole boards. Also, information on when to use thru hole instead of smt if there is such a case. Background - We currently make temperature controller with a mix or smt and
Electronics Forum | Sat Dec 24 07:48:52 EST 2005 | ams_gen
Hello, I need to rework a thru hole DIP mounted on a metal backed FR4. It is difficult to remove the FR4 board from the metal back since it is riveted. Is there a simpler way to takle this? Thnx
Electronics Forum | Tue Dec 27 10:57:20 EST 2005 | DannyJ
I'm not sure if I understand the question correctly... Mainly, drill the mushroomed end of the rivet with a drill bit that is slightly larger than the shaft size of the rivet and remove the cover. Then, you should have easy access to what you need t
Electronics Forum | Wed Feb 27 17:12:30 EST 2002 | sueph
I am interested in the book "Soldering in Electronics Assembly" by Keith Brindley and Mike Judd. Has anyone read it or can anyone recommend itor one that is good. thanks
Electronics Forum | Wed Feb 27 17:25:39 EST 2002 | JoAnn
This book, as well as many others on soldering, is available from the SMTA. It can be purchased on-line at http://www.smta.org. Click on Bookstore. Jesse in our office (952-920-7682) can also answer specific questions you may have.
Electronics Forum | Wed Feb 27 22:24:28 EST 2002 | davef
I own and have read this book. While it is better than the average soldering book, it is not the first book that I reach for in trying to sort through a problem. It introduces a broad range of soldering methods with a reasonable amount of detail, b
