Electronics Forum | Thu Jul 05 19:37:15 EDT 2007 | davef
We assume the three leads are lined-up perpendicular to the wave. Without taking corrective action, we know this: * 50 thou pitch will bridge * DIP do not bridge As a corrective action that doesn't invovle a respin of the board, decrease the solderm
Electronics Forum | Tue Sep 10 10:38:12 EDT 2013 | rway
Most of the PTH components are manually inserted. Some are auto-placed by our UIC machine. The parts are preped before install, so there is no need to trim the leads afterwards. The boards go through wave solder. The UIC machine has a clincher on
Electronics Forum | Wed Nov 19 15:16:47 EST 2014 | warwolf
Interesting, see we used to do a large amount of PTH but we have been able to convert most of those parts to SMT now. the majority of our PTH is connectors. I am doing some research as to the types of through hole assembly that still remain.- This d
Electronics Forum | Mon Jun 28 11:47:54 EDT 1999 | Christopher Cross
| | | hello, | | | | | | has anyone tried dispensing solder paste in thru holes instead of waving or hand soldering. if so how did it work out for you. | | | thanks for the input | | | | | | wayne | | | | | | | | | | | We have tried this mainly
Electronics Forum | Mon Apr 21 09:01:38 EDT 2003 | russ
Wave solder - Initially high cost but after that it is relatively cheap. Selective soldering with a solder pot such as the Air-Vac PCBRM models - Much lower cost than wave but if you get the right nozzles it is a great process. Solder preforms - s
Electronics Forum | Tue Jan 30 12:03:15 EST 2001 | slthomas
Pete, I'm wondering how much optimisation you needed (or were allowed) to do with respect to connector design. The first one we evaluated had a row of leads that I can only describe as "crescent" shaped in cross section. Impossible to get even 50%
Electronics Forum | Thu Mar 01 21:20:47 EST 2007 | J.R.
Let's talk pin holes and blow holes. I've been here since the transistion of leaded to lead-free process started for our company and we purchased a wave machine just to keep up with our lead-free orders. we put out 500-1000 boards a day both leaded a
Electronics Forum | Thu Jul 05 10:41:37 EDT 2007 | realchunks
Hi BR, Are you screen printing adhesive to the bottom of the board? If so, have your stencil make put openings between the leads of the thru-hole part. SMT adhesive acts as a natural solder resist. So placing a small sliver between the pads works
Electronics Forum | Fri Jun 16 10:38:33 EDT 2000 | Iain
I have 15 very large backplanes (.156" thick Au plating) that the ground pins of a high density thru-hole connector were not thermal relieved in the artwork. As a result we are unable to solder the 8 pins that connect to the ground plane. We know t
Electronics Forum | Thu Feb 05 08:39:16 EST 2004 | 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.
