Electronics Forum | Thu Feb 05 05:27:55 EST 2004 | dszeto
We have recent customer asking for PCB's PTH hole size related to soldered wire AWG 18-26. Please kindly advise any international standard for captioned issue. Thanks!
Electronics Forum | Thu Oct 30 23:39:10 EDT 2014 | beilimanu
No paper thing, while I can make some suggestions based on my experience. what is the size of your via? If it's smaller than dia0.4mm, in PCB production process it should be filled by soldermask. So my suggestion is design it to be full filled by SM
Electronics Forum | Wed Jan 31 01:41:00 EST 2001 | pjc
Steve, I have no influence over conn design. We paste print-reflow solder two types of connectors. One is a 50 pin IDC w/ 0.5mm lead dia @ 2.54mm lead pitch and a chamfered pointed lead tip. The other is 32 pin DIP w/ 0.36mm lead dia @ 2.54mm pitch
Electronics Forum | Thu Mar 11 03:03:26 EST 2010 | grahamcooper22
Hi , Looking at your photo....can I also see a hole in the middle of the joint on the chip component ? Maybe its not just a problem with th ejoint son diodes ? Did you also get mid chip solder balls on chips? If so, I'd almost guarantee the pcb has t
Electronics Forum | Thu Mar 11 02:56:01 EST 2010 | grahamcooper22
Hi, blow holes / pin holes / holes in joints are usually a sign that there is excess moisture somewhere around the solder joint. Moisture can be in pcbs / components, so try drying them....a simple thing to do is pass a bare pcb throught your reflow
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 | Fri Sep 01 05:29:01 EDT 2017 | mona0312
Hi, Recently, i found a company called "jlcpcb". It’s very cheap 10pcs boards. 1.2mm thick, 1-OZ copper, 6/6-mil outer (0.1525mm) just cost $2 Cheap price and lots of options regarding board thickness, colour, etc. None of my boards have ever had a
Electronics Forum | Wed Feb 12 12:06:58 EST 2003 | dwanzek
I need some input on what good solder thieves dimensions should be. I am limited to solving my bridging problem with solder thieves; all process/wave variables have been adjusted to try to solve this problem. There are several of these connectors on
Electronics Forum | Thu Oct 31 02:43:55 EDT 2013 | hqew2013
The smallest finished hole available for 2 layer board is .020”. The smallest finished hole available for 4+ layer board is .014”. All holes are round and drilled through from top to bottom layer of board. No blind or buried vias. For holes = .15
Electronics Forum | Mon Aug 18 14:38:51 EDT 2008 | floydf
Real Chunks, Does "aperture opening 100% same size as the via" mean, aperature the same size as the hole, or the barrel of the via. If that makes any sense. Thanks
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