Electronics Forum: pcb and solder and defects (Page 6 of 24)

Lead-free and Leaded solder in the same reflow

Electronics Forum | Wed Feb 01 03:38:56 EST 2006 | Jose Luis

Hi all, I'm working in Military Production and then, We have an exception about RoHS (LEAD FREE), but, because we use "normal" components, in this moments, a lot of components have LEAD FREE terminations, and we think that after of 1st July, we wo'nt

SMT Processing and gasketing

Electronics Forum | Tue Nov 11 16:30:08 EST 2008 | naynayno

Occasionally solder mask thickness is believed to be the cause of gasketing challenges during paste printing. We currently specific IPC-SM-840 on our fab drawings but this provides no limits or guidelines on thickness. I do not want to cause an unr

Pick and Place Rivet

Electronics Forum | Wed Aug 13 05:18:40 EDT 2008 | lococost

that's a pretty cool idea, I like some thinking 'outside the box '! 1. I don't think picking it up and placing it will be much of a problem. once the rivet is placed it will be held in place by the paste. However, you would need to make a tray that

Wave and Reflow Profiler

Electronics Forum | Tue Feb 19 09:41:26 EST 2008 | slthomas

ECD sells the MOLE, and they sell both the Oven Rider and the Wave Rider to accompany it. The thing is, you can profile both an oven and a wave machine without either if you're willing to just solder your thermocouples to a board. The nice thing ab

SMT solder reflow clamps, pushers and pullers for tooling

Electronics Forum | Mon Apr 16 18:49:40 EDT 2012 | tris101

Hi guys, I'm looking for some tooling parts and I hope you can point me in the right direction. We design basic in house reflow Carriers to surport boards during reflow. I would like to add clamps to our designs but I can not locate any off the she

Pick and Place Nozzles

Electronics Forum | Mon Aug 18 15:03:38 EDT 2008 | awegener

I'd like to get more information about pick and place nozzles. How can I learn more? ... What do the nozzles look like? Are there different shapes? Are custom nozzles sometimes used for custom parts or are the nozzles mostly standardized? What kind

Solder Paste and fine pitch components

Electronics Forum | Wed Sep 18 12:31:16 EDT 2002 | dragonslayr

My suggestion is to conduct a Design For Manufacturing (DFM)study on the assembly in question. Pay particular attention to the pad sizes, component lead dimensions and satisfy yourself that those two factors are correct. Given that pads match compone

SMT on rig-flex and multi-flex boards

Electronics Forum | Fri Oct 22 11:53:53 EDT 2004 | C Lampron

Hi Christina, What would you be basing the yields off of? Is it solder defect, component placement, etc....? I have worked for a flex house for quite a few years. You are right. The Polyimide is very dimentionally unstable. (even more so on humid da

Re: Solderability of BGA and PCB

Electronics Forum | Mon Nov 20 21:02:46 EST 2000 | Michael Psrker

First question I have for you is: Are you assuming that standard precautions are in place at your facility to minimize moisture content i.e. air- deionizers, vacuum sealed packaging, humidity control in storage and manufacturing? You do not mention

Foam fluxer maintenance, storage and cleaning

Electronics Forum | Mon Nov 09 09:44:22 EST 2015 | davef

Purpose. This describes setting-up a wave soldering system set-up for a new assembly design or checking a wave solder machine operation with a test board. Applicability. To be used for new design printed circuit assembles and during machine accept


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