Electronics Forum | Thu Jul 08 09:29:10 EDT 2010 | mb_mfg
There are several things that can be done. Shortening the lead length should eliminate bridging between lead. We had done a project several years ago where the customer had shortened the leads to almost flush to the board, preventing any chance of
Electronics Forum | Wed Jun 17 15:20:18 EDT 2020 | rsatmech
Thank you for your valuable inputs. Current two SMT line is running and I have initiated to use two different pcb suppliers in each line. Do I need to check the plating details in issue pcba or random pcb. Kindly suggest.
Electronics Forum | Thu Apr 11 19:06:59 EDT 2002 | tmarc
We are using 1mm pitch BGAs with a great quantity of via(s) under the component. Very shortly we will be placing CSPs with .65mm pitch. Our via(s) are solder masked, however we generally have a percentage of them that the masking is thin enough that
Electronics Forum | Thu Aug 28 09:30:20 EDT 2008 | patrickbruneel
Omid, No-clean fluxes need to be used right out of the can without thinning. In the past with RA and RMA fluxes you could adjust or thin them to your desired density because they had plenty of solids up to 30%. No-Clean fluxes have a lot lower solid
Electronics Forum | Tue Sep 04 07:34:02 EDT 2001 | Shvetang Dewashrayee
We have problems of solder shorts while using DEK Infinity printers. Some of the manufacturing lines are configured ina way that the side (bottomside) of PCBs mostly with passive parts is screened first and then the otherside (topside) of the PCBs w
Electronics Forum | Tue Aug 20 11:24:46 EDT 2002 | yngwie
Experts, Is there any reference to the best wetting time when doing manual soldering in order to get the most reliable joints i.e to avoid thick intermetallic line formations. I heard people says, the shorter the better, but how short is short...sa
Electronics Forum | Mon Jul 19 21:33:26 EDT 2004 | davef
Are you talking about small 'volcanos' that burst through PTH solder connections? If so, you have moisture outgassing through the PTH barrels: * Plating on the hole of your bare board is too thin. It should be greater than 1 thou [25um]. * Your bak
Electronics Forum | Thu Apr 14 05:23:10 EDT 2005 | dj_jago
What is the pitch of the device and what type of flux are you using? You may eridicate the fault by using a more active flux. I assume you are flowsoldering the device as opposed to paste in hole. Do you have an air knife? If so, you could tr
Electronics Forum | Fri Apr 15 10:47:09 EDT 2005 | patrickbruneel
Dhanish, If I understand correct your ICT doesn't detect shorts and only measures capacitive and resistive values. The webbing as Ken mentioned would have a resistance because this is caused by a lack of flux and the web is mainly tin oxide, which w
Electronics Forum | Tue Sep 18 01:41:23 EDT 2001 | shvetangcd
Hi Jeff, We are having solder-short problems for BGA, QFP, and some other fine pitch parts while using DEK screen printers. The PCB is processed on the second half of the line for screening the side with BGA, QFP, and other fine pitch parts. Which m
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