Electronics Forum | Fri Oct 12 12:12:13 EDT 2018 | davidsmullins
We have some fairly standard 0.1" pitch, two row, shrouded, through hole headers soldered onto a thick backplane. There are tiny inspection holes along the bottom edge of the plastic body that allow an inspector to observe the top of the through hole
Electronics Forum | Wed Nov 21 06:01:57 EST 2018 | premkumar_haribabu
Hi Davef, Thanks for your quick reply , just my inputs - we using 99.99 % pure nickel strip for soldeirng & when we do manual soldering this nickle stips its working well but when coming to SMT reflow even after high peak temperature ,its removes ev
Electronics Forum | Fri Nov 23 05:59:18 EST 2018 | premkumar_haribabu
Hi RObl, Thanks for response , sorry to ask again & again . Is cobar paste solved the issues from poor wetting from nickel to PCB soldering,whether it will improve the peel off strenth more than 5 kg ?? as per our current last production , this nic
Electronics Forum | Mon Jan 07 13:28:56 EST 2019 | slthomas
Hi, I would like to try to help, but I think I need help in understanding your problem better. 1) do you see any discoloration of solder joints on the first side, after first side reflow? 2) after second side reflow, are solder joints on just the
Electronics Forum | Tue Jan 29 08:21:50 EST 2019 | electronics101
Hi All, Can someone please help, I have a number of tall surface mount components that according to IPC 610 (8.2.2.3) are a fail due to the end termination not wetting at least 0.5mm + solder height. The components are very well soldered but the sol
Electronics Forum | Fri Feb 15 15:37:35 EST 2019 | emeto
Hello, I have a capacitor that doesn't form intermetallic joint with SAC 305 solder paste.The board is ENIG. Solder melts and forms good intermetallic joint with the PCB finish. However, capacitor can be removed with physical force - it looks like a
Electronics Forum | Sat Feb 16 07:21:17 EST 2019 | SMTA-Joe
I am experiencing a "tarnishing" issue on PWB traces that may be causing problems with component reflow. The PWB traces are made to the following spec: SOLDER MASK OVER BARE COPPPER WITH SILVER IMMERSION PLATING PER IPC4553, PLATING TO BE 8-12 MIC
Electronics Forum | Mon Mar 11 06:49:42 EDT 2019 | SMTA-Bob
You problem will be related to the part type or the design. Standard 40 or 100 pin QFN or LGA parts are not going to drop due to weight as they are just a few grams. If you send a photo of the PCB pad footprint and the component separately I may be a
Electronics Forum | Mon May 13 03:01:23 EDT 2019 | peterchan
Hello, sir. We are a SMT equipment manufacturer from China. We have a hot-press soldering machine that can change your current situation of manual soldering on PCB board. In addition, we have a better reflow oven, the upper and lower two cold tempe
Electronics Forum | Fri Aug 02 11:06:39 EDT 2019 | robl
Personally I'd take a Metcal MX500 over a 130W JBC every day, and we had hundreds at the last place. However, here we have lots of JBC's, and my engineers and solderers swear by them. Both are good irons and like any you need to get your tip choice
