Electronics Forum | Thu Aug 14 10:54:21 EDT 2008 | diesel_1t
Comments are: * Link you posted to your brush > actually connects to a general catalog page. * > Not sure what solders your friend was using, but > pastes leave different residues that affect > probing. Some are soft and gooey, others are hard >
Electronics Forum | Sat Sep 27 10:26:39 EDT 2008 | realchunks
Can you have an outside vendor source it for you? Kind of like an "in house store". Besides paste, they would also supply you with all your other "dated" material. That way you only get charged for what you use. Then make sure your operators chec
Electronics Forum | Tue Mar 31 05:26:14 EDT 2009 | d0min0
Hello, we had similar problem in the past - when we had to change PCB supplier from a batch of hundreds of boards (NiAu plated, SnPb process) we got 2-3 boards with paste wicking to components leads what we did, was to check the thickness of gold on
Electronics Forum | Sat Aug 01 01:37:07 EDT 2009 | abhinavajmera
I have been working on Pb-free assemblies of screw terminals (terminal blocks). Unlike, other pin-in-paste conducive components, these component has square headed leads. We have been facing issues with the solder dripping into the oven. We were able
Electronics Forum | Tue Sep 01 16:40:50 EDT 2009 | jimprice9
I am the North American sales manager for Sony. This exchange was brought to my attention by an amused friend. The VR systems was marketed under the brand name Varir and produced by Sony Kohda. It was discountinued over 3 years ago. The CPC500 is
Electronics Forum | Thu Feb 04 09:31:21 EST 2010 | llaerum
I was wondering if someone on this forum are in Austin or Dallas. If so could they post the type of SAC305 WS solder they use. I am interested in type 3 and type 4. Due to our current vendors repeatability issues we are trying to find out who the la
Electronics Forum | Tue Feb 23 16:45:36 EST 2010 | dyoungquist
Davef is right on as usual. We are doing exactly what you do. Some smt with no clean paste then the plate through connectors on our selective solder machine using water soluble flux. We then clean with a ultrasonic water process. We do see the re
Electronics Forum | Thu Aug 19 15:26:34 EDT 2010 | namruht
Thanks everyone. I have thought about the moisture in the paste a lot, but never really gave the raw card moisture any consideration. The next time we run an assembly with the issue I will try baking some of the cards once the issue shows up to see i
Electronics Forum | Wed Sep 01 12:07:31 EDT 2010 | davef
Printing solder paste * Use single stroke, on-contact print cycle * Ensure the substrate is well supported, especially under areas of fine pitch print. * Select pressures of about 1- 2 lbs per linear inch of squeegee blade [Set squeegee pressure hig
Electronics Forum | Fri Nov 05 12:25:42 EDT 2010 | deanm
I think you are right. According to IPC-7526 section 6.2 says that using compressed air to blow out paste will damage the stencil, especially between fine pitch apertures. It can also broadcast solder paste onto other surfaces or personnel. I recomm