Electronics Forum | Fri Apr 13 14:08:53 EDT 2001 | CAL
Proper setup and cleaning of stencil helps ensure repeatable printing performance. Cleaning processes need to be compatible with materials used in the manufacturing of stencils and solder paste. IPC 7525 should also help you out. We here would Inspe
Electronics Forum | Tue Apr 17 10:17:10 EDT 2001 | genny
Hi, ENIG finish is the same reason I came to this forum for the first time a few months ago. I found a bunch of useful information by searching the archives. Check it out. ENIG has some good properties like flatness, and the process control has i
Electronics Forum | Sun Apr 22 23:46:28 EDT 2001 | z1040223
Hello all My company is getting ready to implement solder bump flip chips in the production line in the future. We are a contract manufacturer. We currently have the SMT facilities to do up to 1.5mm pitch BGA's, 0402 and other standard SMT. What equ
Electronics Forum | Wed Apr 25 16:35:55 EDT 2001 | Steve
Most of the time, we have very few skewed parts so I feel comfortable about the processes in general. However once in a while, often enough to throw off the first pass yield, we will get a few boards with a lot of skewed parts. By skewed I mean that
Electronics Forum | Tue Nov 28 12:05:04 EST 2000 | Garth Fitzner
Hello from Edmonton Dr. Abell! And hello from a currently enrolled Athabasca University student as well! My company is a small one. We have 12 people, only seven of whom are the assemblers and testers. We manufacture our own products and have our ow
Electronics Forum | Wed Sep 20 09:37:15 EDT 2000 | Erick Russell
Determining cost of rework is based on usage and application. Photonic soldering saves an average of 5 minutes per rework site in process time and may save a significant amount of labor. Depending on volume, and specifics on the application, the cos
Electronics Forum | Tue Aug 22 10:47:28 EDT 2000 | Dr. Ning-Cheng Lee
The European WEEE has issued a new (5th) version of its recommendations. In it they say that , on January 1st, 2004, they will review the status of the Pb-Free issue. There is currently NO DEADLINE for implementation. As far as a direct replacemen
Electronics Forum | Thu Jul 20 15:37:53 EDT 2000 | Tekguy2000
These parts are flat chip resistor arrays that have 4 end terminations on each side. It looks liek an IC but is typically in an 0805 and 1206 package type with convex terminations. .031" pitch from termination to termination and .011" spacing between
Electronics Forum | Thu Jul 20 15:47:13 EDT 2000 | Bob Willis
Based on what you have said so far it would be worth trying extra pads and as you may know the drainage pads should be a minimum of three times the length of the pads before them to be effective. Also take some parts stick them to a glass plate and r
Electronics Forum | Thu Jun 22 16:59:18 EDT 2000 | Lee
I'll be real brief, because of time, but feel free to contact me later (lgoldberg@chipcenter.com). There is big conceren (somewhat well-founded but a bit overblown) about lead form electronics products leaching into the environment when they are land
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