Electronics Forum | Thu Feb 07 12:18:41 EST 2008 | tonyamenson
Does anyone use or have any simple wave/reflow oven exhaust monitors with a visual check (LED). I was going to design something crude resembling a fan with an electric winding (electric motor of sorts)and a load (resistor maybe with a transistor if
Electronics Forum | Wed Mar 12 13:41:23 EDT 2008 | swag
We have a lead free assembly with a 128-Pin PQFP with 20 mil pitch leads. We have tried stencil aperture reductions, step-down stencils, different thickness stencils, various printer setting changes, placement pressure changes, nozzle changes, moved
Electronics Forum | Tue Apr 22 03:46:19 EDT 2008 | fowlerchang
It is CSP reliability issue, which is the mobile CPU from Spreadtrum. All the tests passed and shipped to customer. They assembly them and tested but failed. After they reflow this CSP with hot air gun, some of the boards passed. We got some board
Electronics Forum | Fri Apr 18 07:50:10 EDT 2008 | scottp
I'm curious if anyone has figured out a clever way to errorproof this. We're exempt from RoHS so we have mostly SnPb products but some Pb free ones at customer request. Of course, we have methods to control moisture sensitive parts, but I worry tha
Electronics Forum | Thu May 08 09:36:23 EDT 2008 | ck_the_flip
CSullivan, On the great SMTNet archives, there was much discussion about how to run in this scenario. Here is one such thread: http://www.smtnet.com//forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=10483&#Message42337 Also, I wouldn't "
Electronics Forum | Thu May 08 12:11:30 EDT 2008 | boardhouse
Hi Wayne, I am just curious what material is being called out. Are you just specing FR4 or are you calling out a particular IPC 4101 / Some recommended laminates designed for Lead free assembly are: Isola 370HR Nelco 4000-11 or 4000-29 Iteq IT15
Electronics Forum | Tue May 13 09:58:50 EDT 2008 | rgduval
Thanks, Dave, To the 183 TAL...I was just referencing a previous post I found in the archives. We checked the profile on the board this morning, absed on the temp info that AIM recommended, and found that we're above liquidous for nearly 2 minutes!
Electronics Forum | Sun May 25 10:30:31 EDT 2008 | necdetozyonum
Dear All, I would like to take your opinion about the result that we have faced after cleaning the PC assemblies in a cleaning machine (Miele Dishwasher) with the cleaning detergent Qualitek Everkleen 1005. We use DI water for cleaning purpose in t
Electronics Forum | Sat Jun 21 23:15:07 EDT 2008 | mika
Also keep in mind that the CCGA column length tolerance is at minimum +/- 0.13mm from most part manufactures and they don't collapse in the same way as a BGA, therefore the paste height deposit could be critical in some rare circumstances. Board warp
Electronics Forum | Mon Jun 23 19:33:09 EDT 2008 | adamcrum
Hello, I have a Philips Assembleon Topaz (not an X or XII, just Topaz), that we got from a broker or what have you. I just did a complete rebuild of the head assembly after some of the shaft bearings went out and was getting ready to do the auto moun
Manufacturer of PCB depaneling and PCB soldering machines since 2005, products include CE approval V-groove PCB depanelizer, PCB router, PCB punching machine, laser depaneling, hot bar soldering machines and soldering robots.
Liwu Industrial Park, Yuanzhou Town, Boluo
Huizhou, China
Phone: +86-138-29839112
