Electronics Forum | Mon Apr 28 02:22:52 EDT 2014 | jkhiew
We found repeated pad lifted after different SMT Reflow temperature (eg: 243 deg C and 233 deg C) at an isolated slot. The PCB Supplier had claimed that such condition is acceptable as per IPC 600H Clause 3.3.2 (Cross Sections) - eg: Acceptable - C
Electronics Forum | Mon Apr 28 15:20:50 EDT 2014 | davef
Your customer is correct. Your supplier has clamped some sort of machine to your butt and has plugged it in the wall outlet. Honest mistake: * IPC-A-600H, 3.3.2 Lifted Lands - (Cross Sections) ... pertains to boards that were cross sectioned after t
Electronics Forum | Wed Jul 02 02:08:16 EDT 2014 | alexeis
Hi, What types of failures are discovered at specified? Is it the problems of deviations, angles or incorrect component form? Our customers use software tool QPlan to prepare placement programs (SMT SETUP). It includes simulation, automatic correcti
Electronics Forum | Thu Jul 10 15:03:57 EDT 2014 | alexeis
Hi, An answer to this question is very complex. The amount of components and their type is only one parameter to determine the level of failure. Additional parameters that can influence are: 1. The density components on the card 2. Machine type and
Electronics Forum | Mon Jun 01 04:35:16 EDT 2015 | buckcho
Hello, I have seen two different ways in two companies - one they do it before start of every batch, the others do it when a program is made. I am a fan of the first one, but it depends on company policy. Its good when you have to make a lot of chang
Electronics Forum | Mon Jun 01 05:20:57 EDT 2015 | alexeis
Hi, I agree with Buckcho. Further to what was said here, our customers perform preliminary simulations to discover potential problems in production. To do so, they use software tools such as QPlan and QPlace UPD. QPlan automatically detects and fix
Electronics Forum | Sun Feb 21 09:02:38 EST 2016 | alexeis
Hi, We have developed solution, called QPlan, that is reading CAD (different formats), merging it with BOM (including check of BOM and compare exceptions), comparing with your history library of Assembleon/Philips, simulating SMT process with automa
Electronics Forum | Thu May 12 02:17:58 EDT 2016 | cspasol
Thanks Mr. Darby, We already Check All connections of I/F Boards, Restore OS, Change Motherboards and Install Backup for SmartSM files and Install new MMI (SmartSM files). But still same Problem. I have one possible cause in my mind is its MVME3100
Electronics Forum | Tue Jan 09 17:37:00 EST 2018 | tozitom
The truth is that TH will give you better > mechanical stability. If it is a part where you > risk strip off the pads of SMT connector, don't > make this transition to SMT. If it is a one time > cable plug there and there will be not too much >
Electronics Forum | Wed Jan 10 04:33:05 EST 2018 | spoiltforchoice
Simulating with what? In developed countries manual labour is expensive but is also still the most common solution to fitting though hole parts, even if the board are then wave-soldered. Mixing SMT and THT on what sounds like a very simple product wi
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