Electronics Forum | Thu Sep 23 08:47:25 EDT 2021 | majdi4
1)Though in many cases the difference between SAC305 and SAC405 was small,and not always statistically significant, it was observed that SAC405 generally outperformed SAC305 joints. Under 0°C to 100°C thermal cycling,no statistically significant
Electronics Forum | Mon May 23 14:16:28 EDT 2022 | spoiltforchoice
OK, well as a small CEM I've dabbled in this area because when you are small you end up doing some of this work in house without specialist web knowledge. This frankly isn't easy, as you are selling a service rather than a physical product and hundr
Electronics Forum | Tue Jul 26 13:04:02 EDT 2022 | kumarb
Hi. Sharing a new contact we have from a company in Shenzhen that has a focus on refurb machines that may be worth a quick call: www.qy-smt.com smtripathy[at]qy-smt.com They apparently setup up shops even on a rental basis! Unbelievable that they w
Electronics Forum | Fri May 26 04:58:19 EDT 2023 | auriga2001
I agree with the two other replies. Left alone, it is a defect. If it's just excess adhesive or coating, you can use IPC-7711/7721 'Rework, Modification and Repair of Electronic Assemblies' for guidance on removing. Section 2.3.1 explains how to te
Electronics Forum | Fri Jun 02 04:45:44 EDT 2023 | calebcsmt
Totally agreed regarding underlying issues if we were continuously on the edge of defects. I think the question for me becomes, when a customer isn't specifying requirements or any particulars: at what point is reworking pointless/waste of time &
Electronics Forum | Fri Jun 02 14:42:06 EDT 2023 | tommy_magyar
"If for example a customer requested assemblies but never specified their requirements, would MFGs be expected/required to follow parameters from a specific class related to the end use of said product?" Answer: The customer placed an order with you
Electronics Forum | Tue Jun 20 16:09:29 EDT 2023 | nickadams
We have a Contact System CS400E with a Rotary Bin model CS201 with 90 bins and we're sort of new to programming it and are wondering how we can program the bins so that we can assign a part number to a bin. What happens now is it always goes to the f
Electronics Forum | Mon Aug 17 02:50:44 EDT 1998 | Bob Willis
| Have an SRT w/preheat, 18 layer board all copper, 456 BGA needs to be removed and replaced. The manufacturer is Chip Express and during reflow it warps up or down. Causing either opens or shorts on the corners. I was using gel flux with multiple
Electronics Forum | Mon Feb 14 12:07:47 EST 2000 | Dave F
Leslie: Product screens and tests of prototypes and test vehicles should be tailored for the specific goal and product. I caution your use of equations and test condition information without specific use environments and design conditions. Lawyer:
Electronics Forum | Tue Aug 01 09:42:07 EDT 2000 | Gary
The Technical Services Group at Alpha Metals has spent a fair amount of time looking at wave soldered Pb-free connections. We too have observed fillet tearing, fillet lifting, and pad lifting. I have concluded that without major changes in the mate
