Electronics Forum | Wed May 22 10:14:08 EDT 2019 | emeto
Matt, we did the study and YES perpendicular to the V-score is the worst case scenario. We did a cross section and confirmed component is cracked. If you don't have power over PCB design, the easiest way is to change board panelization or even order
Electronics Forum | Mon Jun 10 13:47:23 EDT 2019 | don_julio
First thing we did was visit the profile and we have it adjusted as far as we're willing to take it. I'm just going to make a carrier design in cad and have the board house produce some in their thickest substrate to see how it works out. Thanks.
Electronics Forum | Tue Jul 30 05:26:46 EDT 2019 | ameenullakhan
thanks dave .. I have one more query on the same CCGA. What are the chances of the CCGA lead getting bent or tilt during reflow soldering process. Concern : to achieve the minimum peak temperature of 208 deg C at the connecting leads. On bod
Electronics Forum | Fri Aug 02 10:06:37 EDT 2019 | davef
I don't get it. The liquidus of 80Pb/20Sn is like 280*C. Your reflow temperature got nowhere near that value. Where did that material go? Is it folded back under the component? Disappeared? Was it ever there? Ask someone while analysis tools to hel
Electronics Forum | Tue Aug 13 02:33:04 EDT 2019 | ameenullakhan
Hi , Thanks for the reply. Yes CCGA was checked before placement and sending to reflow oven. The latest suspect form few cross functional team member is like. It is due to improper reflow profile " Column kick out " has happen. I am
Electronics Forum | Thu Aug 01 12:58:07 EDT 2019 | davef
Look at: * Conformal Coating 101 - https://www.smta.org/chapters/files/UpperMidwest_BTW_Conformal_Coating_June_27th_2012.pdf * IPC Conformal Coating Course - https://edge.ipc.org/course/conformal-coating * IPC-CC-830: Qualification and Performance
Electronics Forum | Mon Sep 23 05:57:55 EDT 2019 | uzbek
Hi all, we have the opportunity to buy used Essemtec FLX2011 PnP machine. The machine is made in 2009 and the last two years it wasn't used. With the machine, we would get some feeders and all nozzles. Moreover, we would get the library from the EM
Electronics Forum | Tue Oct 15 16:48:04 EDT 2019 | davef
I assume you're playing us, but I've always been a tool. So, here are a couple of links that will help you get started in understanding "printed circuit boards: + Printed circuit board [https://en.wikipedia.org/wiki/Printed_circuit_board] + Printed
Electronics Forum | Tue Nov 05 11:53:50 EST 2019 | markhoch
Does anyone have any experience trying to solder Anticapillary or Silicone Blocked (SBT) wire? It's designed to inhibit wicking of liquids and unfortunately that includes molten solder. We're experimenting with it for a potential high volume applicat
Electronics Forum | Tue Nov 12 00:49:37 EST 2019 | myke03o
I am optimizing a stencil opening for BGA with 0.4mm pitch and pad diameter of 0.2mm. Can anyone advice of stencil thickness and stencil opening I can use in order to have a good paste release. Thanks for all your answers.
