Electronics Forum | Thu Jan 23 08:31:44 EST 2020 | dontfeedphils
I've had to order the PCB and stencil from aftermarket sources in the past, but I can't find the info anywhere on the stencil/hole grid. All I have is this manual. I believe I actually rented the PCB/stencil from PPM, then ordered my own replacemen
Electronics Forum | Fri Sep 11 00:56:44 EDT 2020 | rsatmech
Thanks for your inputs. Soak - 120 to 180 at average 110sec Paste - Senju - S70G - Type 5 (also suspect paste chemistry yet it's customer defined I can't do anything about this) N2 - maintaining O2 PPM at 1000 Stencil - planning to reduce the stenci
Electronics Forum | Thu Dec 21 11:50:55 EST 2023 | bobpan
Not many people use the vision on spin failure for 0402 parts. I would focus on repeatably picking the part from the feeder. If you insist on using vision then maybe you can take a permanent marker and darken the nozzle tip. Dont use a sharpie as it
Electronics Forum | Fri Dec 22 16:28:07 EST 2023 | jeana
I've tried yesterday, I've spray painted a XF nozzle with mat black paint. (with some protection on the tip obviously). It is not really succesful though, Vision still have false detection. When a part is indeed on the tip, it detects it but with
Electronics Forum | Fri May 15 09:07:12 EDT 1998 | Earl Moon
| | I hear that there is a problem with using ceramic parts that are sizeable. Apparently, there is a mismatch in the Temperature Coefficient of Expansion between the FR4 and ceramic materials which causes the soldered erminations to weaken and event
Electronics Forum | Tue Aug 28 13:46:46 EDT 2001 | mparker
To clarify on "Opportunities"- With 1000 components, the opportunities are far greater than 1000. You have 1 opportunity per component for a component defect i.e. bent lead, damaged part, tested bad, etc. You have a second opportunity per component
Electronics Forum | Mon May 24 06:00:23 EDT 2004 | johnwnz
call me picky but doesn't hydrogen combust? maybe soemthing you could do is look at your process and your products and decide if you actually need to run in N2. Yes ok I can hear the crys now but seriously, for the vast majority of things if you have
Electronics Forum | Thu Jan 04 17:04:43 EST 2007 | slthomas
99% good solder joints = 10000 ppm (defects per million opportunities). Having only built with 0603s I can't speak for a target but that still seems pretty harsh....with a 75/25 0805/0603 ratio at my last place of employment I think we were running
Electronics Forum | Fri Oct 17 22:36:35 EDT 2008 | arosario
Hi All, We just started build a new product and I am encountering many non-wet rejects in our new product. I need help on what should I look into to improve our Yield. Please see below back ground 1. We are using DEK Infinity as printer. 2. We are mo
Electronics Forum | Wed Oct 29 06:17:45 EDT 2014 | julianf
As stated in the title I would like to know the thermo-elastic material properties, most preferably the E-modulus and CTE in x- and y-direction, for Epoxy/E-glass laminates and/or prepregs for various fibreglass cloth styles. Datasheets only give ro
