Electronics Forum | Fri Feb 25 02:30:32 EST 2011 | pkannan
Dstadem, Thanks for bringing your in valuable experience with the J STD 005 " Requirements of Solder Paste". I fully agree with you that the Solder Paste can be qualified for shelf life by doing simple viscosity test and visual inspection for coal
Electronics Forum | Mon Oct 14 19:59:17 EDT 2013 | hegemon
We do in fact see a reduction in soldering defects, most especially wetting issues for both parts and PWBs, tombstones, billboards, etc... As a CM we see all kinds of customer furnished material, some of it not in the greatest condition. Our best p
Electronics Forum | Wed Feb 05 08:51:13 EST 2014 | emeto
What I think it does is to calibrate the camera. You have your tube on the bottom and your camera on the top. For my machine(Dage) I have to put the board I am going to examine inside and select a point on the board surface. THen I just click on this
Electronics Forum | Fri Sep 05 06:17:36 EDT 2014 | edriansyah
Hi, We have a problem with our BGA Pad. Our PWB manufacturer make the BGA Pad in irregular form. some big, some small. Please see the picture on attachment. BGA Detail BGA Pitch 0.5 mm BGA Ball 0.3 mm BGA Pad (big) 0.2 mm (as per gerber) BGA
Electronics Forum | Thu Feb 05 02:30:00 EST 2015 | sarason
We were using TL1240Y Tack switches for 2 layered > PCB and posted those switches by hand. Now > planning to re-spin PCA where we recommend that > part to be added on SMT process. So looking for a > better and opt switch with same specs. Please
Electronics Forum | Wed Jun 03 15:45:36 EDT 2015 | ldempsey
Well, it took me a while but I had a look at some gerbers. On a PCB with neighboring 0402's 0.006" apart, and paste reduced 0.75mil on each side, I get lots of bridging. On a later rev of the same PCB, we have neighboring 0402's 0.018" apart,and pa
Electronics Forum | Fri Jun 02 02:25:57 EDT 2017 | neoply
Hello all.Thanks for taking up your time to read my post. Especifically talking, I need to demodulate a low frequency FSK signal( betwen 120 and 140 kHz ). I already have a circuit of antenna that receive the signal and I already can sample it, but
Electronics Forum | Fri Feb 09 02:46:45 EST 2018 | robl
Thanks Capse. Hi Rick, We have Asys and Cencorp inline routers, both are very good. Our models are ADS01F, Cencorp 1000BR & 1300BR. One thing to remember is that if you have tight finished tolerances make sure you get the fiducial alignment option
Electronics Forum | Mon May 20 16:15:48 EDT 2019 | davef
Resources are: * IPC-7525A - Stencil Design Guidelines, 3.5.2 Step-Up Stencil This type stencil is useful when it is desirable to print thicker solder paste in a small portion of the stencil. An example would be a ceramic BGA where it is necessary t
Electronics Forum | Mon Aug 10 11:50:58 EDT 2020 | 389394103
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