Electronics Forum | Tue Mar 08 02:28:03 EST 2011 | nagesh
I have an issue with PLCC Insufficient Heel solder joint fillet.The aperture dimension is : 30 x 100 mils on PCB & on stencil also(1:1 per gerber).Rohs Process. My stencil thickness is 5mils due to presence of Tssop & QFP package & i cannot increase
Electronics Forum | Tue Jul 07 12:52:02 EDT 1998 | Upinder Singh
Thanks Earl. Well following is the data regarding the product. 1. The panel consists of 21 boards. 2. The surface I mentioned would have 3 SMds and 1 T/hole connector. 3. PCB thickness is 55 mils and the width of the hole on the PCB for the thru-
Electronics Forum | Fri Apr 23 14:14:49 EDT 1999 | Chrys Shea
| Hi everybody, | | I would like to bench mark the quality out of our wave soldering m/c as far as DPPM levels are concerned. Can somebody provide me with some figures at their site or anywhere else for the same. | | Thanks | Upinder | ====== | We
Electronics Forum | Mon Jan 04 23:15:35 EST 1999 | Kris Ewen
Where I worked, we used 0.014" square aperatures (several mfgs. have proven the benefits of square & I've seen a better transfer efficiency myself). Some mfgs use smaller edge lengths & have had success. 0.005" thick stencils give better transfer e
Electronics Forum | Tue Sep 12 16:27:20 EDT 2006 | EK
I'm in the market, also, but vasilating over cost vs performance. I've also used both. In general, the LPKFs have more bells and wistles. On the LPKF S62, I love the tool magazine, and vacuum table. And, the fiducial recognition camera is great o
Electronics Forum | Fri Jan 05 10:15:55 EST 2007 | Cmiller
I have a customer working on a new design of a rather large board that needs to use a micro BGA that will require 8 layers. He needs to use that BGA and it does not come in any other package. He asked me about making the BGA an adapter or daughter bo
Electronics Forum | Mon Jul 18 21:36:18 EDT 2022 | ttheis
We have two GSM machines (4-spindle, single beam) and had a camera fail on one machine. We decided to clean and calibrate the cameras on both machines. One machine we had no problems and all is working properly. The other machine will not pick up the
Electronics Forum | Thu Apr 29 10:02:07 EDT 1999 | Chrys Shea
| Anyone using hot air nife for wave soldering process. | Does it work? | Does it really eliminate solder bridging and does it create any other problems? | | any feed back will be much appriciated. | | Thanks | | Tony A | | Tony, The hot knif
Electronics Forum | Fri Nov 30 18:22:40 EST 2007 | mika
Hi Paul M, There are no silly questions but silly answers.. and here is maybe a few if I understand you correctly: If you consider place anything less than a 1.27mm (50mil) pitch component down or a chip less than a 1210, hey it maybe don't even work
Electronics Forum | Wed Mar 27 20:21:57 EDT 2013 | vitroblue
Hi I was looking for the development board of a MCU i was asked to evaluate, but upon checking out the gerbers i found something weird this pcb is a 4 layer stack 1 smd connections 2 gnd 3 vcc 4 thd connections question 1) in this case, i'd place o
