Electronics Forum | Thu Aug 03 12:02:50 EDT 2000 | James
Does anyone out there use a semi-automatic clamshell printer in production with pitches down to 20 mil? I would appreciate any advice you have on process control and setup parameters for this type of printer. James
Electronics Forum | Mon Feb 19 11:48:32 EST 2001 | martys
We are looking at some applications that will require fine-pitch and possibly ultra fine-pitch. I am currently using a spray type batch cleaner for cleaning our stencils. Will this be adequate for fine-pitch (15 � 20 mil pitch) applications?
Electronics Forum | Thu Oct 26 14:51:46 EDT 2000 | eramirez
Currently I am running a very dense PCBA using a PCB less than 20 mils thick. We have two facilities running this product. One is using Nitrogen during reflow one is not. What is the advantage and disadvantages of using Nitrogen during the reflow
Electronics Forum | Thu Aug 24 13:31:41 EDT 2000 | Dr. Ning-Cheng Lee
For 20 mil pitch applications, two important properties to evaluate are (1) dispensing volume consistency, (2) slump performance. As to the dispensing equipment, positive displacement will be the better choice for better consistency. Nozzle size is v
Electronics Forum | Fri Aug 27 13:31:47 EDT 1999 | swsng
1.5 FATOR FOR 20MILS QFP REDUCE 2 MILS HEEL AND INCREASE 2MIL AT TOES AT SIDES -1MILS EACH. SWSNG
Electronics Forum | Tue Mar 09 16:31:47 EST 1999 | SMTASSY
Yes Nancy when it comes to PLCC or anything bigger then Som, so16 we too use vacumm pens. The initial comment was regarding passive compoents. As for the fristch semi : the vision system is the only thing that is still being used for: 20 mil QFPs
Electronics Forum | Thu Jan 21 16:00:42 EST 1999 | Derek Drabenstadt
I'm currently planning to do an evaluation of RMA flux solder pastes for mil type applications. Does anyone have any suggestions for vendors to try? I'm especailly interested in pastes that aid application on boards with 20 mil pitch.
Electronics Forum | Sun Jan 24 14:01:56 EST 1999 | Daniel
| I'm currently planning to do an evaluation of RMA flux solder pastes for mil type applications. Does anyone have any suggestions for vendors to try? I'm especailly interested in pastes that aid application on boards with 20 mil pitch. | "KOKI 95
Electronics Forum | Mon Jul 06 20:32:34 EDT 1998 | Chiakl
Hi there, I am looking for some informations concerning the shear or pull strength of a typical TQFP 20 mils leads in relationship with the Copper/Tin intermetalic layer thickness. Could anyone help? Thank in advandce. rgs, chiakl
Electronics Forum | Sat Apr 25 08:48:45 EDT 1998 | raymond
Is there an industry standard in calculating SMT process PPM level for benchmarking purpose ? What are the industry benchmark ppm number for some of the defects like solder short for 20-mil QFP, tomstone problem for 0603 components etc....
