Electronics Forum | Mon Aug 24 21:16:57 EDT 2020 | smith88
I am trying to teach a class and the question came up about loss of metalization of the Earth pad on a chip filter. This pad is on the side of the component. I can not find a IPC call out for this type of side termination other than 3 or 5 sided 9.1.
Electronics Forum | Mon Sep 17 16:03:13 EDT 2001 | jschake
The results from an experiment comparing 27 different combinations of pad dimensions concluded that the pad design with 15 mil pad length, 12 mil pad width, and 9 mil pad separation produced the best assembly yields. A 5 mil thick laser cut stencil
Electronics Forum | Wed Mar 25 19:31:13 EST 1998 | Earl Moon
| | We are having some problems with "drawbridging" on 0805 film capacitors. | | We have already reduced the pad width from .050" to .040" based on input | | from vendor. Defects appear to be random as far as location on the PWB and direction | | o
Electronics Forum | Sun Mar 29 15:42:05 EST 1998 | Michael Fogel
| | | We are having some problems with "drawbridging" on 0805 film capacitors. | | | We have already reduced the pad width from .050" to .040" based on input | | | from vendor. Defects appear to be random as far as location on the PWB and direction
Electronics Forum | Mon Mar 30 07:44:12 EST 1998 | Earl Moon
| | | | | We are having some problems with "drawbridging" on 0805 film capacitors. | | | | We have already reduced the pad width from .050" to .040" based on input | | | | from vendor. Defects appear to be random as far as location on the PWB and d
Electronics Forum | Fri Feb 14 08:08:45 EST 2003 | Louis
First of all I would like to say that my English is so-so but I will try to help you. FOLLOW THOSE STEPS AND YOU WILL BE OK. 1-- select learn fiducial option then enter minimal value to fiducial width and height (enter 0 and you will g
Electronics Forum | Thu Apr 12 22:54:06 EDT 2007 | mika
conductor on the narrowest place ~0.07mm we suggest them to go for a PCB solder pad down to 0.30mm. The Conductor width is: 0.2mm The current problem they are having now is that there will be a problem with 14V to narrow the conductor to the narrowe
Electronics Forum | Tue Jan 30 15:30:17 EST 2001 | dason_c
Please check what is the actual pitch size. I found some of the designer use 15.7 mil pitch and no accumulate ie 15.7, 15.7 and 15.8...... Also, I recommended the pad width should be 10 - 11 mil for 0.4mm pitch. You can open the 10 - 10.5 mil aper
Electronics Forum | Tue Jan 30 21:14:26 EST 2001 | davef
Suggestions are: * Limit pad width to 0.008" [0.2mm] * Use IPC-7525 Stencil Design Guidelines * Avoid Type 4 pastes, if you can * Slow down your print head to 0.63"/sec [16 mm/sec] * Consider the suggestions on printing by rpereira in the past
Electronics Forum | Thu Nov 01 13:08:33 EST 2001 | dave231
I am just starting to get into sub 50mil pitch, but from what I can see you are correct. But I can help with solder stencil. I cut the width only half of what the pad is, but the keep the length the same. This has helped but does not fix always. Stil
