Electronics Forum | Wed Aug 10 02:38:36 EDT 2016 | zxcvb
I guess I've been somewhat ignorant when it comes to the finer details of pcb layout. Lately I've read a couple of books that try their best to lead me on the straight and narrow. Here is a couple of examples of a recent board of mine, and I have hig
Electronics Forum | Wed Feb 16 07:55:19 EST 2000 | Dave F
CK: I hear you about pads. Most secondary side SMT pads are primary side SMT pads that are on the secondary side. This only matters when boards are wave soldered. Rather than changing to larger components, consider a bigger fight than that ... ge
Electronics Forum | Fri Feb 11 13:36:40 EST 2000 | Finepitch Services
Jeff, I guess my experience in such issues always took me back to the screen printing process and I only want to bring up that portion of the possible causes to this case. When we talk about coplanarity, the component lead coplanarity first comes t
Electronics Forum | Wed Jun 13 03:37:06 EDT 2001 | ianchan
Hi mates, I did a recent shear test (destructive test), on a uBGA liken product, and noted the post-shear solder joint, had clean "smooth" visual appearance under the uBGA pad, however the matching pcb pad was clearly lifted clean. Question: 1) how
Electronics Forum | Mon Nov 01 17:13:37 EST 1999 | Mark W.
Jason, What is the revision of IPC you are referring too?? IPC 610 rev. b requires 75% fill on classes 2 & 3. Class 2 does allow the exception of 50% fill if the PCB has a Metal Core or Thermal/Heatsink Plane provided that the solder extends 360 de
Electronics Forum | Sun Feb 21 17:39:59 EST 1999 | Walid Khalil
we are acompany under construction for producing assembled PCB for computer manufacturing .as we are one of the first in Egypt in the field. Hence if some body can tell us about what we might need in the manual insersion line ( production &qualit
Electronics Forum | Wed Feb 10 18:17:46 EST 1999 | Earl Moon
| Hi, | | Has anyone found any significant differences on profiling using populated and unpopulated boards? Is it worth sacrificing a board to the profile gods? | | Joe | What's the cost of not doing it. In the same breath, why not wait for a sc
Electronics Forum | Sun Nov 22 06:58:36 EST 1998 | Kallol Chakraborty
3 lyr with gnd /pwr plane (most of the mixed has sheilding). I guess I am just repeating what Earl has said earlier. It would be nice to ask them for sub-ing it out for scoring as sometimes it is hard to route (SS or DS). I am pretty sure that
Electronics Forum | Tue Jun 02 20:26:17 EDT 1998 | Anthony
Does anybody know if a contraption exists that will minimize a PCB's tendency to become slightly bent after reflow? We have a new product that we're planning to assemble in a couple of months. The board is 9.7" by 13.4" and it is imperitive that we
Electronics Forum | Thu Aug 09 23:11:23 EDT 2001 | davef
Cheery disposition??? Would a few ;-) ;-) ;-) help? [Oh and look who is talking, the one planning the Mickie D gig after the traces on the this board start vaporizing with the fuseable link schtik.] Are you sure you're getting flux all the way up
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