Electronics Forum | Thu Jan 10 18:32:20 EST 2008 | stevek
Our layout guy recently started making land patterns with the corner lands oversized. These are for leadless and various flatpack parts. He claims this is to improve manufacturing. I had seen a few boards with this just as I got out of the CM worl
Electronics Forum | Tue Oct 13 12:32:43 EDT 2009 | davef
2.6.3 Test Pad Location Tolerances, third bullet. Why does Entek require different test point spacing than other surface finishes? Page 55, top image is off the page, partially. 2.3.6 Depanelization of Arrays, 10th bullet [Breakaway Scoring] refers
Electronics Forum | Sat Jan 30 16:42:32 EST 2016 | davef
Many board fabs help their customer understand the importance of copper balance. Copper balance * http://www.multi-circuit-boards.eu/en/pcb-design-aid/copper-balance.html * http://electronics.stackexchange.com/questions/85633/what-is-copper-thiev
Electronics Forum | Fri Jun 18 20:09:52 EDT 1999 | Dean
| Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems. | yes, 8 years ago I developed
Electronics Forum | Tue Feb 23 11:09:12 EST 1999 | Steve Gregory
Hi Dave! Dat' be da same board we ran at NEPCON East in 97'! Ray Rua was running the TAC line then (his company usually runs the TAC line at almost all NEPCON shows). A couple of things I wanted to point out on that GIF image that might b
Electronics Forum | Tue Aug 04 12:15:33 EDT 1998 | Steve Gregory
| | | | I am looking for some design guidelines (length, width, spacing) for solder thieves which are placed behind trailing pins of wave soldered SOICs. I'd appreciate it if some one could direct me to the appropropriate reference. | | Also, has an
Electronics Forum | Wed Feb 20 19:57:27 EST 2002 | davef
THIEVING * Layout: I�d guess the surface area of your thieves is not large enough. The pull from the thief is not great enough to over-come the pull from the connector pins and pads. Consider tripling the size of the thief. As you say, reducing t
Electronics Forum | Sun Feb 13 01:35:55 EST 2000 | Dean
Without further information my first guess would be lack of flux to "cut through" the ENTEK layer. Question: In X-ray is the suspect ball of equal diameter when compared to adjacent balls? If no then the volume of solder is different which would po
Electronics Forum | Thu Jul 27 12:54:53 EDT 2000 | John Thorup
Hi Jason I think Wolfgang has this one nailed. If it's the same four pins every time and nothing changes this, even rotating the board 90 degrees, then you're probably going to find something like a ground plane connected to them. I don't think sol
Electronics Forum | Sat Jul 29 00:44:30 EDT 2000 | Jason
Thanks for all the ideas. I tried solder "thieves" by placing some desoldering wick behind the briging pins and it worked! I have yet to try Chrys' idea but I will first thing Monday. This is a new board that has had this problem from day one. I
.png)
