Electronics Forum | Thu Aug 13 12:55:46 EDT 1998 | Dave F
| Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | Xingsheng Xingsheng: Welcome. Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill Web resources: http://www.pwbrc.org/ a
Electronics Forum | Mon Apr 23 07:19:23 EDT 2001 | dahsr
Can I have solder bridging two SM rectangular chip components due to misalignment? The bridging occurs at one end and is on a common trace between the two pads. The components are larger than the pad (side overhang) and are aligned rather perfectly w
Electronics Forum | Mon Jun 07 20:06:45 EDT 1999 | Frank
Thanks for the clarification! So in generic settings what are the normally the components with the smallest pitch? Will a machine with 20 mil capability handle almost anything? | | I was wondering what measurements are used to define pitch? | | |
Electronics Forum | Mon Aug 08 22:32:18 EDT 2005 | adlsmt
If you are using fine lines and tight spacing ENIG may be cheaper than HASL. This is because there is not as much bridging at the board house between traces so they do less touch up. This would probably be even more true with no-lead. We have been us
Electronics Forum | Mon May 04 10:49:55 EDT 2015 | scott00
Thomas, I know a HDI PCB house from China,They manufactured some high complex HDI jobs for me,some HDI pcbs are 10L(3+4+3),(4+2+4),and 12L(4+4+4),and some HDI pcb jobs are 2/2mil min trace width/space,the quality are very nice,you can make a try.t
Electronics Forum | Fri Jun 12 11:06:53 EDT 2015 | booth
Hi Scott, Mark Wang just manufactured a 8L(2+4+2) HDI pcb prototypes for me,the PCBs min trace width/space is 2.75/3mil,I worried about the quality very much when I place the pcb job to Mark.but in fact,the 8L(2+4+2) pcb's quality is very nice,I w
Electronics Forum | Fri Sep 11 14:39:02 EDT 1998 | Earl Moon
| Thanks to all Earl, Mathew and David for the SMT info. I have one more question. Does anybody have a chart listing the standard, industrial spacings? Perhaps listing in each unit, say XX mils = XX Pitch. Or XX mils = XXmm or something of that n
Electronics Forum | Fri Aug 14 07:27:42 EDT 1998 | Earl Moon
| | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | Xingsheng | Xingsheng: Welcome. | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | Web resources: http://www.pw
Electronics Forum | Fri Aug 14 08:59:51 EDT 1998 | Dave F
| | | Hi, can you please tell me how to make green coating and through-hole plating of PCB? Thanks! | | | Xingsheng | | Xingsheng: Welcome. | | Bible on PCB fabrication: Printed Circuits Handbook, Clyde Coombs, McGraw-Hill | | Web resources: htt
Electronics Forum | Thu Oct 26 17:48:47 EDT 2000 | Dave F
In response to your questions: 1) Suggestions on substrate material FR-4 or something better? Most PBGA are on BT. That might good for you, also. 2) Are there design guidelines for wire bonding pattern on the substrate? Several things: 1 Doesn�t
