Electronics Forum | Wed Jan 03 02:12:48 EST 2018 | michelle01
Hi All, > > We have a project and need produce > 500pcs pcb board for smart phone. There are two > kinds of supplier for pcb fabrication, one is > professional prototype for small volum, another > is factory for big amount. I don't know how to
Electronics Forum | Sun Jan 21 16:42:35 EST 2001 | davef
I just can not get over the size of these crystals. What is the chronology of and the span of the thermal cycles this BGA has seen.[Just guess at the fabrication cycles, if it's difficult to determine]
Electronics Forum | Thu Oct 12 08:46:16 EDT 2000 | T Jones
Several online PCB fabrication quote forms offer SMOBC as a surface finish along with HASL, Ni/AU, etc. How does one specifify SMOBC for traces and untented vias, and elctroless Ni/Au for smt pads? Are these processes mutually exclusive? Or can I g
Electronics Forum | Wed Jul 12 21:39:46 EDT 2000 | Dave F
George: Interesting. I've found a couple of sources for antistatic Acetal. OK. To the point: I don't know, but I plan to talk to slective wave solder fixture fabricators. Several are listed in the archives Good luck
Electronics Forum | Wed Jul 05 20:50:42 EDT 2000 | Dave F
Hey KC roll-up IPC-A-600 and smack those bums on the nose with it and say "Bad fabricator don't do that on the floor again" in a firm voice.
Electronics Forum | Tue Jan 16 07:02:47 EST 2001 | You Kim Huat
HI, Can someone advice me, is there any guideline to determince the opening for stencil during stencil fabrication. Also is there any method to determince whether the solder paste amount is enough during this process.
Electronics Forum | Tue Jan 16 07:07:03 EST 2001 | You Kim Huat
HI, Can someone advice me, is there any guideline to determince the opening for stencil during stencil fabrication. Also is there any method to determince whether the solder paste amount is enough during this process.
Electronics Forum | Wed Jan 31 20:17:19 EST 2001 | davef
Programmers are: Intrinsic Quality (HP≥nRad) 708.259.5060fax5399 Solution Sources Programming (HP≥nRad) 408-487-0270 Fax 0288 Modem 0287 http://www.ssprog.com They will be happy to suggest fixture fabricators
Electronics Forum | Mon Apr 23 20:33:37 EDT 2001 | davef
I agree that solderability is THE issue, but we choose not to get into that pissin' contest. [We don't like the selected test method, either.] We believe that our coating thickness spec provides: * Solderability level that we seek. * Repeatable tes
Electronics Forum | Mon Apr 30 09:20:50 EDT 2001 | Steve Zanola
We have seen the same thing. Our vendor recently change the way the BGA is fabricated and the new package warps. We are currently trying to adjust our process paramentes to fix this problem. I will try the "bake out" suggestion and see if it cor
