Electronics Forum | Fri Aug 17 11:55:31 EDT 2001 | davef
5uin. Your nickel thickness is fine. Although if you wanted to trade costs, consider giving-up nickel to 150uin thickness, while increasing the gold thickness. Gold over electroless nickel creates brittle joints because of phosphorous in the nicke
Electronics Forum | Tue Aug 28 16:44:27 EDT 2001 | davef
Several points are: * Some may argue that DPMO is peculiar and specific. That�s why IPC-7912 states �Users of this document are cautioned when comparing one manufacturer�s indices to one another due to differences in assembly complexity and the amou
Electronics Forum | Mon Sep 03 08:56:26 EDT 2001 | henriksn
Hi everyone, I work in a development firm, that has a small prototype department. We have recently invested in a small automatic SMD pick&place machine. When mounting over 100 different components, the machine runs out of feedercapacity, and the res
Electronics Forum | Wed Sep 05 08:50:04 EDT 2001 | davef
No arument with others comments about moisture, but taking a different tact, consider that the volitle elements of the solder paste disppear as a function of the amount of time the paste is out of the container. [Maybe as a function of solder paste
Electronics Forum | Tue Sep 18 16:48:55 EDT 2001 | jschake
Why do you think that assembling the BGA, QFP, and fine pitch parts will solve your bridging problem? I would think doing this may cause you more grief by having these more massive components being reflowed upside down fall off during the second pas
Electronics Forum | Wed Sep 19 09:34:08 EDT 2001 | jschake
Both FormFlex and Grid-lok tooling systems are marketed as compliant tooling systems. Both are able to conform to the variations of the topography on the bottomside of a substrate to provide full support during printing of 2nd side assembly. The ba
Electronics Forum | Thu Sep 20 09:12:28 EDT 2001 | jschake
If you were successful in running the machine in dry cycle mode, then I would expect with new squeegees that the prints would be acceptable. To give you more tangible data on what you may expect from the actual print results, maybe you could run the
Electronics Forum | Tue Sep 25 18:55:20 EDT 2001 | Xianming
Hello friend, I'm sending this message out because I may get some help from you. Right now I am doing a project titled "Applying artificial neural networks and virtual experimental design to quality improvement". The thing is that I need some re
Electronics Forum | Wed Oct 03 09:26:19 EDT 2001 | davef
Whether the customer is from a large or small corporation, military or commercial, the majority of our data comes in RS274X. In theory, ODB++ seems like a good idea. It may take some time for it to actually get into the mainstream where we are. It
Electronics Forum | Mon Oct 08 22:43:13 EDT 2001 | caldon
No wizard here just a troll....Sorry I can not spout a Fountain of information Like "The Dave F" but here is an additive..... Having worked at a Lab for testing Soaponifiers, cleanliness, and contamination when a customer says "we had a lab check it
