Electronics Forum | Wed Mar 24 12:34:33 EST 1999 | Scott McKee
| Hi, | I have a customer who's electronic assemblies produce RF. He is insisting upon aqueuos cleaning. We switched to a no clean solder years ago and no longer have an aqueous system. | Is aqueous cleaning necessary to eliminate 'cross talk' of
Electronics Forum | Wed Mar 17 17:53:12 EST 1999 | Steve Skinner
| | Does anyone have any recommendations on spray fluxers? Are there major differences between the high priced ultrasonic machines to the low priced flux/air spraying machines? We are going to be spraying an OA flux with 11% solids content. Are there
Electronics Forum | Wed Mar 03 17:09:55 EST 1999 | Tom Reilly
We have recently had problems with bare boards coming in too thick. I would like to know how to properly specify the minimum and maximum thickness using the 13949F and IPC 4101 specs. (We currently use "MATERIAL: GFN 0620 C1/C1 A2A per MIL - P - 1394
Electronics Forum | Thu Jan 28 15:53:12 EST 1999 | Dave F
| | Hello Netters, | | | | I need some info, Earl or Dave, I have a PCB that exhibits a white layer on solder side. It does not appear to be surface residues (IPA has no effect), but looks like its under solder mask. My first guess is that the LPI
Electronics Forum | Wed Jan 27 09:00:56 EST 1999 | Chris Fontaine
| | I have boards coated with Humiseal 1B73. At a late point mfg. site we need to remove a series of 0603 resistors for optioning purposes. I have been trying to determine the fastest, easiest way to re-coat the pads after removal. Drying time of the
Electronics Forum | Fri Jan 15 11:28:50 EST 1999 | Bob Willis
| | Folk's, | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do you h
Electronics Forum | Fri Jan 15 14:45:48 EST 1999 | Earl Moon
| | | Folk's, | | | | | | I'm looking for information of how long you cna store a gold finish PCB before building it. I know there are problems with the gold disappearing into the underlying nickle over time / temperature etc but exactly how long do
Electronics Forum | Thu Jan 14 13:25:53 EST 1999 | Chrys
| Hi Folks. Has any Process Engineer here done a complete evaluation or controlled experiment for VOC-FREE Flux? Our goal here at CEBUKid, Inc. is to implement a VOC-FREE process. We have all the necessary (OPTIFLUX) spray equipment, and we're cur
Electronics Forum | Mon Feb 22 16:39:33 EST 1999 | C.K.
| | Hi Folks. Has any Process Engineer here done a complete evaluation or controlled experiment for VOC-FREE Flux? Our goal here at CEBUKid, Inc. is to implement a VOC-FREE process. We have all the necessary (OPTIFLUX) spray equipment, and we're c
Electronics Forum | Tue Jan 12 15:11:20 EST 1999 | Earl Moon
| | I have an Electrovert UPK 660c fitted with IR preheats top and bottom. We assemble a large range of multilayer backplanes and I was wondering if there are any advantages in changing to convection preheats.Has anybody got any views on the subject.
