Electronics Forum | Wed Oct 28 02:03:18 EST 1998 | Erhard Hofmann
| | | We currently using the Panasert SMT machine where PCB flow | | | direction were from right to left, & we are planning to move | | | in the FUJI -CP3 & CP4-2 in line where standard PCB | | | flow direction were left to right. | | | Any comment o
Electronics Forum | Fri Oct 16 21:17:04 EDT 1998 | Scott McKee
| | With current soldering of stranded wires to pcb assy's the wire tends to be very brittle and can break with very little movement of the wire. We use a low residue cored wire. Anybody with advice or who has seen a similar problem/knows how to over
Electronics Forum | Thu Oct 15 14:23:31 EDT 1998 | Earl Moon
| I have a problem with measling on our PCB's. We saw it on our FR4 PCB's at final assembly yesterday. Is this a defect from the board vendor or something we did in our assembly process when building the PCA's (thru hole). Could the wave solder ma
Electronics Forum | Thu Oct 15 08:06:17 EDT 1998 | Sjef van Gastel
|John, Why do not you consider the Philips Powerline concept ? The Powerline consists of the combination of FCM and ACM. These 2 machines represent the best in class in SMD placement. The FCM can accomodate 96 8 mm tapefeeders, while the ACM can ac
Electronics Forum | Tue Oct 13 18:28:51 EDT 1998 | Graham Naisbitt
Upinder, Using IPA does not cause the residue, it simply exposes it. Given that all fluxes leave reisdues, it follows that these MUST be benign - but how do you know, and how do you control it. You are using flux to remove oxides and give you a go
Electronics Forum | Thu Oct 15 13:55:43 EDT 1998 | Steve A
Dave, The first step would be to learn to accept the residue. IPC class 2 has no problem with it. If that is not possible, I am not sure why a no clean is necessary- but I will take your work for it. Alcohols will dry out the residue, and turn it
Electronics Forum | Thu Oct 15 16:39:07 EDT 1998 | Dave F
Steve: I thought Kyzen products were "additives" to either aqueous or semiaqueous inline or batch machine cleaning processes. I'm trying to clean the no-clean residue from a few components that can not bear to see water. Can you use Kyzen products
Electronics Forum | Thu Oct 15 16:41:28 EDT 1998 | Dave F
| | All Y'll | | | | How do you clean components that must be added to an assembled board after water wash? | | | | BACKGROUND | | | | Our basic process goes like this: | | | | 1 Print paste with OA flux, place, reflow, wash | | 2 Repeat 1 | |
Electronics Forum | Sat Oct 17 10:50:11 EDT 1998 | mike
| | | All Y'll | | | | | | How do you clean components that must be added to an assembled board after water wash? | | | | | | BACKGROUND | | | | | | Our basic process goes like this: | | | | | | 1 Print paste with OA flux, place, reflow, wash |
Electronics Forum | Mon Oct 05 13:58:20 EDT 1998 | Dave F
| Anyone know of someone who can convert mylar top layer board data to Gerber data? We have some old designs that all other data is now lost. | Jerry: You could tape the mylars to a digitizer pad and enter the layout into your PCB layout program o
