Electronics Forum | Thu Sep 16 05:37:18 EDT 1999 | Earl Moon
| Can you imagine that there is a smt process using the a few chip and ic are nearly about 4,5,6,8 years old. | Antigues?? | what should you do If you are an engineer of smt process in that company. | | | | thank in advance. | | I'm s
Electronics Forum | Mon Aug 10 13:36:33 EDT 1998 | Mike Moninger
| | I am trying to get an idea of what system seems to work best for solder paste inspection. I am looking for basic table top models with he capabilites of height and width measurements. Can anyone give me suggestions, pricing and why you prefer
Electronics Forum | Tue Nov 27 10:16:07 EST 2001 | davef
Oooo, I get it. We do that trick on the wave solder side of boards. On the bare board, during design / layout, the basic shape of the jumper is a 125 thou disc of copper [that of course is eventually covered with whatever solderability preservative
Electronics Forum | Mon Jan 26 03:45:37 EST 2004 | Vinny
Hi All, We are producing a veriety of RF related PCBAs in which we see Unsolder/Mislaigned on a regular basis. In these baords usually one of the pad is connected to a signal trace and the other pad is connected to very huge ground plane. This gro
Electronics Forum | Thu Sep 23 11:56:30 EDT 2004 | rkevin
We are printing on an assembly using SAC305 Alloy Sn96.5 Ag 3 Cu .5 with a no clean flux and getting virtually NO spread with either a ramp to spike or straight ramp profile. We are printing to standard FR4 board with immersion Ag finish. I am trying
Electronics Forum | Mon Mar 15 09:38:30 EST 1999 | Chrys
| 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 a
Electronics Forum | Fri May 14 12:13:35 EDT 1999 | Heather
| Hi Guys, | | I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? | | So, any of you folks who have already experi
Electronics Forum | Sat May 22 19:38:59 EDT 1999 | Omat Marasigan
| Earl, | | your colourful impressive descrptions are a joy to read..well lighten's up my day but maybe it's just me...ummmm..? | | anyhoo, Omat, as Earl has said ..this is a moisture sensative problem basically the reason you blow the shit out of
Electronics Forum | Fri May 14 18:29:26 EDT 1999 | Earl Moon
| Hi Guys, | | I am going to be graced with the good luck of processing microBGA's in the near future. A bit of a step forward from printing 20-mil pitch and wave soldering 0805's, wouldn't you say? | | So, any of you folks who have already experi
Electronics Forum | Thu Jul 29 11:34:27 EDT 1999 | Justin Medernach
| | | | | | Presently protos of micro-bgas (80i/o) pitch .030/.031 | | | | | | 12BGA per assembly | | | | | | | | | | | | The board is a (.062, 4 layers) FR-4 using Dry film | | | | | | Pads .014inch | | | | | | Vias within footprint .020inch | | |
