Electronics Forum | Tue Sep 21 08:43:28 EDT 1999 | Christopher Cross
We are finding solder shorts under 1206 Components on the bottom side of our boards.In all cases these shorts are from either side of the component to a feed-thru under the component body. Adhesive is used to glue down the component and then the boar
Electronics Forum | Mon Sep 13 04:11:27 EDT 1999 | Earl Moon
| | hello | | | | having a problem with one customers bare boards not matching my stencil apertures. i design stencils based on gerber data and reduce up to 15% on some pads. do some board houses reduce pads after receiving gerber data???why would
Electronics Forum | Wed Sep 08 20:38:06 EDT 1999 | Barbara
I have a board that has surface mount on both sides . On this board is a 22pin connector which is the only thru-hole part.This part is located on the component side. I would like to reflow this part. Can this be done? If so, how can this be done?
Electronics Forum | Wed Sep 01 12:26:32 EDT 1999 | Jae Hinson
To aid in heat dissipation of our PCB, we would like to try having copper fill areas on the board that are hot air levelled and not covered with solder resist. Then, when the board is reflowed, solder paste would be applied and then solder. Has anyon
Electronics Forum | Wed Aug 18 11:18:22 EDT 1999 | GREG DENHAM
WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE PADS. IS TH
Electronics Forum | Wed Aug 18 11:25:12 EDT 1999 | J.J. Thomas
| WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE PADS.
Electronics Forum | Fri Jul 23 13:14:17 EDT 1999 | Steve Schrader
| Has anyone ever heard of testing solder paste quality by pasting a board and making a determination of the quality by measuring paste height and width after the board is pasted. Would you consider this a valid test for solder paste testing? | Mar
Electronics Forum | Wed Jul 21 12:41:39 EDT 1999 | jason
I have pcb's in which i am experiencing warping. the boards are 12.8125" on a diagonal measurement. they are out approximatley .010". the boards are combination thru-hole,smt, they also have 3ounce copper.what is acceptable,and what is the propper fo
Electronics Forum | Fri Jul 16 11:29:59 EDT 1999 | John Sims
We are considering adding surface mount components to a board we currently produce. The board is made from CEM-1. Has anyone had any problems with surface mounting to this material? We use a glue/place/cure process. Thanks in advance, John Sims
Electronics Forum | Fri Jun 18 16:36:29 EDT 1999 | John Thorup
| Has there anyone bold enough to try this in their shops? My cubemate just got through telling me that at his last shop, they had bare copper boards (no HASL, no OSP, no nothing), with minimal solderability problems. I'd hate to have to clean what
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