Electronics Forum | Wed Mar 15 22:08:20 EST 2006 | davef
Brad We agree with Rob. Even if the fab marks the fids [on both sides] to reduce component attrition, you'd be surprised in the amount of paste that 'disappears' on x-out boards. Do the numbers [follow the money].
Electronics Forum | Thu Apr 03 15:17:35 EDT 2008 | lakeside
Hi John, Check out Sierra Proto Express: http://www.protoexpress.com They have a microelectronics division that can do the 4 mil laser drill & they can get down to 1.25 mil space/trace. Hope they can help! Julie
Electronics Forum | Wed May 14 11:35:04 EDT 2008 | scottefiske
We produce High mix very low volume Military assemblies. So a typical order mya be for 50 pcb's, at a 5 up array. Do you work in the fab shop? Scott
Electronics Forum | Tue Apr 05 11:59:41 EDT 2011 | grahamcooper22
maybe the pcbs need a proper dry (the quick dry in the reflow oven won't get all the moisture out )...maybe 125 C for 4 hours or speak to the manufacturer to get their recommendations.
Electronics Forum | Mon Jan 03 12:26:16 EST 2005 | barryg
We are looking at potentially doing a pcb that is enig finished as called out on its fab. drawing. We plan on a standard 63/37 water soluble paste. Is there any pro's and cons to this process with a pcb plated as such. What is the main advantage that
Electronics Forum | Wed Dec 17 14:38:25 EST 2003 | davef
Francois Monette [Cogiscan Inc. 450-534-2644 fmonette@cogiscan.com ] is the resident genius on component and board baking. If he doesn't chime-in a in a day or so, give him a shout. He seems to nap quite a bit. Alternately, if you search on his na
Electronics Forum | Thu Oct 17 05:16:44 EDT 2013 | vincentdesilva2003
Anyone can help me how many percentage of blowholes and pinholes if i do the followings: 1. Increase copper plating thickness more than 25 microns. 2. Pre Baking of PCB to remove gassing by drying out the PCB's
Electronics Forum | Wed May 03 16:37:10 EDT 2017 | charliedci
I don't believe there should be any issues with the HASL finish. The issue is how long on the shelf and is a bake out required to remove moisture from PCB, as in any FR4 PCB's that may have had time to absorb moisture.
Electronics Forum | Mon Jul 10 08:17:06 EDT 2017 | philc
Just a random thought, but we had an issue with having to replace faulty LED's on a PCB, and the solution turned out to be pre-baking the LED's prior to build. Just put them in an oven at 40C for 24 hours, then build. Result was zero defective LED's.
Electronics Forum | Fri Jul 30 14:53:01 EDT 1999 | Tom B.
Hello Netters, I have a customer who wants us to aquaeos wash a PCB after all operations have been performed. The PWB is two layer FR4 with a Transformer, a Multichip Module with Conformal Coating, (6) 11" insulated wires that are tinned on exposed
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