Electronics Forum: nasa (Page 8 of 9)

up2000 HiE hates me

Electronics Forum | Tue Oct 31 13:15:13 EST 2006 | realchunks

SWAG is prolly right. You can verify the tactile sensor by watching the machine carefully. When finding the stencil height, make sure the board goes all the way up and touches the stencil to trigger the tactile. If it doesn't, then something is wr

Conformal Coat Thickness

Electronics Forum | Mon Jul 23 11:44:40 EDT 2007 | davef

NASA-STD-8739.1, 10.2.3 Thickness Measurements. Thickness measurements shall be made on coupons processed at the same time and under the same conditions as the PWA. The coupon substrate may be any compatible rigid material with a smooth flat surface.

ionic residues on the surface of printed circuit assemblies

Electronics Forum | Wed Sep 02 16:41:44 EDT 2009 | pcbcleaning

Advanced Cleaning Solutions is a Johnstown, PA based electronic manufacturing service provider (EMS) with more than 3,500 square feet of ESD safe facilities. Our services include precision PCB cleaning and ionic cleanliness testing/verification usin

Conformal Coating Coverage on Side of IC

Electronics Forum | Mon Sep 21 20:45:55 EDT 2009 | davef

10.4. Pre-Cure Examination. Immediately after material application, the uncured conformal coating shall be examined for: a. Bubbles and Air Entrapments. These defects shall be broken by vacuum, with a sharp probe, or other appropriate tools. b. Bridg

Lead free in hirel

Electronics Forum | Mon Jan 25 13:42:35 EST 2010 | patrickbruneel

This is a post from another forum as a response from Bob Landman to a claim that he had no evidence to be concerned about lead-free in hirel applications (interesting read). See below and am sure many technetters will find this interesting **********

What were your top go-to sources for electronics information and learning in 2018

Electronics Forum | Tue Nov 06 10:28:58 EST 2018 | davef

Media Links IPC Global Insight This weekly electronic newsletter includes IPC news and multimedia information on manufacturing and management best practices and solutions, new technologies, standards, government relations and environment, health and

Re: Parylene Coating of Plastic Parts

Electronics Forum | Fri Aug 06 07:18:48 EDT 1999 | Graham Naisbitt

| | | | | Has anyone out there tried to parylene coat plastic parts prior to soldering them to a pcb? I'm looking at several potential applications where fewer than 5% of my components on a pcb are plastic, yet from a reliability aspect (environmenta

Water Soluble for No Clean BGA Balls

Electronics Forum | Tue Apr 13 17:48:54 EDT 2004 | davef

Q1: Can anyone explain to me about the effect of their mixture. A1: What is their �mixture�? Q2: What enhancement does my BGA will have when using a WS paste flux with regards to corrosion, 25 years life cycle of the solder joint. A2: Tough to say

Photopolymerized Conducting Polymers

Electronics Forum | Wed Mar 10 17:03:52 EST 1999 | Morziana Hasan

NASA CommQuest Photopolymerized Conducting Polymers Directions: 1.Please read the information provided on this technology. You may follow the links to additional information resources below. 2.After evaluating the technology, please answer the

Re: solder mask

Electronics Forum | Sun Aug 15 05:45:15 EDT 1999 | Brian

Boca, Dave Sorry, but I cannot let this go. I'll go along with you that, at the time that the Montreal Protocol was initially signed (September 1987), there was no scientific proof that CFCs etc. were causing ozone depletion. There was, however, ve


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