Electronics Forum: esd measurement (Page 1 of 5)

Granite Surface and ESD

Electronics Forum | Fri Apr 01 09:40:57 EST 2005 | russ

Doug you are correct, I was talking about the integrety of the surface for mechanical measurement accuracy, not ESD properties.

Granite Surface and ESD

Electronics Forum | Mon Mar 28 19:58:26 EST 2005 | davef

We agree with Ken. What does your field meter tell you? Taking it a step further [erzit backward?], what is it about the measurement that requires the granite surface? Wouldn't an ESD protected bench top be as flat as needed for most gauging like

bead blasting conformal coatings

Electronics Forum | Tue Feb 18 11:06:49 EST 2014 | cunningham

Does anyone do this? We have a small booth and lots of different kinds of media to try. it will be local stripping of coating on components for rework purposes. My main concern is ESD levels and how best to measure this. Any ideas or any papers o

Boards Storage

Electronics Forum | Thu Mar 08 22:35:13 EST 2007 | davef

Suggestions are: * Procure solderable finishes that have sufficient thickness to avoid intermetallic problems and use storage conditions that do not promote oxide growth problems. * Bagging/sealing boards has been shown to extend storage durations i

Ionizing pressurized air for pcb blow-off

Electronics Forum | Sun Feb 23 14:51:02 EST 2003 | davef

Without being clear on whether you're talking about: * Standard air knives at the back-end of your in-line cleaner ... OR * Hand held or similar nozzle. Standard air knives: This causes no problem with ESD because the relative humidity is so high t

ESD concerns

Electronics Forum | Wed Oct 18 19:52:09 EDT 2006 | davef

Ted Dangelmayer's book [ESD Program Management: A Realistic Approach to Continuous Measurable Improvement in Static Control; Dangelmayer, T; Kluwer Academic Pub 1999 e2; 0412136716] is excellent. Often, ESD supplies sales-types use the "Chicken Littl

Damaged Components by Reflow Process (Process Window)

Electronics Forum | Tue Feb 10 02:14:39 EST 2009 | emmanueldavid

Smartasp, Seems this issue is certainly making a long thread ! As far as our Experience is concerned on Reflow Soldering, particular parts must have failed in LSLs [Lower Specification Limit] and have not withstand well under USLs [Upper Specificat

J-STD-001 Par 4.2.2 Temperature and Humidity

Electronics Forum | Mon Jul 16 15:44:27 EDT 2007 | davef

J-STD-001 doesn't necessarily require additional controls under conditions of low humidity, only that you verify the effectiveness of what you have in place. ESD S20.20 [1999] only says that relative humidity above 30% is "desirable". ESD S20.20 [200

SMD Adhesives Gluing Process

Electronics Forum | Mon Sep 21 21:24:34 EDT 2009 | davef

First, we're not real concerned about gluing induced ESD damage, but conformal coating has a tremendous potential to damage sensitive components. We found a charge of 12 kV generated during the aerosol spraying. Second, ESD-stuff IS very confusing.

Question on ESD Smocks

Electronics Forum | Tue May 16 16:54:14 EDT 2000 | Ashok Dhawan

For a typical assembly facility ( where assembly of circuit cards and shelves is carried out), what are usual recommendation for : 1.Ambient conditions ( Temp and Relative Humidity) 2.Use of Smocks If humidity is less than 40%, what are special prov

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