Articles

Fundamentals of Electrostatic Discharge – Part One: An Introduction to ESD

Desco March 3, 2014 0

Published in InCompliance Magazine Written by The ESD Association January 01, 2014 The ESD Association has published the first of a six part article titled Fundamentals of Electrostatic Discharge in the January edition of InCompliance. The article starts with the following introduction: To many people, Electrostatic Discharge (ESD) is only experienced as a shock when…

Ionization and Ions

Desco February 7, 2014 0

Ionization is probably the most misunderstood and under used technology for controlling ESD. There are some cases where ionization would be primary method of controlling ESD in an ESD Protected Area and there are others where it would not even be necessary. The need for ionization largely depends on what and how ESD susceptible devices…

You’re invited to the ESD Association Regional Tutorials

Desco January 31, 2014 0

February 26-27, 2014 EOS/ESD Association Inc. 7900 Turin Rd. Bld 3 Rome NY 13440 ESD Basics for the Program Manager How To’s of In-Plant ESD Survey and Evaluation Measurements Make sure you have people with the right knowledge to maintain your ESD control program at the highest level. Learn from top industry professionals. ESDA Certification…

Is It OK to Connect Wrist Strap to Mat Using Alligator Clip?

Desco January 27, 2014 0

If testing can demonstrate that operator’s resistance path is reliable, it might be OK, but it is certainly not best practice. Alligator clip attached to dissipative mat is not recommended per ESD Handbook ESD TR20.20 wrist strap section 5.3.2.2.2 Wrist Strap Ground Cord: “The groundable end of the cord is most often equipped with a…

ESD Qualification Levels and Factory Control Methods

Desco January 6, 2014 0

As the architecture of electronics changes so too will the requirements for ESD control. With the ever increasing demand for faster, lighter, and smaller (and more expensive in some cases) electronics the requirements for protecting these new devices from ESD events becomes even more critical. In Charvaka Duvvury & Harald Gossner’s article “ESD target levels:…

ESDA November 2013 Threshold E-News + Drag Chains

Desco November 12, 2013 0

Drag chains and grounding mobile equipment, such as carts, can be a challenge in any ESD Control Plan. The required limit for cart work surfaces per ANSI/ESD S20.20 is less than 1 x 109 ohms resistance to ground. In the most recent edition the ESDA November 2013 Threshold E-News Question and Answer section there is…

ESD Sensitivity – Classifications – Withstand Voltage

Desco October 15, 2013 0

See published article Now Is The Time for ESD Control Programs to be Improved It includes: HUMAN BODY MODEL Part of the challenge may be for the first time needing to handle electronics having a HBM Class 0A withstand voltage. Per the ANSI/ESD S20.20 Foreword: “This standard covers electrical or electronic parts, assemblies and equipment…

Moisture Barrier Bags – Market Comparison

Desco October 10, 2013 0

Desco offers a number of standard sized Statshield® Moisture Barrier Bags. We always recommend evaluating our product to ensure it meets your requirements. We will gladly provide samples for your evaluation; just fill out a request here. 3M Series Statshield® Moisture Barrier Bags Series Drawing/Specs 3M 2000 3.5 mil #13806 3M 2700 6.5 mil #13760…

Early Split-lot Experiments Helped Prove the Need for ESD Control Programs

Desco October 8, 2013 0

An excerpt from Terry Welsher’s InCompliance article titled – The “Real” Cost of ESD Damage about using “split lot” experiments to determine the effectiveness of ESD control when manufacturing electronics. “At the time of the first EOS/ESD symposium in 1979 there were few mature ESD programs, but many companies were trying to establish them. Some of…

Conductive vs. Dissipative Floors

Desco September 26, 2013 0

If using ESD flooring for a flooring / footwear personnel grounding system (or a possibility in the future), we recommend conductive flooring. A “Conductive ESD Floor” is defined by ANSI/ESD S7.1 (the flooring standard) as a floor that measures <1.0 x 106 ohm Rtg. The ANSI/ESD S20.20 standard states that an ESD floor must measure…