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…
Read more You’re invited to the ESD Association Regional Tutorials
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…
Read more Is It OK to Connect Wrist Strap to Mat Using Alligator Clip?
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:…
Read more ESD Qualification Levels and Factory Control Methods
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…
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…
Read more ESD Sensitivity – Classifications – Withstand Voltage
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…
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…
Read more Early Split-lot Experiments Helped Prove the Need for ESD Control Programs
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…
The “standard” resistance value for a wrist strap is to be 1 megohm (+/-20%). Touch-Testers test for this, so should your single-wire constant monitor. One of the ways that manufacturers of low cost continuous monitors cut corners is to not monitor for a current-limiting resistor in the wrist strap system. While there is no industry…
Read more Does your Continuous Monitor Test for a Resistor in the Wrist Strap?
Damage visible using Scanning Electron Micrograph (SEM) after significant enhancement by delayering and etch enhancement. Used with permission of Hi-Rel Laboratories, Inc. Spokane WA 99217 – http://www.hrlabs.com Photo of ESD arcing from finger to component. This is not a computer simulation. Technician was connected to a small magneto. This is not HBM-ESD. Extensive damage on…