The recent InCompliance article Achieving Perfect ESD Audits for S20.20 ESD Control Programs discusses the ESD Control Plan of General Dynamics Mission Systems facility in Bloomington, MN ESD Control Plan and their ongoing effort to manage the program. The article outlines the program as follows: ESD Training Program Recurrent ESD Auditing Program Changes Made to…
Two important elements to managing an ESD Control Plan are: controlling access to the ESD Protected Area and record keeping of personnel grounding devices – wrist strap, foot grounders, and smocks. ESD coordinators are faced with the challenge of limiting access to the ESD Protected Area to people that are properly trained to handle ESD…
Read more ESD Process Control and Data Acquisition Solutions
We are regularly asked if paper is OK in the ESD Protected Area or at an ESD workstation. Regular paper is insulative but tends to be low charging because it is hygroscopic (readily absorbs moisture). The primary concern with paper is placing ESD sensitive items on the paper interfering with the path-to-ground of the grounded ESD mat. Best practice…
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
ANSI/ESD S20.20 doesn’t mention hair, but the ESD Handbook ESD TR20.20 does. The general rule from ANSI/ESD S20.20 is in section 8.3. From ESD Handbook ESD TR20.20 mentions “human hair” is near the extreme end of the Triboelectric Series, so it can be high charging. But the above rule would apply; keep hair 12” away…
Read more Should dissipative hats be worn to protect ESD sensitive items from charges on hair?
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…
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…
ANSI/ESD S20.20 has three garment categories with the following names and required limits: Category 1 – Static Control Garment < 1 x 1011 ohms Category 2 – Groundable Static Control Garment < 1 x 109 ohms Category 3 – Groundable Static Control Garment System < 3.5 x 107 ohms The primary purpose of a smock…