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…
Surface Resistance Test Kit OTHER CONSIDERATIONS Discipline A significant increase in the discipline of implementing the fundamentals of ESD control noted in ANSI/ESD S20.20 Foreword, calls for: Ground all conductors in the EPA including people Remove all insulators from the EPA or use ionizers for process necessary insulators Package ESD sensitive items going outside the…
Antistatic is the ESD control property properly referred to as “low charging”. This is an important property for all bags used inside or outside of an ESD protected area (EPA). Specifically, it is important that the inside of the bag be low charging, so when the ESD Sensitive Device is inserted into the bag or…
Read more What is the exact difference between antistatic bags and dissipative bags?
By Fred Tenzer There are essentially two types of technologies used for monitoring operator wrist straps: Single-Wire Impedance or Dual-Wire Resistance Monitors. Both technologies monitor the function of an operator’s wrist strap, but it is important to understand how these technologies work and the shortcomings of each. Here is some basic historical information on the…
Read more Fred Tenzer on Continuous Monitor History and Preference
Trustat™ NEW B80 mats are .080″ thick, extruded homogenous vinyl material. It is designed to provide a path to ground and eliminate static charge generation when used as a worksurface table mat, shelf liner, or tray liner. The surface resistance (1 x 10E6 < 1 x 10E9 ohms Rtt) meets the ANSI/ESD S20.20 worksurface required…
Low-VOC Meets CARB and other regional VOC requirements 23% Solids – 2 Coat System Reduces labor needed for initial install and on-going maintenance of the floor Better Hardness vs. Leading Competition ASTM Standard D2134.93 Resists wear in order to maintain ESD performance longer UL Listed for Slip Resistance Tested by Underwriters Laboratory to their slip…
ANSI/ESD S20.20 Has Three Categories of ESD Garments – Why? ANSI/ESD S20.20-2007 has three Garment categories with the following names and required limits: Static Control Garment < 1 x 10^11 ohms Groundable Static Control Garment < 1 x 10^9 ohms Groundable Static Control Garment System < 3.5 x 10^7 ohms Per section 8.2 Personnel Grounding…
Read more ANSI/ESD S20.20 Has Three Categories of ESD Garments – Why?
Question: I am confused on ESD connections. I understand that you cannot clip a cord from a wrist strap to the edge of an ESD protective mat. I know that the common cord for wrist straps has 1 megohm of resistance and that the point to connect the wrist strap cord should have less than…
“Any auxiliary grounds (water pipe, building frame, ground stake) present and used at the workstation must be bonded to the equipment ground.” A low resistance connector (such as metal wire) should be soldered or mechanically attached electrically connecting the building electrical system AC ground (Equipment Ground) to the Auxiliary Ground. ESD Handbook TR20.20 section 5.1.3…
Read more What is the proper procedure for connecting the ESD ground to the building ground?