DocumentCode
2368171
Title
A study of “soft grounding” of tools for ESD/EOS/EMI control
Author
Wallash, Al
Author_Institution
Hitachi Global Storage Technol., San Jose
fYear
2007
fDate
16-21 Sept. 2007
Abstract
The effect of a discrete resistor placed in the ground wire connected to a metal tool block or hand tool on ESD/EOS/EMI control is studied. Experimental results and SPICE circuit simulations show that in most cases "soft grounding" results in no reduction in CDM current, noise voltage or radiated fields (EMI) because of capacitive coupling. However, using a high-resistance, static dissipative material at the interface between the device input and metal tool was extremely effective in reducing the voltage and current associated with ESD/EOS/EMI and increased the CDM failure level of a Class 0 ESD sensitive device from 5 V to over 200 V.
Keywords
SPICE; circuit simulation; earthing; electromagnetic interference; electrostatic discharge; interference suppression; CDM current; ESD/EOS/EMI Control; SPICE circuit simulations; discrete resistor; noise voltage; radiated fields; soft grounding; Circuit simulation; Earth Observing System; Electromagnetic interference; Electrostatic discharge; Grounding; Noise reduction; Resistors; SPICE; Voltage; Wire;
fLanguage
English
Publisher
ieee
Conference_Titel
29th Electrical Overstress/Electrostatic Discharge Symposium, 2007. EOS/ESD
Conference_Location
Anaheim, CA
Print_ISBN
978-1-58537-136-5
Type
conf
DOI
10.1109/EOSESD.2007.4401746
Filename
4401746
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