The picture I have of ESD damage, at least for MOS-style semiconductors, is that some charge gets transferred to a MOSFET gate. CMOS, with twice as many gates as NMOS, is half as susceptible. The geometries are so small, with associated tiny capacitance, that even minute amounts of charge on the gate can produce a voltage exceeding the breakdown strength of the ultrathin oxide.
Thanks to all who have commented on my original question.
Lou Hart
----------
From: West, Jim[SMTP:[log in to unmask]]
Sent: Wednesday, April 05, 2000 5:00 PM
To: [log in to unmask]
Subject: Re: [TN] Wearing of static-dissipative coats
Brian,
What study do you need? Are you telling everyone that you have never
experienced being shocked by ESD? If you have not, then you are a among the
minority. If you have, then there's your study. Trust me ESD does exist,
and if you don't have preventive practices in place, then it will cost you
money if you are building with ESD sensitive components.
Jim West
Manufacturing Engineer
Promark Electronics
-----Original Message-----
From: Moe, Brian [mailto:[log in to unmask]]
Sent: Wednesday, April 05, 2000 4:38 PM
To: [log in to unmask]
Subject: Re: [TN] Wearing of static-dissipative coats
Does anyone know of any studies on this subject? My company is experiencing
the same thing and Engineers always think they know better. I need to get
some factual data and proof showing that ESD exists and costs us money.
Thank you
Brian
NatSteel Electronics
-----Original Message-----
From: Dieselberg, Ron [mailto:[log in to unmask]]
Sent: Wednesday, April 05, 2000 1:26 PM
To: [log in to unmask]
Subject: Re: [TN] Wearing of static-dissipative coats
Make them snap them closed!!! Issue disciplinary action if they continue to
disregard your ESD plan!!! Can your company afford to take the losses from
ESD damaged product?
Ron Dieselberg
BAE SYSTEMS Cincinnati Electronics Corp.
-----Original Message-----
From: Lou Hart [mailto:[log in to unmask]]
Sent: Wednesday, April 05, 2000 08:44
To: [log in to unmask]
Subject: [TN] Wearing of static-dissipative coats
TechNetters, in our PC assembly plant, we have people wearing static
dissipative coats, long ones down to the knees. Some do not snap them
closed in front, and just let the coats hang or float. I've told the people
in my department to snap the coats closed, at least 2 of the 5 or 6 snaps.
Am I doing the right thing? What's been your experience? Thanks...Lou Hart
Also, the floors are coated with static dissipative wax or, in some places,
are static dissipative tile. And the people are good about wearing wrist
and heel straps.
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