1. Home
  2. Electronics Equipment
  3. Question on ESD mats....

Question on ESD mats....

Recently my co. got on the ESD bandwagon, they had some technicians come in and install a ground point on our test bench, and they gave us two sets of ESD mats and grounding straps. I think they are 3M brand. The mats have a round metal snap to attach to the workbench ground. I checked the resistance of one of these new mats with a Fluke DM 77. It was a long time ago, and I don't remember what the reading was exactly from the attaching snap contact to the surface of the mat, but I remember it was many megohms, if not infinite. I thought at first that this cannot function to protect against static charges. But possibly it is supposed to be up in the megohm range? I understand that to be a dead short to ground would be just as bad. There is supposed to be SOME resistance....but how much?

Reply to
geronimo
Loading thread data ...

geronimo wrote in news: snipped-for-privacy@4ax.com:

wrist straps? One bench mat,one floor mat?

IIRC,greater than 500K R,less than 5 megR. the 3M mats are measured using specified weights with specified contact area,spaced a specified distance apart.

At TEK,we also had floor mats and had to wear heel straps on our shoes,and every morning had to TEST the wrist and heel straps on a 3M tester.The wrist straps DO wear out,and you need to test them to insure they are good.

And we also wore anti-static lab coats.

--
Jim Yanik
jyanik
at
kua.net
Reply to
Jim Yanik

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.