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How to test an anti-static mat that says \$10^7 \sim 10^9 \Omega\$ surface resistance

How do I test that it actually is working as intended (resistance not so high as to fail to protect the computer parts on it from ESD, and not so low as to fail to protect the human from electric ...
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How to test an anti-static mat that says \$10^7 \sim 10^9 \Omega\$ surface resistance

This can be tested with a cheap multimeter, rather accurately even. Multimeters have a rather well defined input impedance when measuring voltages, often either 1 MOhm or 10 MOhm. So you can set up a ...
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TVS with and without VDD connection

It depends on the topology of the sockets you want to protect. For example, for USB where you have D+/D- and VBUS to protect, it is a good idea to have a VDD input on the protection device to cover ...
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4 votes

How to test an anti-static mat that says \$10^7 \sim 10^9 \Omega\$ surface resistance

Building an answer from the comments: You want to test your ESD mat. To do this properly you need to buy an ESD mat tester. They are not cheap (GBP, EUR or USD are all 400plus) but are designed for ...
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2 votes

Use of internal PCB ground plane as ESD baseplate/EMC reference plane of product in plastic enclosure

If a device has no earthed metal chassis (or metal foil in a plastic enclosure), we have to consider two cases: The device is fully floating, e.g. a mobile handheld device with no cables. In this ...
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Could ground faults in the same building affect my anti-static grounding plug?

The main advantage of an anti-static workstation is that it keeps everything at the same voltage. There's usually a conductive rubber mat and a wrist (or heel) strap for the operator. The mat and the ...
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1 vote

What breakdown voltage of TVS diode should I choose for circuits interfacing with vehicle 12V battery?

These ESD diodes are meant for data lines, not supply lines. For automotive applications, supply lines and data lines are not subject to the same standards. ISO7637-2 for supply lines and ISO 7637-3 ...
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0 votes

Unidirectional vs Bidirectional TVS diode for ESD protection UART bus

I have used On Semi ESD8008 to protect the lines of ICSP programming port against +/- 8kV strike. It has 8 channels and very low capacitance of 0.35pF max. I use a 100ohm series resistor between the ...
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