What is surface resistance
Surface resistance is also called surface specific resistance. An important data characterizing the electrical properties of dielectric or insulating materials.
It represents the resistance per square area of the dielectric surface to the surface leakage current between the opposite sides of the square. The unit is ohms. The size of the surface resistance is not only determined by the structure and composition of the dielectric, but also related to the voltage, temperature, surface condition of the material, processing conditions and ambient humidity. Ambient humidity has a great influence on the surface resistance of dielectrics. The greater the surface resistance, the better the insulation performance.
11 ohms with a resistance greater than or equal to 10 are insulators.
Greater than or equal to 10, 4 and less than 10, 11 ohms are antistatic (static dissipative).
3 less than 10 is an electric field shielding material. —— ANSI/ESD 541-2008 standard
There are surface resistance testers on the market to test the anti-static ability of anti-static products by measuring the resistance of the surface of anti-static products.