Inspection and maintenance of anti-static products

How to detect anti-static products? What kinds of electrostatic test instruments are there?

Electrostatic measuring instrument

(1) Static electricity tester: a measure how much static electricity there is in a product or a certain location. b measure the performance of static eliminator in removing static electricity

(2) Wrist strap tester: measure whether the wrist strap is effective.

(3) Wrist strap online monitor: monitor whether the wrist strap is damaged and worn at any time.

(4) Human body comprehensive tester: It can be used to measure whether the wrist strap and anti-static shoes are effective, and can also measure the comprehensive resistance of the human body.

(5) Surface resistance tester: used to measure the surface impedance or resistance of all conductive, antistatic and electrostatic discharge products.

(6) System monitoring and alarm device: It can monitor whether the ground line of the work flow is in good contact with the earth at any time.

Anti-static technical index requirements in electronic product manufacturing

(1) Anti-static grounding resistance <10Ω.

(2) Anti-static ground or floor mat: the surface resistance value is 105-109Ω, and the friction voltage is less than 100V.

(3) Anti-static wall: the resistance value is 5×104-109Ω.

(4) Anti-static workbench pad: surface resistance value is 105-109Ω; friction voltage is less than 100V; system resistance to ground is 105-109Ω.

(5) The resistance of the anti-static work chair facing the casters is 105-109Ω.

(6) The frictional voltage of anti-static work clothes, caps and gloves is less than 300V; the frictional voltage of soles is less than 100V. The surface resistance value is 105-109Ω.

(7) The cable resistance of the anti-static wrist strap is 1MΩ; the system resistance is 750KΩ-1O.5MΩ when the wrist strap is worn. Heel strap (shoe harness) system resistance 105-108Ω.

(8) The resistance of the logistics vehicle platform facing the wheel system is 105-109Ω.

(9) The surface resistance value of material boxes, turnover boxes, PCB racks and other logistics transmission equipment is 103-109Ω, and the friction voltage is less than 100V.

(10) Packing generation, box friction voltage <100V.

(11) The comprehensive resistance of the human body is 105-109Ω.

Formulate an anti-static management system, and have a special person responsible. Regularly check and maintain the effectiveness of anti-static facilities.

(1) Wrist strap: Check it once a day.

(2) Anti-static clothing: check once a month.

(3) Anti-static shoes: check once a week.

(4) Comprehensive human body resistance: test once a day, usually at the entrance of the workshop.

(5) The anti-static performance of anti-static component racks, printed board racks, turnover boxes, and transport vehicles should be checked every six months.

(6) Anti-static floors, table mats and floor mats are tested every three months.

(7) The static elimination equipment should be tested every three months, and a static tester can be used.

(8) The grounding of anti-static products should be checked once a month.