Anti-static technical indicators in the manufacture of electronic products:
(1) Anti-static grounding resistance is <10Ω.
(2) Ground or floor mat: surface resistance value 105-1010Ω; friction voltage <100V.
(3) Wall: The resistance value is 5×104-109Ω.
(4) Work surface or pad: surface resistance value 106-109 Ω; friction voltage <100V; ground system resistance 106-108 Ω.
(5) The work chair faces the caster resistance of 106-108 Ω.
(6) Workwear, cap, gloves friction voltage <300V; sole friction voltage <100V.
(7) The wristband connection cable resistance is 1MΩ; when the wristband is worn, the system resistance is 1-1OMΩ. The heel strap (shoe bundle) system resistance is 0.5×105-108Ω.
(8) The logistics platform faces the wheel system resistance of 106-109 Ω.
(9) The material transfer device such as the material box, the turnover box and the PCB frame has a surface resistance value of 103-108 Ω; the friction voltage is <100V.
(10) Packaging generation, box one friction voltage <100V.
(11) Human body comprehensive resistance 106-108Ω.
Anti-static measures and requirements for electrostatic working area:
The production equipment must be well grounded, and the placement machine should be grounded by a three-phase wireless grounding method. The ground, work surface mats, and chairs of the production site shall comply with the anti-static requirements. Maintain a constant temperature and constant humidity environment in the workshop. It should be equipped with anti-static box, turnover box, PCB frame, logistics trolley, anti-static packaging tape, anti-static wrist strap, anti-static soldering iron and tools.
Management and maintenance of anti-static work area:
(1) Formulate a sound anti-static management system and be responsible for it.
(2) Spare anti-static overalls, shoes, wrist straps and other personal protective equipment for use by outsiders.
(3) Regularly maintain and check the effectiveness of anti-static facilities.
(4) The anti-static wrist strap is checked once a day (it is recommended to use the real-time monitoring wrist strap online monitor).
(5) The grounding of the anti-static table mat, the floor mat, and the performance of the static eliminator are checked once a month.
(6) Anti-static component frame, printed board frame and turnover box; the anti-static performance of transport vehicles, table mats and floor mats is checked every six months.
