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PCBA workshop environmental management specifications
2021-10-04
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Author:Frank

PCBA workshop environmental management specifications
  SMT is surface mount technology (surface mount technology) (abbreviation of SurfaceMountTechnology), called surface mount or surface mount technology. It is the most popular technology and craft in the electronic assembly industry.
  It is a kind of surface assembly components with no leads or short leads (SMC/SMD for short, chip components in Chinese) mounted on the surface of a printed circuit board (PrintedCircuitBoard, PCB) or the surface of other substrates, through reflow soldering Or dip soldering and other methods to solder and assemble the circuit assembly technology.
SMT production equipment is a high-precision mechatronics equipment. The equipment and process materials have certain requirements for the cleanliness, humidity and temperature of the environment. In order to ensure the normal operation and assembly quality of the equipment, the working environment has the following requirements:
  1. The load-bearing capacity, vibration, and noise requirements of the plant should be greater than 8KN/m2.
Vibration should be controlled within 70dB, and the maximum value should not exceed 80dB. Noise should be controlled within 70dBA.

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  2. Power
Generally, single-phase AC220 (220±10%, 0/60Hz) and three-phase AC380 (380±10%, 50/60Hz) are required. The power of the power supply should be more than twice the power consumption.
  3. Air source
The pressure of the air source can be configured according to the requirements of the equipment. The air source of the factory can be used, or an oil-free compressed air machine can be configured separately. Generally, the pressure is greater than 7kg/cm2. Clean and dry purified air is required, so the compressed air needs to be degreasing, dusting, and water removal treatment. Use stainless steel or pressure-resistant plastic pipes for air ducts.
  4. Exhaust
Reflow soldering and wave soldering equipment need to be equipped with exhaust fans. For all hot blast stoves, the minimum flow rate of the exhaust duct is 500 cubic feet per minute (14.15m3/min)
  5. Lighting
The ideal illuminance in the workshop is 800~1200LUX, at least not less than 300LUX. When the illuminance is low, install local lighting in the inspection, repair, measurement and other work areas.
  6. Working environment
The workshop should be kept clean and sanitary, free of dust and corrosive gases. The production workshop should have cleanliness control, and the cleanliness should be controlled at: 500,000.
The best ambient temperature in the production workshop is 23±3℃, generally 17~28℃, and the relative humidity is 45%~70%RH. According to the size of the workshop, set a suitable thermometer and hygrometer for regular monitoring and temperature adjustment. Humidity facilities.
  1. Purpose
Implement proper management of the working environment and comprehensively strengthen the daily operation control of PCBA to ensure quality and ensure that the environment will not affect product compliance. Improve efficiency and brew a good working environment.
  2. Scope of application
It is suitable for the management of the working environment of the PCBA workshop product realization process.
  3.? Responsibilities
All workers in PCBA workshop
  4. Environmental Management Project
  ①Workshop environmental management
  ②Anti-static work area
  ③Warehouse management