Since PCBA processing often involves a variety of static-sensitive electronic components, and some processing processes that have certain requirements for electrostatic protection, it is necessary to perform certain anti-static requirements in PCBA processing. The ESD warning label is primarily used for posting, hanging, and placing on plant, equipment, components, and packaging to alert people to the possibility of electrostatic discharge or electrical overload damage during operation.
PCBA Assembly ESD Protection requirement
Workshop anti-static requirements
According to the production level requirements of the product, the production workshop should be equipped with corresponding anti-static facilities, the ground wire is independent and grounded reliably. Maintain constant temperature and constant humidity in the workshop. Divide the static safety work area and attach a clear anti-static warning sign.
The grounding system outside the workshop is inspected once a year. The grounding system of the floor/pad, workbench, etc. of the workshop is tested every six months and records are made accordingly.
The temperature and humidity in the workshop are controlled at (25 ± 2) °C, 65% ± 5% RH; measured twice a day, and recorded accordingly.
Employees' electrostatic protection requirements
Wear anti-static overalls and anti-static shoes as required in the anti-static area;
Before touching the static sensitive components, you must wear the grounding wrist strap or the grounding strap as required, and pass the corresponding static test;
Items that are prone to static electricity are prohibited from being brought into the anti-static area;
The handling, storage and distribution of electrostatic sensitive components must be stored in anti-static packaging;
The antistatic package can only be opened after the corresponding antistatic measures have been taken;
The trolleys and shelves used in the anti-static area must have proper grounding devices;
Anti-static overalls and work shoes are prohibited from being worn out of the work area and cleaned at regular intervals;
The cleaning of the anti-static work surface shall use a cleaning agent approved by the static protection personnel;
Avoid placing static sensitive components and boards together with plastic products or tools such as computers and computer terminals;
Connect all tools and machines to the ground;
Use electrostatic protection mats;
Employees who are not attached to the bracelet are close to the ESD workstation;
Report immediately about all possible causes of electrostatic damage.
Precautions during operation
Touch the work surface with both hands before taking the component, so that the static electricity on the hand is transmitted to the earth through the anti-static table;
Place the device pins down on the counter that dissipates the static electricity;
When taking an integrated circuit, you should grasp the body of the manifold, not the pins;
When operating electronic components, take them on the edge of the PCB, do not directly touch the components or board lines;
Do not drag or slide electronic components on any surface;
The non-conductor shall be kept at a distance of more than 1 m from the electrostatic safety working area;
Only remove the components and circuit boards from the anti-static packaging box in the static safety working area;
Place static-sensitive components that are not used temporarily in an antistatic container or in a package;
Reduce the number of handling to a minimum.