Printed circuit board

What are the basic general knowledge and methods of PCB board inspection?

In our daily life, we usually go to the mall or large supermarkets to go shopping, we will see that most products will have a shelf life, the shelf life of these products are provided by the manufacturer, marked on the time-limited use of the product. Within the shelf life, the producer of the product is directly responsible for the quality of the product in accordance with the relevant standards or expressly guaranteed quality conditions, the seller can be assured that the sale of these products, consumers can also be safely used. Well, now as a focus on the PCB industry for many years, I would like to talk to you about the preservation of PCB points.
Circuit board is not compared to other products we buy, it has strict requirements for contact with air and water, first of all, PCB board vacuum can not be damaged, the packaging should be covered with a layer of bubble film around the box, because the bubble film is better water absorption, so that the moisture played a good role, can also be placed some moisture beads also to a certain extent to achieve the purpose of moisture. After sealing the box, the products should be stored off the ground in a dry and ventilated place and avoid direct sunlight. Second, the factory’s warehouse temperature and humidity should also be controlled within the specified standard range.

PCB circuit board preservation time, not only with the PCB manufacturer’s production capacity and production process, in fact, also has a great relationship with the geographical location. For PCB board preservation time, baking time temperature, to specific issues specific analysis, need to be based on PCB control specifications, according to the different PCB circuit board manufacturers’ production capabilities, processes, geography and season, to specifically decide. For a long time not to use the PCB board, circuit board manufacturers are best to brush a layer of three-proof paint on it, the role of three-proof paint can be moisture-proof, dust-proof, anti-oxidation. This PCB board storage life will increase to as long as nine months. For example, the OSP anti-oxidation process and pure sink gold process to produce PCBs, generally in the package after the shelf life is 6 months, for the OSP process is generally not recommended to bake.
In fact, PCB circuit board storage time, is related to the surface treatment, sink gold and electroplated gold is the longest preservation time, in constant temperature and humidity conditions, can be stored for two or three years. Do a good job of PCB circuit board storage in order to better extend the service life of the circuit board is a problem that can not be ignored. GT PCB always adhere to the superb technical force, sophisticated production equipment, perfect testing methods, product quality above industry standards, warm and thoughtful service, won the praise and welcome of global businesses and users.


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