We know that no matter what product is produced, there will be a process before it leaves the factory, that is, inspection. Needless to say, the purpose of testing, I believe everyone will also understand, the following Sanjing will show you why PCBA testing is required.

(1) In order to improve the product qualification rate

With the improvement of product qualification rate, the straight-through rate of products will also be greatly improved. PCBA testing is an indispensable link in the entire production process of PCBA processing and an important means of controlling product quality.

(2) In order to obtain a better user experience

Generally speaking, if conditions permit, every product needs basic tests, such as ICT test, FCT test, aging test, fatigue test, stress test under harsh environment, aging test, etc. Because PCBA is generally mass-produced, Only sampling tests can be taken. In addition, if product quality problems are found during the testing process, they can be repaired and dealt with in time to make the product more complete and avoid serious consequences when the product is put on the market.

PCBA circuit board inspection conditions

In order to prevent the parts from being contaminated, you must choose EOS/ESD full protective gloves or finger cots, and wear an electrostatic ring, the light source is white or fluorescent, and the light intensity must be above 100 lux and clearly visible within ten seconds.

① Inspection method: place the product about 40cm away from the eyes, about 45 degrees up and down, and inspect it visually or with a three-fold magnifying glass. ② Inspection standard: sampling according to QS9000, if the customer has special requirements, it will be determined according to the customer's acceptable standard.

PCBA board inspection standard

①Critical defect (CR): Any defect that causes harm to human body or machine or endangers life and safety, such as: failure to comply with safety regulations, machine burnout or electric shock. ②Major shortcomings (MA): The shortcomings that may cause damage to the product, abnormal function, or affect the service life of the product due to material reasons. ③Minor shortcomings (MI): Does not affect the function and service life of the product, the appearance is defective, and the mechanism assembly has slight defects or differences.

The above is about why PCBA needs to be tested and the content of the inspection method standard, I hope it can be helpful to everyone!