Date：2022-02-15 18:29:47

PCB board is an important part of modern electronic equipment. Due to the small volume and high installation density of patch components, the integration of PCB board is required to be further improved. Attention should also be paid to details during testing, so as to better prepare and ensure product quality. Before PCB testing, understand the working environment of the equipment, mainly considering the possible impact of external electrical parameters on the equipment; Ask what happens when the circuit board fails, and analyze the causes of the failure; Carefully check the components on the circuit board to find out which components play a key role in the circuit board; Take anti electromagnetic, static and other interference measures. View >>

Date：2022-02-15 18:19:42

Common IC failure modes: electrostatic damage, metal electromigration, chip bonding failure, over electric stress loss, metal fatigue, thermal stress, electromigration failure, physical damage failure, plastic packaging failure, lead bonding failure. When it comes to the causes of MLCC failure, under the normal use of the product, the root cause of failure is that there are various micro defects outside or inside the MLCC, such as cracking, holes, delamination and so on. These defects directly affect the electrical performance and reliability of MLCC products, and bring serious hidden dangers to product quality. View >>

Date：2022-02-14 18:07:00

The false soldering of components is that there are only a small number of tin welding posts at the solder joint, resulting in poor contact, on and off. Both false welding and false welding refer to that the surface of the weldment is not fully coated with tin, and the weldment is not fixed by tin. It is caused by the unclean surface of the weldment, too little flux and too short welding time. View >>

Date：2022-02-14 17:58:30

As the core component of electronic products, the performance of chip tends to be better and better. In order to ensure the quality of chip, people have adopted effective testing technology to test the function of chip. The main function of the chip is to complete the operation and processing tasks. Chip refers to the silicon chip containing integrated circuit. In the current process, in order to ensure the quality of the chip, chip detection is generally carried out in the process from design and molding to mass production. View >>

Date：2022-01-26 13:40:00

Reliability test refers to measuring and verifying the reliability of products through tests. The research finds out the weak links of products under the condition of limited samples, time and use cost. Reliability test is the general name of various tests carried out to understand, evaluate, analyze and improve the reliability of products. It is mainly to predict the quality of the product from the factory to the end of its service life. After selecting the environmental stress with high similarity to the market environment, set the degree and application time of environmental stress. The main purpose is to correctly evaluate the reliability of the product in a short time as possible. View >>

Date：2022-01-26 13:30:00

Circuit breaker refers to the switching device that can switch, carry and disconnect the current under the normal circuit state and disconnect the current under the abnormal circuit within the specified time. It can also be used to distribute electric energy, start asynchronous motor infrequently and protect power lines and motors, When they have serious overload, short circuit, undervoltage and other faults, they can automatically cut off the circuit. Their function is equivalent to the combined equipment of fuse switch and over and under heating relay. They are generally composed of contact system, arc extinguishing system, operating mechanism, release, shell, etc. View >>

Date：2022-01-26 13:25:00

The test to measure, verify or improve the reliability of products is called reliability test. It is an important link of product reliability. The quality inspection refers to whether the characteristics of the product are consistent with the specified standards, mainly considering the compliance. The reliability test is generally phased, while the quality inspection is routine. View >>

Date：2022-01-25 16:32:00

Q: Classification of contact current a: for electronic products with different structures, the measurement of contact current also has different requirements, but in general, the contact current can be divided into ground leakage current, surface to line leakage current and surface to surface leakage current. View >>

Date：2022-01-25 16:00:00

Cold and hot shock test, also known as temperature shock test or high and low temperature shock test, is used to assess the adaptability of products to the rapid change of ambient temperature. It is an indispensable test in the identification test of equipment design finalization and routine test in batch production stage. In some cases, it can also be used for environmental stress screening test. It can be said that the frequency of application of cold and hot shock test box in verifying and improving the environmental adaptability of equipment is second only to vibration and high and low temperature test. View >>

Date：2022-01-25 15:00:00

With the development of the automobile industry, there are more and more electronic components such as body control electronics, entertainment multimedia electronics, navigation and on-board communication, which increase the complexity of vehicles, and the environment in which cars are used is particularly harsh, such as all kinds of climatic environment, increasingly polluted atmospheric environment, bumpy and complex road surface and all kinds of radio interference, Are testing the reliability of automotive electronic products. View >>