Date：2022-11-15 16:24:00

In engineering, according to the requirements of the output port on the signal frequency range, a special network is designed and placed between the input and output ports to enable the required frequency components of the output port to pass smoothly, while suppressing or weakening the unwanted frequency components. This kind of intermediate network with frequency selection function is called a filter in engineering. The following is a brief analysis of the detection filter for your reference. View >>

Date：2022-11-14 18:18:08

连接器可靠性是电子系统中的重要因素,并且可能对产品性能产生重大影响。作为一个可拆卸的单元，它的配套连接器接口可以被移除，允许独立制造零件以便在中心位置组装，并且更容易维护和升级组件。 连接器的可靠性是电子系统中的一个重要因素，并且会对产品性能产生重大影响。 View >>

Date：2022-11-11 14:35:08

The inherent reliability of electronic components depends on the reliability design of products. Therefore, before the electronic components are installed on the whole machine and equipment, the components with early failure should be eliminated as much as possible. Therefore, the components should be screened. What are the common screening items for electronic components? Next, we will briefly introduce the common screening items of electronic components. Let's have a look! View >>

Date：2022-11-11 14:34:59

Relay is an electrical control device, which can make the controlled quantity have a predetermined step change in the electrical output circuit when the change of input quantity (excitation quantity) meets the specified requirements. In the circuit, the relay plays the role of automatic regulation, safety protection, conversion circuit, etc. The following is a small compilation of relay detection quality related content, hoping to give you reference and help. View >>

Date：2022-11-10 14:59:59

Resistors are generally called resistors in daily life. They are one of the important electronic components and have a great impact on the normal use of circuits in the later period. We must pay attention to the detection of resistors. The resistance value of a resistance element is generally related to temperature, material, length, and cross-sectional area. The physical quantity that measures the resistance affected by temperature is the temperature coefficient, which is defined as the percentage of resistance value change when the temperature increases by 1 ℃. Next, let's take a look at the detection of positive temperature coefficient thermistors, negative temperature coefficient thermistors, varistors and photoresists. View >>

Date：2022-11-10 14:58:13

In the screening of semiconductor electronic components, reliability screening cannot improve the inherent reliability of products, but effective screening can find defects caused by design and manufacturing and feed them back to the quality control of design and production, so as to take corrective measures to really improve the reliability of products. We should pay attention to quality control, reasonably use the performance parameters of components, and play the role of electronic components. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-11-09 15:07:21

The most widely used screening method is aging, which allows semiconductor devices to overload under high temperature and high voltage conditions, so that defects can appear in a short time. Aging, also known as "sophistication", refers to the continuous application of a certain electrical stress to components at a certain ambient temperature for a long time, which accelerates various physical and chemical reaction processes inside the components through the combined action of electrical thermal stress, and promotes the early exposure of various potential defects hidden inside the components, so as to eliminate early failure products. View >>

Date：2022-11-09 15:07:18

Magnetic particle testing is a method of observing defects with magnetic particle as the display medium. According to the type of magnetic powder medium applied during magnetization, the testing methods are divided into wet method and dry method; According to the time of applying magnetic powder to the workpiece, the inspection methods are divided into continuous method and remanence method. View >>

Date：2022-11-08 14:40:22

Electrolytic capacitor is a kind of capacitor. The metal foil is the positive pole (aluminum or tantalum). The oxide film (aluminum oxide or tantalum pentoxide) that is close to the metal with the positive pole is the dielectric. The cathode consists of conductive materials, electrolyte (electrolyte can be liquid or solid) and other materials. Since the electrolyte is the main part of the cathode, the electrolytic capacitor gets its name. At the same time, the positive and negative of the electrolytic capacitor must not be connected incorrectly. Aluminum electrolytic capacitors can be divided into four categories: lead type aluminum electrolytic capacitors; Horn type aluminum electrolytic capacitor; Bolt type aluminum electrolytic capacitor; Solid aluminum electrolytic capacitor. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-11-08 14:36:34

Slicing technology, also known as section or metallographic section or microsection (English name: Cross section, X-section), is the most commonly used sample preparation and analysis method to observe the cross-sectional structure of samples. Slice analysis technology is one of the most common and important analysis methods in PCB/PCBA, parts and other manufacturing industries. It is usually used to determine the quality of work and analyze quality anomalies, inspect the quality of circuit boards, detect PCBA welding quality, find the causes and solutions of failure, and evaluate process improvement as the basis for objective inspection, research and judgment. View >>