Date：2022-04-22 14:41:21

With the increasing requirements of industrial, military and civil departments for the quality of electronic products, the reliability of electronic equipment has attracted more and more attention. Screening electronic components is one of the most effective measures to improve the reliability of electronic equipment. The purpose of reliability screening is to select highly reliable components from a batch of components and eliminate products with potential defects. Broadly speaking, in the production process of components, various process quality inspections and electrical parameter tests of semi-finished products and finished products are screening, and what we are talking about here is the reliability screening specially designed to eliminate early failure components. View >>

Date：2022-04-21 15:10:58

The test conducted to evaluate and analyze the reliability of electronic products is called reliability test. It simulates the environmental accelerated test according to the factors such as different use environments and stress of different environments that the products may encounter in the use process, so as to evaluate the performance and adaptability of products or sample materials, and provide quantitative technical indicators of environmental adaptability of products or sample materials for scientific researchers and product development engineers. View >>

Date：2022-04-21 15:02:51

The rapid development of electronic component technology and the improvement of reliability have laid the foundation of modern electronic equipment. The fundamental task of component reliability is to improve the reliability of components. Generally speaking, the failure of electronic products in the narrow sense refers to the phenomenon of the loss of function of mechanical and electrical products, while failure analysis is to analyze and diagnose the mode, causes and mechanism of failure, and study the technical and management activities of taking remedial, prediction and preventive measures. At the same time, the comprehensive discipline intersecting with related theories, technologies and methods is called failure science. View >>

Date：2022-04-21 14:06:13

Failure analysis is a new developing subject, which has been popularized from military industry to ordinary enterprises in recent years. It is generally based on the failure mode and phenomenon, through analysis and verification, simulate and reproduce the failure phenomenon, find out the cause of failure, and dig out the failure mechanism. It has strong practical significance in improving product quality, technology development and improvement, product repair and arbitration of failure accidents. The methods are divided into destructive analysis, nondestructive analysis, physical analysis, chemical analysis and so on. The reason for the high early failure rate is that there are unqualified parts in the product; The reason for the high late failure rate is that the product components enter the failure period after long-term use. The running in of mechanical products and the aging screening of electronic components are the measures to ensure reliability according to this failure law. View >>

Date：2022-04-21 13:46:53

Nondestructive testing is a method to inspect and test the structure, properties and state of the internal and surface of the test piece by means of physical or chemical methods and with the help of advanced technology and equipment without damaging the test piece. In order to help you have an in-depth understanding, the following contents are sorted out by the core testing network, and the NDT Technical methods are summarized as follows: View >>

Date：2022-04-20 17:43:09

Nondestructive testing is a test method to check the surface and internal quality of the inspected parts without damaging the working state of the workpiece or raw materials. Use the acoustic, optical, magnetic and electrical characteristics to detect whether there are defects or non-uniformity in the tested object, give the information such as the size, location, nature and quantity of defects, and then determine the general name of all technical means of the technical state of the tested object (such as qualified or not, remaining life, etc.). In order to help you have an in-depth understanding, this paper will summarize the relevant knowledge of weld nondestructive testing. If you are interested in what this article will cover, read on. View >>

Date：2022-04-20 17:30:00

Weld quality standard I. guarantee item 1. The welding materials shall meet the design requirements and the provisions of relevant standards, and the quality certificate and baking records shall be checked. View >>

Date：2022-04-20 15:38:46

Switching power supply chips can be divided into AC / DC power supply chips and DC / DC power supply chips. DC / DC converters have been modularized, and the design technology and production process have been mature and standardized at home and abroad, and have been recognized by users. However, the modularization of AC / DC has encountered more complex technical and process manufacturing problems in the process of modularization due to its own characteristics. Power chip is an indispensable component of electronic equipment. If the power chip is damaged in the circuit, the electronic equipment will stop working. How to detect the quality of power chip? If you are interested in what this article is about to cover, you might as well read on. View >>

Date：2022-04-20 15:00:00

Generally, when evaluating electronic components, its safety performance should be considered from the following aspects: 1 Withstand voltage (electric strength) - prevent electric shock injury 2 Insulation resistance - prevent electric shock injury 3 Grounding resistance - prevent electric shock injury 4 Leakage current - prevent electric shock injury View >>

Date：2022-04-19 15:14:09

Before the electrical system and electrical equipment are put into use, the electrical test is to test the insulation performance, electrical characteristics and mechanical properties of each electrical equipment in the electrical system item by item according to the relevant provisions of standards, procedures and specifications, so as to timely find and eliminate the defects, errors and quality problems of electrical equipment during manufacturing and installation, and ensure that the electrical system and electrical equipment can be put into normal operation. View >>