Date：2022-03-21 16:13:04

Integrated circuit chip is an important part of electronic products. In case of refurbished chip, there is a high probability of system failure and even major safety accidents. Today, let's talk about the difference between original chip, scattered new chip and renovated chip. View >>

Date：2022-03-18 17:36:53

It can be used to measure the size and angle of products in real-time, such as the size of products, visual measurement and so on. It can not only increase production capacity, but also reduce people's burden. It can work continuously for a long time. Today, we want to understand the machine vision equipment. Do you want to understand the working principle of vision equipment? Let's have a look. View >>

Date：2022-03-18 14:00:00

Quality certification is an internationally accepted means of quality management and a tool for trade facilitation. It is an important part of national quality infrastructure. In terms of "bottom line", "quality assurance" and "service management" of enterprises, it can play a role in ensuring and improving the quality of products and services, and strengthen the "bottom line" of enterprises; It can provide consumers with quality certificates from the demand side, guide consumer behavior, enhance consumer confidence and better protect consumers' rights and interests. View >>

Date：2022-03-17 16:55:00

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：2022-03-17 16:00:00

Welding, which can also be written as "welding" or welding and fusion, is a processing technology and connection method that two or more materials (the same or different) produce atomic bonding between two workpieces through heating, pressurization, or both. Soldering components with electric soldering iron is a basic assembly process, which plays a key role in ensuring the quality of electronic products. The welding skills and precautions of some components are introduced below. View >>

Date：2022-03-17 15:32:00

To weld the patch components on the self-made PCB board, similarly, two pads of the patch components should be made on the PCB board, which is the same as the factory processed PCB board. The welding of SMT chip mounted components should use 200 ~ 280 ℃ temperature regulating pointed soldering iron. View >>

Date：2022-03-16 17:49:13

IGBT (insulated gate bipolar transistor), also known as insulated gate bipolar transistor, is a composite fully controlled voltage driven power semiconductor device composed of BJT (bipolar triode) and MOS (insulated gate field effect transistor). Its input pole is MOSFET and output pole is PNP transistor. Therefore, it can be regarded as a Darlington transistor with MOS input. It combines the advantages of high input impedance of MOSFET and low on voltage drop of GTR. It has the characteristics of easy driving, large peak current capacity, self turning off and high switching frequency (10-40 kHz). It has gradually replaced thyristor and GTO (gate turn off thyristor). It is the fastest developing one at present View >>

Date：2022-03-15 18:34:48

The failure mode of varistor is mainly short circuit. However, short circuit will not cause damage to varistor, because the resistance is at the positive and negative inlet of power supply; The insurance is good, which proves that it is not caused by short circuit or overcurrent. It may be that the surge energy is too large and exceeds the absorbed power to burn the varistor; When the overcurrent is too large, it may also cause the valve plate to be cracked and open circuit. View >>

Date：2022-03-15 18:25:21

"Lead free" here refers to Wuxi welding line. Lead free tin wire is a product of welding wire. Tin wire can be divided into lead-free tin wire and lead-free tin wire, both of which are used for the welding of circuit board. Lead free solder wire is also called environmental protection tin wire. Lead free solder wire is also called environmental protection tin wire. Its main components are tin (SN), silver (Ag), copper (Cu), and the rest include trace lead (PB), mercury (Hg), cadmium (CD), polybrominated biphenyls (PBBs), etc. It is characterized by good weldability, good wetting performance, uniform distribution of rosin in the line, good continuity, no odor, less smoke, no splash during welding, no toxic volatile gas, and a little yellow on the surface. View >>

Date：2022-03-14 17:31:59

Soldering iron head is a supporting product of electric soldering iron, which is integrated. When using electric soldering iron for welding, it is often encountered that the soldering iron head is not stained with tin. If the soldering iron head is not stained with tin, the welding operation cannot be carried out. In the final analysis, the reason for the failure of the soldering iron head is that the soldering iron head is not tin coated and cannot be welded. The reasons for the failure of the soldering iron head are as follows: View >>