Date：2022-10-12 15:57:54

RoHS directive originated from the European Union, with the rise of the production and use of electrical and electronic products (also known as EEE). During the use, treatment and disposal of environmental electrical equipment, harmful substances (such as lead and cadmium) may be released, resulting in serious environmental and health problems. RoHS helps prevent such problems. It limits the existence of specific harmful substances in electrical products, and safer substitutes can replace these substances. The following is a brief analysis of ROHS detection for your reference. View >>

Date：2022-10-12 15:56:11

The quality of crystal oscillator is directly related to the stability of the whole system. The specific selection not only requires detailed control of crystal oscillator parameters, but also refers to the requirements of different systems. Improper selection may cause the crystal oscillator to fail to vibrate. This paper will analyze the specific factors leading to crystal oscillator failure? How to avoid or solve this problem. View >>

Date：2022-10-12 15:54:49

1. Repeated short circuit test indicates that the module can realize protection or retraction when the module output is short circuited under various input and output states. Repeated short circuit test indicates that the module can automatically resume normal operation after troubleshooting. View >>

Date：2022-09-30 13:54:39

In lead solders, lead exists as a basic element. In lead-free solders, the basic elements do not contain lead. With the strengthening of people's awareness of environmental protection, the use of lead in various industries is becoming more and more cautious. Among them, in smt chip processing, customers in different industries will be asked whether there are lead-free requirements for the welding process, which means that electronic manufacturing has very strict requirements for lead-free assembly process. View >>

Date：2022-09-30 13:53:30

RoHS testing and certification is a third-party testing agency. RoHS certification is the Directive on Restricting the Use of Certain Hazardous Substances in Electrical and Electronic Equipment, which stipulates that 10 hazardous substances, including lead, cadmium, mercury, hexavalent chromium, polybrominated diphenyl ethers, polybrominated biphenyls, and DEHP, DBP, BBP, DIBP, are restricted in electrical and electronic products. View >>

Date：2022-09-29 14:11:44

Generally speaking, soldering tin is an alloy composed of tin (melting point 232 degrees) and lead (melting point 327 degrees). Soldering tin is an important industrial raw material for wire welding. It is widely used in the electronic industry, common household appliances and so on. It can be said that we cannot live without tin. In order to help you understand, the following contents are organized by the Core Creation Testing Network for your reference. View >>

Date：2022-09-29 14:07:49

The product quality inspection report shall be handled in the quality inspection and supervision offices of various provinces and cities. The inspection report, also known as the "inspection report of damaged goods", is an objective written certificate issued by the inspection agency after the inspection of damaged goods at the request of the applicant. In international trade, independent inspectors with credit, authority and detachment are often entrusted to inspect the extent of damage and identify the goods. Article 14 of the Product Quality Law The State shall, in accordance with the internationally accepted quality management standards, implement the enterprise quality system certification system. This paper collects and sorts out some materials, hoping to be of great reference value to all readers. View >>

Date：2022-09-28 11:52:09

The application fields of electronic and electrical products are becoming wider and wider, and the environmental conditions they are subjected to are becoming more and more complex and diverse. Only when the environmental conditions of the products are reasonably specified and the environmental protection measures of the products are correctly selected, can the products be protected from damage during storage and transportation and be safe and reliable during use. In our natural environment, temperature and humidity are two inseparable natural factors. Different regions have different temperature and humidity effects due to different geographical locations. Therefore, the artificial simulation environment test of electronic and electrical products is to ensure their safety and reliability in production, transportation, use and other aspects. View >>

Date：2022-09-28 11:50:39

With the increase of electronic equipment, there are more and more PCBA processing industries. The inspection of PCBA circuit boards after welding is very important for PCBA processing manufacturers and customers. In particular, many customers have strict requirements for electronic products. If they do not check, performance failures are likely to occur, affecting product sales, as well as corporate image and reputation. Then, how to detect the quality of PCBA circuit board after welding? Next, let's introduce it to you. View >>

Date：2022-09-27 17:17:20

Resistance is the most numerous component in electrical equipment, but it is not the component with the highest damage rate. Open circuit is the most common resistance damage. It is rare for the resistance value to become larger, and it is rare for the resistance value to become smaller. The resistance of common carbon film, metal film resistor and wire wound resistor can be directly measured with the resistance gear of ordinary pointer multimeter. When the parameter mark of the resistor falls off for some reason or the precise resistance value is not known, it is necessary to measure it with an instrument. In order to help you understand, the following contents are organized by the Core Creation Testing Network for your reference. View >>