Solder Stories

In the field of high-temperature soldering, the selection of solder directly impacts both soldering quality and equipment reliability. As industrial manufacturing evolves toward higher precision and greater temperature resistance, the demand for high-temperature solder continues to grow. Renowned high-temperature solder brands from both domestic and international markets.

Transparent or translucent liquid primarily composed of rosin, activators (such as organic acids or halides), solvents (e.g., alcohol, acetone), and antioxidants. Characteristics: High fluidity, volatile nature; requires sealed storage to prevent solvent evaporation and performance degradation.

The extreme operating environments of military electronics (e.g., high temperatures, high humidity, strong vibrations, huge temperature differences) place almost exacting demands on the materials used in their assembly - especially solder paste alloys. The core of their selection is always centred around the three principles of reliability, durability and resistance to extreme conditions.

Definition：Lead-free solder paste has developed rapidly as an alternative to leaded solder paste. EU's RoHS ISO9453 and Japan's JEIDA stipulate that solder alloys with Pb content less than 0.1wt% (1000ppm) can be defined as lead-free solder alloys.

Gold embrittlement is a soldering defect that refers to solder joints that contain too much intermetallic compound (IMC), resulting in increased brittleness and reduced reliability.

Grape ball effect refers to the SMT reflow process, the paste can not be completely melted and wet pads, and the formation of a small ball similar to grapes, affecting the reliability and appearance of the solder joints. The causes of the grape ball effect is mainly related to the quality of the solder paste, printing process, reflow profile and other factors. In this paper, we will focus on analysing the effective life of the solder paste after printing on the impact of the grape ball effect.

In surface mount technology (SMT) production processes, solder paste inspection (SPI) and automatic optical inspection (AOI) serve as two core quality control technologies. Through their distinct functions and collaborative efforts, they jointly establish an efficient quality assurance system.

In electronics manufacturing and PCB (Printed Circuit Board) production process, the pads do not tin and through-hole is a common process defects, may be caused by design, materials, process or environmental factors. This article will systematically sort out the root causes of these two types of problems from a technical point of view and provide targeted solutions.

SAC305 has been widely used as a substitute for lead solder on the market. The reliability of SAC305 has always been a concern in the industry.

In the field of micro-optical display (Mini LED, Micro LED and COB package), the choice of solder paste needs to synthesize the three core dimensions of chip size, encapsulation process and reliability requirements, the specific program is as follows: ---------------- 版权声明：本文为CSDN博主「2403_87985219」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。 原文链接：https://blog.csdn.net/2403_87985219/article/details/154065382

The flip chip assembly process typically includes soldering, flux residue removal and underfill. As chips continue to miniaturize, the gap between the flip chip and the substrate decreases, making it increasingly difficult to remove flux residue.

The use of low-temperature solder paste in the electronics industry is gaining attention, especially with the miniaturization of integrated circuit components and the increase in the number of I/Os. While the traditional lead-free SAC solder reflow process is commonly used, high temperatures tend to lead to reliability problems, including low process yields and poor thermal cycling performance, which are often associated with warpage.

Nine years ago a meteorite plunged into earth, and spread a heat wave all around the globe, as a result from it many kids become mutated and gained strange abilities. ________ Nicoleta Ariti is a fifteen year old girl with fire abilities in westinsenson son, the facility built to help and train all the super powered children. Nicoleta's goal is to gain control over her powers and go home and live a normal life, and so she does everything she can to get closer to going home. However life has other plans, when a sudden attack from unearthly creatures causes a war that changes the course of her life forever.

When it comes to electronic circuits, we must talk about the electronic components soldered on PCBs. At present, most electronic circuits are composed of surface-mounted components. The mounting method of such electronic components is relatively simple.

https://www.ptc-stress.com/products/amb-solder-defect-automatic-inspection-equipment.html This equipment is a self-innovated developed automatic system for AMB defect inspection, including loading machine, AOI machine, unloading machine and workstation. It can greatly improve the product detection rate, thereby improving production efficiency for enterprises and save production costs, realizing one-stop automatic operation.

Solder Drawbridge Effect: Analysis of the Monumental Phenomenon in Surface Mount Technology

Solder paste not adhering to the pad is a common problem in electronic soldering, usually caused by oxidation, contamination, insufficient temperature or solder/flux problems. The following are the detailed troubleshooting and solutions:

In order to protect human health and safety and to improve the environmental performance of electronic equipment, the European Union adopted the Restriction of Hazardous Substances (RoHS) Directive in 2006,

The core steps of the lead-free soldering process are listed below, each of which contains key control points to ensure solder quality:

Technical Analysis of Kirkendall Cavities and Ni Oxidation in ENIG Pad Welding