The composition of lead-free medium-temperature solder paste consists of two parts: solder alloy powder and flux paste. The general composition of the solder alloy is:S64.7Bi35Ag0.3,S64Bi35Ag1,S59.9Bi4Cu0.1,S69.5Bi30CU0.5,S82.5Bi17Cu0.5There are five specifications. The solder alloy part accounts for the total weight of lead-free medium-temperature solder paste90%-95%Between the two, solder alloy powder is composed of several alloy materials such as tin, silver, tin and copper, and the impurity residue standard of the alloy powder is required to contain......
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During the storage of lead-containing solder paste, if there is a sudden power outage and the storage temperature of the solder paste exceeds the standard, what should be done at this time? Today, the solder paste manufacturer will discuss with everyone the issue of excessive storage temperature for lead solder paste. Correct handling countermeasures for excessive storage temperature of leaded solder paste:1In case of sudden power outage, the temperature must not be lower than25℃At the same time25℃It can be stored for a relatively long time in such an environment24HIf the connection times out, it needs to be sent to the project for evaluation. Only after the analysis and evaluation are qualified can it be carried out. Otherwise, report it......
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Believe a lotSMTBuyers of surface mount technology (SMT) factories will all encounter such problems:The same lead-free solder paste may have different prices when searched online. Why? Today, the solder paste manufacturer will talk about the price of lead-free solder paste: The main factors influencing the price of lead-free solder paste are as follows:1The raw material prices: The raw materials for lead-free solder paste production are solder powder and flux. The prices of various solder powders and fluxes vary.2Solder paste produced by solder paste manufacturers with different manufacturing costs......
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During the use of tin bars, there is a considerable amount of tin slag, which can be classified into hand immersion furnaces and wave wave furnaces(Wave peak furnaces come in semi-automatic and fully automatic types)Let's conduct an analysis. Now, the solder paste manufacturer will lead everyone to analyze it:1Generally speaking, for hand immersion furnaces, the issue of excessive tin bars and tin slag is understandable and often occurs. Customers have reported that the tin surface turns yellow or purple. This situation might be due to significant temperature deviations during the operation of the furnace, such as high temperature or persistent tin furnaces......
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Generally speaking, solder paste is a paste-like mixture formed by mixing solder powder, flux, and other surfactants, thixotropic agents, etc. Its characteristics are determined by the alloy composition of the solder paste. How to know the alloy composition of tin powder in solder paste? The following Shenzhen solder paste manufacturer will share effective methods for testing the alloy composition and particle size of tin powder:1. Effective methods for testing the composition of tin powder alloys: On the one hand, the purpose of my testing is to ensure that the composition of the alloy and the ratio of impurities must be guaranteed......
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SHENZHEN JIAJINYUAN INDUSTRIAL TECHNOLOGY CO., LTD.
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Phone：+86 18938660310
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