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SMT processing manufacturer: What are the temperature and humidity requirements for an SMT patch processing workshop?
What are the temperature and humidity requirements for an SMT surface mount technology processing workshop? What factors affect the first-pass yield rate? Let's explore this with SMT processing manufacturers. SMT manufacturers say that if the workshop environmental conditions are not well controlled, electronic components and soldering effects may be damaged, and the entire SMT circuit may fail. Below, SMT manufacturers will provide a detailed introduction.
What are the temperature and humidity requirements for an SMT surface mount processing workshop? What factors affect the first-pass yield? SMT processing manufacturer Let's explore this together. SMT processing manufacturers say that if the workshop environmental conditions are not well controlled, electronic components and soldering effects may be damaged, and the entire SMT circuit may fail. Below, the SMT processing manufacturer will give a detailed introduction:
Therefore, we know that substandard temperature and humidity have a great impact on the quality of SMT chip manufacturing. So how should the SMT chip processing workshop control temperature and humidity?
1. Correct temperature requirements: The optimal temperature for the SMT workshop is 24℃, and the humidity is 40-60% RH.
2. Humidity requirements: The humidity in the workshop poses a great hidden danger to product quality. The higher the humidity, the easier it is for electronic components and SMTs to absorb moisture, affecting the solderability and conductivity of the products. When the workshop air is dry, the solder is not easily wetted, resulting in cold solder joints. The dry air in the workshop can also generate static electricity, so when entering the SMT chip processing workshop, staff also need to wear anti-static clothing. Normally, the workshop needs to maintain a constant humidity of 40% to 60% RH.
3. Cleanliness requirements: Ensure that the SMT workshop is dust-free, equipment and components are clean, and there are no corrosive substances, reducing SMT equipment troubleshooting and improving production progress. A workshop cleanliness of approximately BGJ73-84 is ideal.
SMT processing manufacturer First pass yield is a very important indicator for SMT surface mount processing plants. First pass yield refers to the parameter of a product passing from the first process to the last process without defects. It reflects the enterprise's quality control capabilities and its ability to meet customer product requirements. The higher the first pass yield, the stronger the capability.
For processing plants that also require SMT, the first pass yield means whether the delivery time can be maximized. The higher the first pass yield, the shorter the delivery time. So what factors affect the first pass yield? Below, the editor of the SMT processing manufacturer will share some information:
First, the process design for first-pass yield requires the support of experienced engineers. Process design guided by first-pass yield generally goes through the following stages:
(1) Master a large number of typical cases.
(2) Understand the process characteristics of each package and what problems are likely to occur.
(3) Understand the mechanism and causes of each type of defect.
(4) Master effective solutions and measures.
Second, if the SMT processing plant does not have these processes, it will be difficult to achieve the process design for first-pass yield! To improve the first-pass yield, there are five main process methods that can be improved during production:
(1) Optimize the steel bar mesh design.
(2) Select the appropriate solder paste.
(3) Optimize the printing operation.
(4) Optimize the temperature curve.
(5) Use tooling to improve process methods.
For more related content, please contact our SMT processing manufacturer.
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