How to improve the first pass rate in SMT chip processing and production

Mondo Technology Updated on 2024-01-24

One-stop PCBA intelligent manufacturing manufacturers today will tell you how to improve the first-pass rate of SMT chip processingFactors influencing the first-pass rate of SMT chip processing. An important measure of a company's or line's profitability in SMT placement is: "First-pass rate." "Similarly, for customers who need PCBA machining, the first-pass rate means whether the delivery date can be on schedule, and the higher the first-pass rate, the shorter the delivery date. So what are the factors that affect the first-pass rate in SMT chip processing?

In the face of the first-pass rate, we have summarized two modules, one is pre-production and the other is post-production. Today we will mainly analyze the pre-production, that is, the process design stage.

The first-pass rate-oriented process design is mainly based on the PCB process refinement design to ensure zero-defect single-board manufacturing. Usually, we hear mostly about design for manufacturability (DFM), and rarely hear about first-pass oriented process design because most factories don't have the knowledge of it, and even if they do, they don't realize the importance and complexity of first-pass oriented design.

First, the process design of the first-pass rate needs the support of experienced engineers. Process design for first-pass rate typically requires the following phases:

1) Master a large number of typical cases.

2) Understand the process characteristics of each package and what problems are prone to arise one by one.

3) Understand the mechanism and causes of each undesirable phenomenon.

4) Master effective solutions and measures.

Second, if the SMT processing plant has not experienced these processes, it is difficult to achieve a first-pass rate-oriented process design!In the production stage, there are five main process means to improve the first-pass rate, which can be improved:

1) Optimize the stencil design.

2) Choose the right solder paste.

3) Optimize printing operations.

4) Optimize the temperature profile.

5) Adopt tooling and improve process methods.

How to improve the first-pass rate of SMT chip processing?If you want to know more about the factors that affect the first-pass rate of SMT chip processing, you can pay attention to Lingzhuo PCBA, if you need to know more about PCB proofing, SMT patch, PCBA processing related technical knowledge, welcome to leave a message to get!

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