Do you know the importance of PCB Legend?
In PCB design, PCB Legend can help improve the accuracy of PCB manufacturing and assembly, thereby improving overall efficiency and reliability.
What is PCB Legend?
PCB Legend is a key component for assembly and troubleshooting, providing part identification tracking through letters, numbers, codes and symbols printed on copper pads or screen printed on circuit boards. It includes component identification, test point marking, polarity marking, manufacturer information, etc. printed on the surface of the PCB, and the material used is high temperature resistant ink. Their respective functions are:
Component identification: Helps identify and locate components on the PCB.
Test point marking: Used for testing and debugging circuits.
Polarity marking: Ensure that components are installed correctly.
Manufacturing information: Provide information such as manufacturer and production date.
The importance of PCB Legend
According to the industry standard IPC-2221 (Generic Standard on Printed Board Design), the quality of PCB Legend can affect the manufacturability and maintainability of the PCB. A clear PCB Legend can reduce the assembly error rate by about 30% and improve production efficiency by about 20%. Not only that, the product rework rate using high-contrast, high-resolution PCB Legend is 15% lower than that using low-quality PCB Legend. And clear identification helps save an average of about 10 minutes of assembly time per circuit board.
Conclusion
High-quality PCB Legend is an important part of PCB design and manufacturing. Clear parameters can significantly improve the error rate and rework rate of PCBs, improve production efficiency, and follow industry standards and best practices, which will make product quality better and better.
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