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Design Guideline of Semi-Flex PCB for Innovative Supply Chain Solutions

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Questions and Answers

What is the purpose of using a semi-flex PCB instead of a traditional flex-rigid PCB?

To increase the number of bending cycles in high-flex applications
To reduce the cost in applications with minimal bending requirements (correct)
To enhance the speed of production for PCBs
To improve the overall thickness of the PCB

How is a semi-flex PCB created according to the text?

By milling the selective area of a traditional rigid PCB to reduce its thickness (correct)
By laser cutting specific patterns on a rigid PCB
By using a specialized heating process on a standard PCB
By adding layers to a flexible PCB to increase its bending capabilities

What is the key factor mentioned for ensuring the depth during mass production of semi-flex PCBs?

Increasing the spindle speed during milling
Using thicker back up panels for support
Enhancing the speed of production by doubling routing bit life
Minimizing deviation of the original surface level of each spindle (correct)

What step is involved in selective control depth milling for semi-flex PCBs?

Rout out a caving area to ensure a customer array could be put into (B) Signup and view all the answers

How does thin web thickness PCB provide an advantage over traditional flex-rigid PCB?

It offers same function and higher reliability at lower costs in applications requiring minimal bending (D) Signup and view all the answers

What is the purpose of adjusting the height of the spindle according to the web thickness?

To ensure a perfect starting surface level for all spindles (A) Signup and view all the answers

Why is it important to fix the array in the caving area of the back-up panel?

To prevent damage during bending processes (C) Signup and view all the answers

What is the significance of using a special fine tip micrometer to check the web thickness dimension?

To determine the overall PCB dimensions accurately (B) Signup and view all the answers

According to the design guideline, what is the recommended arc value?

$0.4$ mm x $45^{\circ}$ (B) Signup and view all the answers

What are the limitations mentioned for semi-flex PCBs?

Bend radius limited to $5$ mm minimum (B) Signup and view all the answers

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