Oct11
Do PCB Designs Require Reserving Board Edges and Grooves for Routers De-Paneling Machines?

post on October 11, 2023

Do PCB Designs Require Reserving Board Edges and Grooves for Routers De-Paneling Machines?

A while back, a netizen asked how the Router de-panel machine cuts PCB panels and whether there’s a need to reserve board edges (break-away) for the Router machine in PCB design. Upon careful consideration, I thought my previous answer might have been too brief. So, in this post, I’ve decided to delve deeper into these questions.

If you’re still unsure why PCBs are panelized before SMT and PCB assembly then de-paneling it into individual PCBA after assembly or what need to reserve board edges for Router machines in PCB design, please refer to the article titled “Why is Panelization and Break-away Tab Necessary in PCB Manufacturing, then De-paneling after PCBA is Completed?“

read more…》

Manufacture, PCB/FPC/PTF, Process, SMT     WorkingBear    Views (1,506)     comment (0)
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Oct04
How to Evaluate the Risk and Probability of Electronic Components Not Falling Off during SMT Second Reflow

post on October 4, 2023

How to Evaluate the Risk and Probability of Electronic Components Not Falling Off during SMT Second Reflow

PCB assembly through SMT double-sided reflow soldering has become the mainstream process in contemporary electronic manufacturing. However, occasionally, many individuals inquire, “Is there a method to proactively determine, or is there any calculation formula to predict the risk or rate of components falling off during the second reflow on the first side?”

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Manufacture, SMT, Soldering     WorkingBear    Views (2,105)     comment (0)
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Sep27
PCB Board Edge Removal and Panelization: Pros and Cons of Router Panel Cutting

post on September 27, 2023

There are several methods to cut and separate pre-panelized PCBs into individual boards, and one commonly adopted approach for thin and finely dimensioned mobile phone PCBs is using a Router Cutting Machine. It offers numerous advantages over V-Cut scoring machines, with the primary benefit being a higher quality of panel separation, surpassing the benefits of manual operation.

If you’re not yet familiar with why printed circuit boards (PCBs) are panelized before assembly and then separated, please refer to the article titled “Why is Panelization and Break-away Tab Necessary in PCB Manufacturing, then De-paneling after PCBA is Completed?”

read more…》

Manufacture, PCB/FPC/PTF, Process, SMT     WorkingBear    Views (1,424)     comment (0)
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Sep21
PCB De-Paneling: V-cut scoring de-paneling and removing board edges

post on September 21, 2023

PCB De-Paneling: V-cut scoring de-paneling and removing board edges

The term “V-cut” refers to a pre-cut separation groove made by printed circuit board (PCB) manufacturers at specific locations on the PCB. This groove is designed to facilitate the “de-paneling” process after the completion of surface mount technology (SMT)  and PCB assembly. Its cut shape resembles the letter “V,” as shown above, hence the name.

Since PCBs primarily use fiberglass as their structural material, they possess considerable strength and hardness. Attempting to manually break them apart is impractical, which is why pre-cut grooves like V-Cut are essential for operators on the production line to easily perform the PCB de-paneling process.

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Manufacture, PCB/FPC/PTF, Process     WorkingBear    Views (2,672)     comment (0)
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Sep14
What is V-cut? Why PCB need to design V-cut on it?

post on September 14, 2023

What is V-cut? Why PCB need to design V-cut on it?

The term “V-cut” in the context of printed circuit boards (PCBs) refers to predefined cutting lines made by PCB manufacturers based on customer drawings. These lines are typically arranged in a V-shaped pattern, resembling the letter “V,” which is why they are called “V-Cuts.”

The primary purpose of including V-Cuts on a PCB is to facilitate the process of “de-paneling” after the completion of Surface Mount Technology (SMT) PCB assembly. PCBs are primarily constructed using fiberglass as their main structural material, which provides them with a certain degree of strength and hardness. Trying to manually break or snap a PCB by hand is virtually impossible, and even if it were possible, it would likely damage the electronical components on the PCB. Therefore, the presence of these pre-cut V-Cut lines serves the specific purpose of aiding assembly workers in cleanly and accurately separating the original panel into individual boards. This separation process is referred to as “de-paneling.”

read more…》

Manufacture, PCB/FPC/PTF, Process     WorkingBear    Views (2,270)     comment (0)
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