Author Archives: WorkingBear


Apr15
Common Ways to Connect FPC to PCB: What Actually Works

post on April 15, 2026

As electronics keep getting smaller and more advanced, the need to connect flexible printed circuits (FPCs) to rigid PCBs continues to grow. In this article, Workingbear will walk you through the most common methods used in the industry today—and share some … Continue reading →

Design, PCB/FPC/PTF, Soldering     WorkingBear    Views (196)     comment (0)

Apr08
How I Troubleshoot Hidden Open Circuits in FPCs

post on April 8, 2026

Flexible printed circuits (FPCs) are widely used because they can bend and fold. They’re perfect for compact products or for connecting signals between different PCBAs. But there’s a downside. As usage increases—especially in applications with repeated motion—FPCs can develop open circuits or … Continue reading →

PCB/FPC/PTF, Quality, Uncategorized     WorkingBear    Views (183)     comment (0)

Apr02
Root Cause Analysis: Why FPC Traces Break

post on April 2, 2026

Recently, my company started seeing an increase in field returns caused by open circuits in flexible printed circuits (FPCs) inside the terminal. After digging into several cases, the root cause turned out to be broken copper traces. So what’s going … Continue reading →

Case study, PCB/FPC/PTF, Process, Quality, Reliability     WorkingBear    Views (429)     comment (0)

Mar26
How to Design FPC-to-PCB Connections for Better Assembly (DFx)

post on March 26, 2026

As electronic devices keep getting thinner and more compact, FPCs (flexible printed circuits) are used more and more. In some designs, FPCs even replace traditional PCBs. But no matter how advanced FPC technology becomes, it still needs to connect to … Continue reading →

Connector, Design, Manufacture, PCB/FPC/PTF, Process     WorkingBear    Views (732)     comment (0)

Mar19
Why RA Copper Is Preferred Over ED Copper for FPC Applications?

post on March 19, 2026

Recently, our team ran into a painful issue: cracked traces on an FPC. The problem quickly escalated, tying up engineering resources and causing significant losses for the supplier as well. As often happens after a failure, an old debate resurfaced—should … Continue reading →

PCB/FPC/PTF     WorkingBear    Views (581)     comment (0)