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Author Archives: WorkingBear
Mar19
Why RA Copper Is Preferred Over ED Copper for FPC Applications?
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
Mar12
The Difference Between ED Copper and RA Copper in FPC
Modern electronic devices keep getting smaller, and that trend has driven the widespread use of Flexible Printed Circuit Boards (FPCs). One interesting thing about FPCs is that in many designs you can actually see the internal traces from the outside, … Continue reading
Mar10
FPC Structures — Single-Sided and Double Access Designs
FPCs (Flexible Printed Circuit Boards) can be categorized by their structure and complexity. Common types include single-layer, double-layer, and multi-layer flexible circuits. There is also a hybrid design called rigid-flex, which combines both flexible and rigid PCBs in the same … Continue reading
Mar04
What Is an FPC (Flexible Printed Circuit Board)?
Caption: The FPC is inserted into a connector on the PCB. At a basic level, FPCs and PCBs are very similar in both function and structure. Whether it’s an FPC or a PCB, both use copper traces on the surface—and … Continue reading
Feb10
Waiver, Concession & Deviation in Electronics Manufacturing: Engineer’s Guide to Risk Checks & Self-Protection
Caption: Every time I’m asked to sign a waive/concession approval, I can’t help but feel uneasy. (Boss asks you to approve a concession? How engineers protect themselves from taking the blame.) Have you ever been in this situation? It’s late … Continue reading
