Engineering Cases
Engineering Cases focuses on real PCB engineering reviews, manufacturing challenges, and production optimization processes from actual fabrication projects. This category highlights how different PCB designs are evaluated and adjusted during engineering review, covering topics such as stack-up analysis, impedance control, drill optimization, copper balancing, solder mask alignment, DFM review, and production risk assessment across various PCB applications. The content in this section is based on practical manufacturing scenarios rather than theoretical introductions. Each engineering case demonstrates how specific PCB issues are identified, analyzed, and resolved during production preparation and fabrication. These records help engineers, purchasers, and hardware teams better understand the relationship between PCB design decisions and manufacturing stability, yield control, and process reliability. Topics may include multilayer PCB engineering review, HDI process optimization, flexible PCB manufacturing considerations, heavy copper processing adjustments, surface finish selection, Gerber data verification, and other real-world PCB production experiences. By organizing engineering challenges and process solutions into structured case content, this category provides valuable insight into practical PCB manufacturing and engineering workflow management.
Featured Blog
PCB Solder Mask and Via Design Issues: What CAM Review Commonly Finds
Learn real PCB solder mask and via design issues found in CAM review, including solder mask bridge failures, via tenting vs open conflicts, resin plugged vias problems, and layer mismatches, plus practical ways to prevent them.
Latest Blogs
Optimizing PCB Production Markings for Traceability
Learn how CAM engineers optimized PCB production markings by placing year-week date codes and serial numbers on process rails. This ensures lot traceability, meets IPC Class 3 needs, and enables seamless sample-to-mass production transition.
Rogers 4350B PCB Design Guide: Avoiding Via-in-Pad SMT Failures
This Rogers 4350B PCB Design Guide explains how DFM review stopped Via-in-Pad voids, substrate yellowing, and edge copper exposure on a thin high-frequency board, protecting solder joints and assembly yield.
Via to Edge Clearance: Avoiding Broken Holes on Rogers PCB
Discover how DFM review fixed Via to Edge Clearance on a 2-layer Rogers RO4350B board, stopping hole breakout and exposed copper after V-cut by relocating vias and applying controlled copper trim for higher yield.
Optimizing FPC Edge Protection for Long Panel Production
Learn how production engineers prepared a long 600mm 2-layer FPC by adding 5mm waste edge protection, connection points for continuous panels, thickness control for white coverlay, and larger silkscreen characters to ensure efficient, reliable manufacturing.
FPC Stiffener Design Rules: Avoiding Common DFM Roadblocks
Discover how FPC stiffener design rules for outline pull-back and clearance holes, plus EMI film thickness limits on flex PCBs, required process capability evaluation to ensure reliable FR4 stiffener alignment and manufacturable stackup thickness.
PCB Silkscreen DFM: Solving Legend on Pad & Half-Hole Issues
Discover how DFM review found silkscreen characters on pads in a 2-layer FR-4 board and removed them to protect solder wetting, avoid incomplete HASL coverage, and eliminate assembly defects while confirming half-holes as NPTH.
Aluminum PCB CAM Review: Avoiding Costly Drill-Outline Mistakes
CAM review of a 1-layer aluminum MCPCB uncovered large outline circles inconsistent with the drill file plus silkscreen circles mistaken for holes. Clarification confirmed drill priority and ignored non-functional circles to protect thermal mass and outline accuracy.
PCB Panelization Slot Design: Why Your Gerber Needs Routing Paths
CAM review uncovers Gerber-PDF mismatch on routing slots versus stamp holes in a 4-layer customer panel. Zero process edge and missing 2 mm milling gap forced clarification to prevent outline errors and edge defects before production release.
How We Resolved PCB Solder Mask Opening Design Conflicts in a 2-Layer FR4 PCB
CAM review uncovered mixed via openings conflicting with tenting specs in a 2-layer FR4 PCB. Learn how zero-compensation processing and design clarification resolved PCB solder mask opening design issues to protect SMT yield.
How DFM Review Prevented Copper Exposure on Board Edges
Learn how DFM review spotted insufficient Pad to Outline Clearance on a 2-layer FR-4 panel, stopping copper exposure after contour routing and protecting yield through early engineering confirmation.
PCB Stamp Hole Design for Small 2 Layer FR4 Boards: CAM Case Study
Real CAM engineering case on a compact 14.33 × 23.11 mm 2-layer FR4 board where missing stamp holes, 0.6 mm hole solder-mask treatment, and production cycle marking required clarification. Learn how proper stamp hole design enabled reliable panelization and clean depanelization.
2-Layer FR-4 PCB Large Hole Precision Routing and Panelization Confirmation Case
Real CAM review of a 2-layer FR-4 board reveals large holes >3 mm needing precision routing, missing stamp holes on connection tabs, and tolerance clarification under IPC Class 2 to prevent edge defects and yield loss.
