Panelization isn’t just about fitting more PCBs into a manufacturing panel — it’s a critical step that affects cost, yield, and assembly efficiency. At Fumax, we’ve seen countless projects where great designs faced unnecessary delays or rework simply because panelization was handled too late or without understanding how it impacts real-world production.
Here’s what every hardware designer should know before sending out their Gerber files.
Many engineers leave panelization to the factory at the very end of the process. While most manufacturers can create the panel for you, doing so without designer input can lead to issues — like losing fiducials, misaligned tooling holes, or inefficient board usage.
In one recent IoT controller project, the customer’s design was perfect electrically but didn’t consider pick-and-place constraints. The components at the board edge couldn’t be supported during reflow, causing solder joint stress. After a quick redesign with 2 mm spacing and breakaway rails, the assembly yield jumped to 99.8%.
How your boards separate after production determines whether edges crack, components get damaged, or mechanical dimensions shift.
Production lines are optimized for standard panel sizes — typically 250×350 mm or 300×400 mm. If your panel doesn’t match standard jigs, it may require special tooling or extra setup.
Even a 5% optimization in panel utilization can save thousands over a mid-volume run. Our engineers use nesting simulations to find the best layout for SMT pick-up, reflow balance, and routing path.
Fiducials are the “eyes” of your SMT machines. Missing or inconsistent marks cause misalignment in component placement — especially in high-density boards.
Each panel should have global fiducials at three corners and local fiducials for dense or fine-pitch areas. Make sure they’re 1 mm copper dots with clear 3 mm clearance around them — small details, but they make automation smoother and faster.
Panelization isn’t a one-size-fits-all process. What works for a low-cost consumer PCB might fail for a thick power board or a medical-grade device.
By sending your PCB design files with DFM (Design for Manufacturing) questions early — even before finalizing the Gerber — your CM can suggest optimal panel size, tooling holes, and depaneling methods.
At Fumax, our engineers often send back annotated screenshots showing suggested fiducial placements, spacing adjustments, and breakaway tab positions — usually within 24 hours.
A well-planned panel saves time, reduces waste, and ensures your boards pass smoothly through every stage of production — from solder paste printing to AOI inspection.
Panelization might look like a mechanical detail, but it’s actually a core part of reliable, scalable manufacturing.
Before you hit “send” on your next PCB design, take a moment to think about your panel layout — or better yet, let your manufacturer review it first.
�� Learn more about our DFM support and PCB manufacturing process at www.fumax.com
