PCB panelization is often treated as a minor manufacturing detail.
Something to be solved after layout is finished, or delegated entirely to the factory.
In practice, panelization decisions have a direct impact on:
• Assembly yield
• Mechanical stress on components
• Test efficiency
• Cost per unit
• Scalability to volume production
At Comtec Labs, panelization-related issues are a frequent root cause of unexpected delays and quality problems during NPI and ramp-up.
This article explains the key do’s and don’ts of PCB panelization,
and why panelization should be considered part of the design process—not an afterthought.
What PCB Panelization Really Is
Panelization is the process of grouping multiple PCB instances into a larger panel
that can be efficiently fabricated, assembled, tested, and depanelized.
A good panel design balances:
• Manufacturing efficiency
• Assembly stability
• Ease of depanelization
• Cost optimization
A poor panel design does the opposite.
Do: Consider Depanelization Method Early
How a board is separated from the panel matters.
Common depanelization methods include:
• V-scoring
• Tab routing with breakaway tabs
• Mouse bites
• Laser depanelization
Each method introduces different mechanical stresses. Sensitive components placed too close to break points are often damaged during depanelization.
Designing with depanelization in mind reduces rework and field failures.
Don’t: Assume the Factory Will Figure It Out
Factories can optimize panels—but only within the constraints you give them.
If panelization is left undefined:
• Tooling may be insufficient
• Fiducials may be poorly placed
• Assembly efficiency may suffer
Design ownership does not end at the PCB outline.
Good paneling supports the entire product lifecycle.
Ready to Reduce PCB Surprises?
If you’re navigating complex requirements, tight schedules, or production risk, Comtec Labs offers a full suite of services to streamline your workflow:
PCB design service
PCB prototyping service
PCB component sourcing
PCB component assembly
PCB testing service
PCB repair and modifications
Printed circuit board production
PCB mass production