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Circuit Board Panelization Methods: V-Scoring Vs Tab Routing


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When it comes to panelization methods for circuit boards, there are several options to consider, with V-scoring and tab routing being the primary contenders. Each method has its own set of advantages and disadvantages, making it important to choose the right one for your specific needs.



V-scoring offers several benefits, particularly in terms of panel utilization. Unlike tab routing, V-scoring doesn't require spacing between small units, resulting in better panel utilization overall. However, it's worth noting that V-scoring is only suitable for rectangular-shaped boards. Additionally, while V-scoring provides a clean separation between units, there may be some burrs along the board edge after separation.

Tab Routing:

PCB Tab Routing

Tab routing is a versatile method that can be applied to boards of all shapes and sizes. Unlike V-scoring, which is limited to rectangular boards, tab routing offers more flexibility in terms of board shape. Additionally, tab routing produces a very smooth board edge, with minimal burring, except at the connection points. However, it's important to consider that tab routing may require a certain width of the routing bit, which can impact panel utilization.

Considerations for Panel Dimensions:

When determining the ideal panel dimensions, it's important to keep in mind the limitations of each panelization method. For V-scoring, the panel size should not exceed the capabilities of the PCB supplier, as larger panels may not be compatible with V-scoring. Additionally, when using V-cut methods, there may be some burrs along the edges, particularly with larger panels.

In conclusion, both V-scoring and tab routing offer distinct advantages and disadvantages when it comes to circuit board panelization. The choice between the two methods will ultimately depend on factors such as panel utilization, board shape, and desired edge quality. By carefully considering these factors, you can choose the panelization method that best suits your specific requirements.

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