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Panel Requirements for PCB Assembly

PCB panel refers to put several small PCBs into a large board for production. It is easy to separate the multiple PCBs and avoid damaging the boards in the process of the panel assembly. And the panel types are determined according to the shape of the single board.

18 Panel requirements for assembly(配图完成)18-1.jpg

Why need panel design when manufacturing PCBs?

· Improving fabrication efficiency

Some PCBs are too small to meet the requirements of SMT fixtures, put them into a large board is more convenient for manufacturing. And the SMT process of multiple PCBs can be run at the same time in automatic machines, then increase the utilization rate of machines.


· Good quality control

Automated production is conducive to quality control and improves the yield of fabrication.


· Reducing PCB assembly cost

Panel design is more suitable for automatic production line, which can save labor costs. And it helps to use the PCB area effectively and reduce materials waste by panel design for some different shaped PCBs.

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Panel types of PCB assembly

· V-Scoring

V-scoring also called as V-cut or V-groove, it is the most popular panel type nowadays. The V-shape line between each board is a connection of each board in the panel and easy to break. The space between each PCB usually can be 0.0mm or 0.3mm with V-Scoring techniques, and the recommended V-cut angle is 30°.

V-cut is suitable for the regular panel design, and the cut line should be horizontal and vertical lines. For this panel type, the minimum size of the boards should be 75mm*75mm.

18 Panel requirements for assembly(配图完成)18-2.jpg

· Routing slot/milling slot +Tab (Tab-routing)

Routing slot includes two types:

--Tab-routing with breaking holes (stamp holes)

This panel type also named as stamp holes and is usually used in the special-shaped PCBs, like round-shaped boards.

The space between each PCB for this panel type should be 1.6mm; the hole spacing is generally greater than 0.25mm, and the hole diameter should be greater than 0.45mm.

18 Panel requirements for assembly(配图完成)18-3.jpg

--Tab-routing without holes

The width of the tab should at least be 2.0mm.

18 Panel requirements for assembly(配图完成)18-4.jpg

· Both V-Scoring & Tab-Routing

Both V-scoring and tab-routing techniques can be used on a single board, as shown in the following picture. The board space should be greater than 2.0mm between each unit. Usually, the space of the V-scoring area should be 3.0mm, and the tab routing area should be 1.6mm.

18 Panel requirements for assembly(配图完成)18-5.jpg

Other specifications in panel

For each panel, there need at least three fiducial marks, and the diameter should be 1.0mm. Usually, the tooling holes should be set to 2.0mm, and the minimum tooling strip width is 5.0mm. Please contact us if you need more panel design tips.

18 Panel requirements for assembly(配图完成)18-6.jpg

Panel service in APOLLOPCB

PCB assembly panel with a minimum size of 75mm*75mm and a maximum size of 600mm* 500mm can be produced in APOLLOPCB. You can choose one of these board types when you run an online quote on our website: single piece, panel by customers, and panel by APOLLOPCB. If you have any idea about the panel design of your order, please contact our online service or send E-mails to info@apollopcb.com.


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