Quote by Sales Team: send your gerber file to svc@pcbastore.com
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Why do I need to design Break-away Rails (Break-away Tabs) ?

PCBA Store / 2017-05-13

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If the clearance between the board’s edge and copper features is less than 3.5mm (138mil), or your boards need to be panelized for some reason, Break-away rails (Break-away tabs) must be added at the two longer paralleled edges of the boards to ensure that the boards can be assembled by the machine. This enables the boards can be processed by the SMT machine.