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The standard PCB boader width

Author : Luwis Date : 2016-5-19 22:39:46
Edge of the PCB process flow, process the reserved for subsequent SMT processing is of great significance. Plug-in technology edge is in order to assist production be out of tune, welding peaks on both sides of the PCB board or sides increased, mainly in order to assist the production, is not part of the PCB board, after completion of the manufacture can go away. Leave process edge is the main reason of the SMT placement machine orbit is used to grip the PCB and flows through the placement machine, so too close to the tracks of components in the SMT placement machine suction nozzle absorbing components onto the PCB, and pasted on the hit a occur, unable to complete the production, a certain amount of process, so you must like 2 ~ 5 mm and so on. Likewise, can also be applied to some plug-in components, to prevent a similar phenomenon when after wave soldering.
 
Due to the technological edge will consume more PCB board, will increase the overall cost of PCB, so at the edge of the PCB design process, the need to balance economic and manufacturability. Aiming at some special shape of PCB, can skillfully through makeup, will leave two originally process edge or four simplified PCB plate on the side of the earth. In the design of the whole way, need to fully considering the track width, SMT placement machine for more than the width of 350 mm makeup must need communication with SMT process engineer of supplier.
 
PCB technology edge roughness is an important part of PCB production, this has wanted to be a great relationship with V - Cut. At the edge of the removal of PCB technology, the need to ensure that technological edge smooth, especially for PCB assembly accuracy high, any burrs uneven, lead to install hole deviation, for subsequent assembly to great trouble. 
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