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PCB density routing grids

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skywalker

skywalker

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pcb density

Can someone know or suggest right routing grids for routing 0.65mm and 0.5mm pitch smd components, also know via hole diameter for this components.

With a 1.27mm pitch no problem for routing with 8mils trace and 5mil grid, but at the low picht, wich routing strategy are best, especially in dense board ?

Please reply, skywalker.
 

pcb grids

i suggest to go for a grid less routing


binu g
 

Hi binu G,
ok for routing with grid less, it's only routing way.

But it's not possible to route trough pins, because 0.65mm and 0.5mm pitch are very small.

Wich via dimensions are suggest in this case ?

Thx binu G, skywalker.
 

you can use a via with 26/12 or 24/12

regards
binu g
 

Ask your board shop for there rules
english units at my shop are line/space 5/5mil
drill >= 10mil, pad_outer-layer >=24mil
Then use (these) as your grid.

Hope this helps
 

Hello, thanks for reply.

good info, skywalker.
 

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