Is it posible to make a board at cheap manufacturer suitable to 0.8mm pitch BGA

[Miyuki]

Hello
I want to ask if someone have an experience with trying to put 0.8mm pitch BGA on pcb from any cheap Chinese manufacturer with 6/6 mil routes and 0.3mm drill
I can easy route 1mm pitch BGA on this specs, but as all RAM chips are at 0.8mm pitch I cant route track between pads and via will too big
Is here any other solution than to put via in pad and try luck ?
Any real experience or advice than use better manufacturing process ?

[wraper]

PCBWIN has 5/5mil and 0.25mm hole by default. Edit, though, price wise they shine when you are making a larger order. For a few proto PCBs, they are not the cheapest. Still 5/5 mil from them is significantly cheaper that the same from PCBway even at low quantities.

[Miyuki]

As I need just one piece PCBWIN price is huge 

[jc101]

Have you looked at Eurocircuits?

If you're using Eagle you can just upload the .brd file to get a price.

[nctnico]

Hello
I want to ask if someone have an experience with trying to put 0.8mm pitch BGA on pcb from any cheap Chinese manufacturer with 6/6 mil routes and 0.3mm drill
I can easy route 1mm pitch BGA on this specs, but as all RAM chips are at 0.8mm pitch I cant route track between pads and via will too big
Is here any other solution than to put via in pad and try luck ?

Optimise the connections to the memory in a way you don't need vias even if it means placing the memory further away. This may take a couple of hours of trying various part orientations but IMHO it is well worth it. On dense boards vias are always huge obstacles.