Seeed Studio PCB resolution test
Matseng added some test patterns to his latest batch of PCBs to stress the limits of Seeed Studio’s PCB service. Seeed advertises 6mil/6mil in their specification, so Mats added concentric circles in 6mil trace/6mil space, 5/5, 4/4 ,3/3, and 2/2 sizes.
As can be seen on the picture above even 3/3 mil seems almost perfect as long as it’s covered by soldermask. The HASL doesn’t work too well even at 6/6 when there’s no soldermask between the tracks. I suppose that ENIG (gold) would be ok at 3/3, but that test will have to wait for a later time.
Check out the hi-res pictures in the forum. Later this month we’ll be visiting the PCB fabrication plant Seeed uses, and we’ll bring you the inside look at their operation.This entry was posted in #liveupdates.