日本語
****
For a new PCB, is right?
974
1
Dec 30.2019, 17:24:43
I just had these FR4 boards delivered a few days ago guys and to be honest they look like old stock perhaps to me. They have what looks like an exposed edge down one side which IMO doesn't seem correct? Its as if the photoresist has either not been applied evenly or perhaps the pcbs have been poorly stored or something.
As you can see the surfaces are different colours down one edge. The pics were taken as soon as the black protective film was removed in a dark'ish room. Surely this is not correct for new PCBs?
Many thanks for any advice.
- Comments(1)
Upload a photo:You can only upload 1 files in total. Each file cannot exceed 2MB.Supports JPG, JPEG, GIF, PNG, BMP
A****min
Jan 04.2020, 11:37:51
These are from the edges of a bigger plate, there is less photoresist on the edges
