As I stated previously early boards often had the HASL done before the solder mask was added, this could cause problems as illustrated by this quote from the IPC CID course notes....Non-functional metal areas on a surface to be electroplated. Their purpose is to balance the current density during plating to ensure uniform build-up of plated material
Solder mask may not adhere properly to melting metal surfaces (solder coating, tin/lead plating).
Adhesion is compromised because boards are subjected to temperatures that cause redistribution of
the melting metals. The maximum recommended conductor width, where the coating completely
covers the conductor, shall be 1.3 mm [0.051 in]. If covered conductors of melting metal are larger
than 1.3 mm [0.051 in] wide, there shall be a relief (cross-hatching) through the metal to the base
The relief should be at least 2.54 mm square [0.010 square inch] in size and located on a grid no
greater than 6.35 mm [0.250 in]. When conductor areas of melting metal are to be left uncovered,
the design for all class boards shall provide that the solder resist shall not overlap the melting metal
by more than 1.0 mm [0.039 in].
What you are quoting has absolutely nothing to do with the situation at hand. What you quote says that solder-plated conductors need to be cross-hatched to allow proper soldermask adhesion. What we're talking about is thieving on the opposite side of the board.Nope.... Wrong
Plating thieves are areas of non functional copper added to a design to even out current distribution.
As I stated previously early boards often had the HASL done before the solder mask was added, this could cause problems as illustrated by this quote from the IPC CID course notes....
The strong possibility is that this was done for the above reason.....
Does anyone know what these solder dashes are for on the PCB power traces.
Sorry mate you are talking rubbish, where is there any thieving on the board.....
So yes what I am saying has everything to do with the design
the original post...
Here is another link on thieving I would suggest you have a look at it...
PCBs, assisting natural selection!show the high voltage traces and allows for easier electrocution when you accidently grab the board.....:lol: