MCPCB can be without solder mask
Yes, we can make the MCPCB without solder mask! How to do MCPCB without solder mask?
- First step, we use our dielectric layer and laminate with copper, so we get the material of this stack up
Top: copper foil
Middle: dielectric layer
Bottom: Aluminum or Copper or Iron substrate
- Second step, etch copper to get the trace, the areas without trace will expose the dielectric layer, the color of 1W/m.K & 2W/m.K raw material is white, 3W/m.K is light blue.
3 w m/k dielectric layer is light blue
2 w m/k dielectric layer is white
- Third step, do the surface finish, HAL-LF, OSP, ENIG, etc…，here you will kow for no Soldermask ,it have to do surface finishing for all circuits,so if you would like to protect parts of circuits layer and which don’t need do surface finishing.
MCPCB without solder mask have no bad influent the function of the board, so solder mask with or without, only depends on your requirement.please visit for metal core PCB if you would like to know more.
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Tags: MCPCB