Hello, in PCB i have two layer that i have trouble to visualize what they are?
TOP PASTE and TOP mask, i have trouble to visualize them on the board.
I tried to look at the manual below however i dont have a good visual example.
Thanks.

https://www.allpcb.com/soldermask/solder_mask_paste_mask.html

 

Don't know what more to say. The solder mask is a coating applied to the board to protect the copper. If you want to stick components onto the copper, there need to be openings in the solder mask to let you do that. This is what the solder mask layer is for -- you are saying where you want there to NOT be a solder mask on the board.

For surface mount components, you usually lay down a layer of solder paste on the pads, then stick the components to the paste and heat up the board enough to melt the solder paste. You have to indicate where you want solder paste applied to the board. That's what the solder paste mask is for.

 

Two points to note:
.● If you look at the soldermask layer Gerber file, it's shown in reverse – the dark areas are holes in the soldermask, where component pads will be exposed for soldering. With rare exceptions, the soldermask layer is generated automatically by the PCB layout software

● The solder paste layer is generated automatically by the PCB layout software – no extra steps are required to create it. The PCB fab house may alter it to ensure the proper amount of solder is applied to each pad.

The solder paste file is used to create a solder paste stencil, which is used to spead solderpaste on the circuit board for automated assembly.

 

Hello ,So if i understand correctly solder mask is the coating aplied on top the whole PCB?

and solder paste is the places of the pads where we put the solder on top of the pads?
Thanks.

 

Yes correct

 

Hello, In Altium i have different names , top overlay and top solder.
What is the solder paste and soldr mask layers ?
Thank.

 

Top overlay is also known as silk screening which is the white printed device identifications.

 

Hello Mr.chips , what is Top Solder layer?
Thanks.

Top overlay is also known as silk screening which is the white printed device identifications.

 

Top solder is the solder mask.

 

Top solder paste ist not shown in the Layer stack manager because it is not part of the layer stack of the PCB.