Abstract A method for applying solder to printed wiring boards includes producing a printed wiring board with electrically conductive regions. Soldering paste is applied as a solder deposit on the electrically conductive regions. The solder deposits are melted to form hump-shaped solid solder applications joined to the printed wiring board. The hump-shaped solder applications are levelled out by areally applying pressure to the solder applications in the direction of the printed wiring board. A printed wiring board to which solder has been applied includes a wiring board surface having regions to be equipped with components according to an SMD process. Solder applications are disposed on the regions in the form of a solid solder layer. The solid solder layer has a pressed or rolled surface extended substantially parallel to the wiring board surface.
A printed wiring board to which solder has been applied, comprising a wiring board surface having metalized regions to be soldered with SMD components, solder applications in the form of a solid solder hump formed of molten soldering paste disposed on and covering said regions, and non-moistening partitions in the form of a dry film solder stop mask having a mask surface at a given height and separating adjacent ones of said solid solder humps from one another, said solid solder humps having a surface extended substantially parallel to said wiring board surface substantially to said given height of said mask surface, and said dry film solder stop mask forming a spacer for the SMD components and defining a soldering gap between said metalized regions and the SMD components to be soldered thereto.
Claim 2
Dependent Claim
133 words
A printed wiring board to which solder has been applied, comprising a wiring board surface having metalized regions to be soldered with SMD components, solder applications in the form of a solid solder hump formed of molten soldering paste disposed on and covering said regions, and non-moistening partitions in the form of a dry film solder stop mask having a mask surface at a given height and separating adjacent ones of said solid solder humps from one another, said solid solder humps having a surface extended substantially parallel to said wiring board surface substantially to said given height of said mask surface, and said dry film solder stop mask forming a spacer for the SMD components and defining a soldering gap between said metalized regions and the SMD components to be soldered thereto.