FAQ: Stencil Technology


The metal Stencil were made of refined steel according DIN 1.4301. There were Stencil with thicknesses of 100 μm, 120 μm, 130µm, 150 μm, 180 μm, 200 μm, 250 μm and 300 μm.

For manufacturing Stencils for self mounting systems we need once the type of the mounting system (manufacturer and type) a drawing of the perforated egde.

For positioning the Stencil on the PCB fiducials were needed. For our Stencils 4 fiducials are inclusive.

The fiducials could be manufactured in several ways. These are:

  • fiducial engraved: only a part of the surface will be removed
  • fiducial cut through: a breakthrough is made
  • fiducial black filled: a breakthrough is made and filled with a black lacquer


To extend the durability of your Stencils we offer you the following options:


Edge Protection (Only for SMD stencils for a self-tensioning frame system): 

For this the edges of the stencil are folded over. This minimizes the danger of injuries through sharp edges. The stability of the stencil is increased considerably.


Surface treatment: 

The cutting process forms at the pad openings and pad walls an oxide coating and to the laser withdrawal side a burr. The burr will be removed within a brushing process. With several polish procedures the surface of the Metal Stencil and the pad walls will be more smoothened. Thus cleaning of the Metal Stencil will be more easily and the release behavior of the solder paste is improved.

What is an ECO stencil?

The ECO Stencil is a favourable variety for developers and individuals to give here the possibility to us Metal Stencils.


  • Material: Refined Steel DIN 1.4301
  • Thicknesses: 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 250 μm
  • Size: 290 x 210 mm (maximum)
  • Stencil form: only rectangular form is supported
  • Pads: 1.000 Pads inclusive
  • Inscription: 25 Characters maximum 
  • No modifications on the data.

WEdirekt Technical Specifications