Mechanical and electrical tolerances
Contour tolerances:
Hole tolerances:
Electrical tolerance
Tolerance for scoring cut (V-cut)
If you have scoring on the outline of the printed circuit board, the following tolerances apply:
Only the outer layers need to be covered with solder mask, the inner copper layers are protected by the adjacent substrate layers. The tolerances Mechanical soldering mask soldermask is made of a fluid substance like an ink and is applied in a thin layer similar to varnish on the entire
In a multi-layer board, an internal layer may be mostly solid copper to act as a ground plane for shielding and power return. For microwave printed circuits, transmission lines can be laid out in a planar form, such tolerances Mechanical as stripline or microstrip, with dimensions carefully controlled to ensure
are used for: fixing the electronic components in designated locations on the outer layers Mechanical tolerances by gluing. provides reliable electrical connections between the component terminals in a controlled manner according to a predetermined scheme. Printed circuits are widely used in many fields: Consumer goods Military Aerospace Industrial Medical Naval The
