Application Note
22
<Revision 2.4>
<<2019-06-17>>
Assembly Instructions for the Easy-PressFIT Modules
11
Clearance and creepage distances
When defining the layout of the PCB, application specific standards, mainly regarding clearance and creepage
distances, have to be considered. This is particularly important for the area of the screw clamp, which is located
under the PCB. In order to meet the respective requirements regarding clearance and creepage distances,
current-carrying devices or through-holes in this area should be avoided, or additional isolation measures like
lacquering must be taken.
Figure 20
Air path between clip and PCB for Easy1B and Easy2B packages
The minimum clearance distance between the screw and the PCB depends on the screw itself. For Easy1B and
Easy2B packages, the distance will be 6.8 mm with a hexagon socket head M4 screw according to DIN 912, a
washer according to DIN 125 and the clamp which can be seen in Figure 20. For Easy3B packages, the distance
will be 2.95 mm with a hexagon socket head M5 screw according to DIN 912, and an M5 washer according to DIN
125. A detailed drawing can be seen in Figure 21.
Figure 21
Air path between clip and PCB for Easy3B package
The clearance and creepage distances specified in the datasheet are minimum values irrespective of other
devices that would be mounted close to the module.
