Application Note
3
<Revision 2.4>
<<2019-06-17>>
Assembly Instructions for the Easy-PressFIT Modules
1.1
General information on power module handling
This section describes forces on module housing – DCB push-out
The power module is not designed to withstand forces on the module housing as shown in the example of
Figure 3. The module pins are located here on a flat table. Forces on the module housing (Fp) are pushing the
DCB out of the housing. Therefore, forces (Fp) on the module housing have to be avoided during handling.
Please note that this is a different case compared to the normal press-in process, where the DCB is fully
supported in the press-tool, and the press-in forces affect the DCB, and not the housing.
Figure 3
Forces on the housing during module handling should be avoided to prevent a push-out of the
DCB
Some modules will have quite low DCB push-out forces (Fp), the minimum value of which is not a confirmed
property of the power module. This is not critical for real applications, because the housing is fixed later on the
cooling system by the integrated clamps. Thus, the housing cannot move in a critical way. Furthermore, the
“sealing rope” between the module frame and the DCB only serves to seal the module when the isolating gel is
filled during our production process. After the filling process, the liquid gel is heated and becomes soft but
solid. The sealing has no gluing function in the final product.
