Application Note
6
<Revision 2.4>
<<2019-06-17>>
Assembly Instructions for the Easy-PressFIT Modules
3
The press-in process
This section deals with the necessary press-in forces and tools for the modules.
The PressFIT module is inserted in a PCB by pressing it in. PressFIT can be performed using a toggle lever press
or a machine. A press-in tool that records the necessary force and the travel distance is recommended.
Consistent quality and reproducability is assured in this way. The PressFIT speed should not be lower than 25
mm/min according to IEC 60352-5. A lower PressFIT speed can lead to increased press-in forces and to
deformation of the pins, or a non gas-tight connection.
Note that during the press-in process, the placement area of the PCB and the pressing area of the pressure
plate must be parallel to each other. The pressure plate should be mechanically fixed in position without any
tolerance. The module is then pressed into the PCB in a regular motion.
The module pins should penetrate the PCB during press-in until the four stand-offs on the module, or optional
distance keepers as described in
Multi-module and automotive application,
make contact with the board.
By adhering to the principles stated above, a smooth insertion process for the two components can be
achieved.
The following illustrations show the press-in process as it is implemented in the laboratory.
Figure 5
Press-in process of an Easy module
Attention! It is recommended to protect the underside of the IGBT module against damage during the press-
fitting process.
3.1
Press-in tools
The following tools that help pressing the modules in and out are recommended for the three Easy B Series
modules. Figure 6 shows these pressing tools for the two housing types, Easy 1B and Easy 2B. The pressing
tools for Easy3B housing are shown in Figure 7.
