< Dual-In-Line Package Intelligent Power Module >
Series Application note
Publication Date: September 2016
26
2.4 Mounting Method
This section are described the electric spacing and mounting precautions of .
2.4.1 Electric Spacing of
The electric spacing specification of is shown in Table 2-4-1.
Table 2-4-1 Minimum insulation distance(minimum value)
Clearance(mm)
Creepage(mm)
Between power terminals
5.8
Between power terminals
6.0
Between control terminals
2.5
Between control terminals
6.4
Between terminals and heat sink
2.5
Between terminals and heat sink
4.3
2.4.2 Mounting Method and Precautions
When installing the module to the heat sink, excessive or uneven fastening force might apply stress to inside
chips. Then it will lead to a broken or degradation of the chips or insulation structure. The recommended fastening
procedure is shown in Fig.2-4-1. When fastening, it is necessary to use the torque wrench and fasten up to the
specified torque. And pay attention not to have any foreign particle on the contact surface between the module
and the heat sink. Even if the fixing of heatsink was done by proper procedure and condition, there is a possibility
of damaging the package because of tightening by unexpected excessive torque or tucking particle. For ensuring
safety it is recommended to conduct the confirmation test (e.g. insulation inspection) on the final product after
fixing the DIPIPM with the heatsink.
Fig.2-4-1 Recommended screw fastening order
Temporary fastening
(1)
→
(
2)
Permanent fastening
(1)
→
(
2)
Note:
Generally, the temporary fastening torque is set to
20-30% of the maximum torque rating.
Not care the order of fastening (1) or (2), but need to
fasten alternately.
(1)
(2)
