6.1 Considerations for component placement and wiring pattern
■
Recommend not wire the high voltage line (AC and +BC voltage) on the surface of the primary
components side.
■
The distance between the pattern connected to AC and +BC must be separeted 3mm or more.
■
And the distance between primary elements (components and patterns) and secondary elements
must be separeted 8mm or more.
■
Figure 6.1. shows the creepage distance as reference.
■
Exterior of the electrolytic capacitor is considered as same potential as the negative terminal, it will
be included in the primary component. Please note the distance between secondary side
(including pattern) and exterior of the electrolytic capacitor.
■
However, the clearance and creepage distance varies depending on the usage condition and the
requirement of the safety standard, please confirm before the PCB design.
Fig.6.1
Creepage distance
■
Prohibited area of the wiring pattern and component placement is shown in Figure 6.2. (A), (B), (C).
Fig.6.2
Prohibited area of
arround power supply
A-14
3mm or more
8mm or more
2.1 Pin configuration
6.Board layout
(A) TUHS3/TUHS5
(B) TUHS10/TUHS15
(C) TUHS25
Inhibition area of pattern
and parts of the primary
Inhibition area of pattern
and parts of the secondary
Inhibition area of pattern
and parts of the primary
Inhibition area of pattern
and parts of the secondary
Inhibition area of pattern
and parts of the primary
Inhibition area of pattern
and parts of the secondary
Applications Manual
TUHS series
