!
Caution
7. Vibration and Shock
1. Please confirm the kind of vibration and/or shock, its
condition, and any generation of resonance.
Please mount the capacitor so as not to generate
resonance, and do not allow any impact on the terminals.
2. Mechanical shock due to being dropped may cause
damage or a crack in the dielectric material of the
capacitor.
Do not use a dropped capacitor because the quality and
reliability may be deteriorated.
3. When printed circuit boards are piled up or handled, the
corner of another printed circuit board should not be
allowed to hit the capacitor, in order to avoid a crack or
other damage to the capacitor.
Floor
Crack
Crack
Mounting printed circuit board
Soldering and Mounting
1. Confirm the best mounting position and direction that
minimizes the stress imposed on the capacitor during
flexing or bending the printed circuit board.
1-1. Choose a mounting position that minimizes the
stress imposed on the chip during flexing or bending
of the board.
<Applicable to NFM Series>
2. If you mount the capacitor near components that
generate heat, take note of the heat from the other
components and carefully check the self-heating of the
capacitor before using.
If there is significant heat radiation from other
components, it could lower the insulation resistance of
the capacitor or produce excessive heat.
1. Mounting Position
Locate chip
horizontal to
the direction in
which stress
acts.
It is effective to implement the following measures, to reduce stress
in separating the board.
It is best to implement all of the following three measures; however,
implement as many measures as possible to reduce stress.
[Component Direction]
[Chip Mounting Close to Board Separation Point]
When a capacitor is mounted near a screw hole, it may be affected
by the board deflection that occurs during the tightening of the
screw. Mount the capacitor in a position as far away from the
screw holes as possible.
[Mounting Capacitors Near Screw Holes]
A
B
D
C
Perforation
(Bad Example)
(Good Example)
Slit
Contents of Measures
Stress Level
A > B
(2) Add slits in the board separation part.
A > D *1
(1) Turn the mounting direction of the component
parallel to the board separation surface.
A > C
(3) Keep the mounting position of the component
away from the board separation surface.
Screw Hole
Recommended
A > D is valid when stress is added vertically to the perforation as with
Hand Separation.
If a Cutting Disc is used, stress will be diagonal to the PCB, therefore
A > D is invalid.
*1
Continued from the preceding page.
Continued on the following page.
!
Note
• Please read rating and
!
CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
