186 CPNT
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Revision: 22-Sep-17
7
Document Number: 28435
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USEFUL LIFE AND ENDURANCE
Table 7
Note
(1)
Identical with endurance for this series
Endurance can be calculated by formula below:
L: estimated lifetime (h)
L
Tmax.
: base lifetime specified at maximum operating temperature with applied DC voltage (h)
T
max.
: rated maximum operating temperature (°C)
T
a
: actual ambient temperature (°C)
Table 8
Table 9
Statements about product lifetime are based on calculations and internal testing. They should only be interpreted as estimations. Also due to external factors, the
lifetime in the field application may deviate from the calculated lifetime. In general, nothing stated herein shall be construed as a guarantee of durability.
ENDURANCE TEST AND USEFUL LIFE
SERIES CASE CODE
USEFUL LIFE
AT 125 °C (h)
(1)
ENDURANCE
AT 125 °C (h)
ENDURANCE
AT 105 °C (h)
ENDURANCE
AT 85 °C (h)
ENDURANCE
AT 75 °C (h)
ENDURANCE
AT 65 °C (h)
186 CPNT 0606 to 1012 2000 2000 20 000 200 000 630 000 2 000 000
MULTIPLIER OF RIPPLE CURRENT (I
R
) AS A FUNCTION OF FREQUENCY
FREQUENCY (Hz)
120 1000 10 000 100 000
I
R
MULTIPLIER
0.05 0.3 0.7 1
TEST PROCEDURES AND REQUIREMENTS
TEST
PROCEDURE
(quick reference)
REQUIREMENTS
NAME OF TEST REFERENCE
Mounting IEC 60384-25,
subclause 4.3
Shall be performed prior to tests mentioned below;
reflow soldering;
for maximum temperature load
refer to chapter “Mounting”
C/C: ± 5 %
tan spec. limit
I
L2
spec. limit
Endurance IEC 60384-25 /
CECC 32300,
subclause 4.15
T
amb
= 125 °C; U
R
applied;
for test duration see Table 7
C/C: ± 20 %
tan 1.5 x spec. limit
I
L2
spec. limit
ESR 1.5 x spec. limit
Useful life CECC 30301,
subclause 1.8.1
T
amb
= 125 °C; U
R
and I
R
applied;
for test duration see Table 7
C/C: ± 20 %
tan 1.5 x spec. limit
I
L2
spec. limit
ESR 1.5 x spec. limit
Shelf life
(storage at high
temperature)
IEC 60384-25 /
CECC 32300,
subclause 4.16
T
amb
= 125 °C; no voltage applied;
1000 h
after test: U
R
to be applied for 30 min,
24 h to 48 h before measurement
For requirements
see “Endurance test” above
LL
Tmax.
x 10
T
max.
- T
a
20
-------------------------
=
