FPS300.245-049-102
All parameters are specified at 24 V, 12.5 A, 230 Vac, 25 °C ambient and after a 5 minutes run-in time unless otherwise noted.
Apr. 2022 / Rev. 0.2 FPS300-EN
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Lifetime Expectancy
The Lifetime expectancy shown in the table indicates the minimum operating hours (service life) and is determined by the
lifetime expectancy of the built-in electrolytic capacitors. Lifetime expectancy is specified in operational hours and is
calculated according to the capacitor’s manufacturer specification.
The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400 h). Any number
exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
1AC 100 V 1AC 120 V 1AC 230 V
Calculated lifetime expectancy
88 600 h
121 100 h
175 200 h
At 24V, 300 W and 40°C
257 900 h
319 790 h
410 500 h
At 24V, 150 W and 40°C
247 300 h
352 300 h
432 500 h
At 24V, 300 W and 25°C
530 100 h
610 800 h
834 400 h
At 24V, 150 W and 25°C
MTBF
MTBF stands for
M
ean
T
ime
B
etween
F
ailure, which is calculated according to statistical device failures, and indicates
reliability of a device. It is the statistical representation of the likelihood of a unit to fail and does not necessarily represent
the life of a product.
A MTBF figure of e.g. 1 000 000 h means that statistically one unit will fail every 100 hours if 10 000 units are installed in the
field. However, it can not be determined if the failed unit has been running for 50 000 h or only for 100 h.
For these types of units the MTTF (
M
ean
T
ime
T
o
F
ailure) value is the same value as the MTBF value.
1AC 100 V 1AC 120 V 1AC 230 V
MTBF SN 29500, IEC61709
270 000 h
305 000 h
384 000 h
At 24 V, 300 W and 40 °C
489 000 h
546 000 h
679 000 h
At 24 V, 300 W and 25 °C
MTBF MIL HDBK 217F
106 000 h
118 000 h
135 000 h
At 24 V, 300 W and 40 °C; Ground Benign GB40
160 000 h
175 000 h
195 000 h
At 24 V, 300 W and 25 °C; Ground Benign GB25
29 000 h
32 000 h
35 000 h
At 24 V, 300 W and 40 °C; Ground Fixed GF40
39 000 h
42 000 h
46 000 h
At 24 V, 300 W and 25 °C; Ground Fixed GF25
