PIM90.245
Feb. 2022 / Rev. 2.0 DS-PIM90.245-EN
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All parameters are specified at 24V, 3.8A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
9.
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.
Please note: The manufacturer of the electrolytic capacitors only guarantees a maximum life of up to 15 years (131 400h).
Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
AC 100V
AC 120V
AC 230V
Lifetime expectancy
39 000h
64 000h
102 000h
At 24V, 3.8A and 40°C
260 000h
292 000h
309 000h
At 24V, 1.9A and 40°C
91 000h
147 000h
287 000h
At 24V, 3.8A and 25°C
640 000h
720 000h
815 000h
At 24V, 1.9A and 25°C
10. MTBF
MTBF stands for Mean Time Between Failure, 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.
The MTBF figure is a statistical representation of the likelihood of a device to fail. A MTBF figure of e.g. 1 000 000h means
that statistically one unit will fail every 100 hours if 10 000 units are installed in the field. However, it cannot be determined
if the failed unit has been running for 50 000h or only for 100h.
For these types of units the MTTF (Mean Time To Failure) value is the same value as the MTBF value.
AC 100V
AC 120V
AC 230V
MTBF SN 29500, IEC 61709
1 174 000h
1 273 000h
1 507 000h
At 24V, 3.8A and 40°C
2 251 000h
2 406 000h
2 752 000h
At 24V, 3.8A and 25°C
MTBF MIL HDBK 217F
751 000h
760 000h
698 000h
At 24V, 3.8A and 40°C; Ground Benign GB40
1 085 000h
1 099 000h
1 018 000h
At 24V, 3.8A and 25°C; Ground Benign GB25
219 000h
224 000h
220 000h
At 24V, 3.8A and 40°C; Ground Fixed GF40
288 000h
294 000h
293 000h
At 24V, 3.8A and 25°C; Ground Fixed GF25
