QS3.241
Q-Series
24V,
3.4A,
S
INGLE
P
HASE
I
NPUT
Jul. 2020 / Rev. 2.3 DS-QS3.241-EN
All parameters are specified at 24V, 3.4A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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10/26
9.
R
ELIABILITY
AC 100V
AC 120V
AC 230V
Lifetime expectancy
*)
48 000h
62 000h
79 000h
at 24V, 3.4A and 40°C
117 000h
126 000h
114 000h
at 24V, 1.7A and 40°C
137 000h*)
177 000h*)
224 000h*)
at 24V, 3.4A and 25°C
MTBF
**)
SN 29500, IEC 61709
1 191 000h
1 265 000h
1 451 000h
at 24V, 3.4A and 40°C
2 061 000h
2 155 000h
2 436 000h
at 24V, 3.4A and 25°C
MTBF
**)
MIL HDBK 217F
581 000h
631 000h
643 000h
at 24V, 3.4A and 40°C; Ground
Benign GB40
812 000h
889 000h
912 000h
at 24V, 3.4A and 25°C; Ground
Benign GB25
*) 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 400h). Any number exceeding this value is a calculated theoretical lifetime which can be used to compare devices.
**)
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.
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 can not be determined if the failed unit
has been running for 50 000h or only for 100h.
