20
21
-1
1
20
Power Supply PS1000-A6-48.5
MTBF
13
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.
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.
AC 100V
AC 120V
AC 230V
MTBF SN 29500, IEC 61709
506 000h
523 000h
699 000h
At 48V, 5.4A and 40°C
897 000h
923 000h
1 201 000h
At 48V, 5.4A and 25°C
MTBF MIL HDBK 217F
223 000h
224 000h
248 000h
At 48V, 5.4A and 40°C;
Ground Benign GB40
303 000h
303 000h
339 000h
At 48V, 5.4A and 25°C;
Ground Benign GB25
50 000h
51 000h
58 000h
At 48V, 5.4A and 40°C;
Ground Fixed GF40
65 000h
65 000h
74 000h
At 48V, 5.4A and 25°C;
Ground Fixed GF25
