Cassette Style
100 Watt AC-DC Converters
S Series PFC
Edition 01/01.2001
17/27
Table 11: MTBF
Values at Speci
fi
ed
Case Temperature
Type
Ground Benign
40
°
C
Ground Fixed
40
°
C
Ground Mobile
50
°
C
Unit
70
°
C
MTBF
1
LS 4000/5000
514'000
88'000
38'000
35'000
h
1
Calcualted in accordance with MIL-HDBK217F.
Table 10: Temperature speci
fi
cations, values given are for an air pressure of 800...1200 hPa (800...1200 mbar)
Temperature
Characteristics
T
A
Ambient temperature
T
C
Case temperature
T
S
Storage temperature
Standard -7
Option -9
Conditions
U
...U
i max
I
o
= 0...I
o nom
min
–
25
–
25
–
40
max
71
95
100
min
–
40
–
40
–
55
max
71
95
100
Unit
°
C
Not operational
Immunity to Environmental Conditions
Table 9: Environment specifications
Test method
Standard
Test conditions
Status
Ca
Damp heat
steady state
IEC/DIN IEC 60068-2-3
MIL-STD-810D section 507.2
Temperature:
Relative humidity:
Duration:
40
±
2
°
C
93
+2/-3
%
56 days
Unit not
operating
Ea
Shock
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-27
MIL-STD-810D section 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
100 g
n
= 981 m/s
2
6 ms
18 (3 each direction)
Unit
operating
Eb
Bump
(half-sinusoidal)
IEC/EN/DIN EN 60068-2-29
MIL-STD-810D section 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
40 g
n
= 392 m/s
2
6 ms
6000 (1000 each direction)
Unit
operating
Fc
Vibration
(sinusoidal)
IEC/EN/DIN EN 60068-2-6
Acceleration amplitude:
0.35 mm (10...60 Hz)
5 g
n
= 49 m/s
2
(60...2000 Hz)
10...2000 Hz
7.5 h (2.5 h each axis)
Unit
operating
Frequency (1 Oct/min):
Test duration:
Fn
Vibration
broad band
random
(digital dontrol)
IEC 60068-2-64
DIN 40046 part 23
MIL-STD-810D section 514.3
Acceleration spectral density: 0.05 g
n2
/Hz
Frequency band:
Acceleration magnitude:
Test duration:
Unit
operating
5...500 Hz
4.97 g
n rms
3 h (1 h each axis)
Kb
Salt mist, cyclic
(sodium chloride
NaCl solution)
IEC/EN/DIN IEC 60068-2-52
Concentration:
Duration:
Storage:
Storage duration:
Number of cycles:
5% (30
°
C)
2 h per cycle
40
°
C, 93% rel. humidity
22 h per cycle
3
Unit not
operating