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參數(shù)資料
| 型號： | LT1740-7DB1 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 550 W AC-DC REG PWR SUPPLY MODULE |
| 封裝： | CASE T01, MODULE |
| 文件頁數(shù)： | 19/33頁 |
| 文件大小： | 838K |
| 代理商： | LT1740-7DB1 |
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T Series
AC-DC Converters >100 Watt
Rugged Environment
Edition 4/4.99
26/33
MELCHER
The Power Partners.
Table 19: Temperature specifications
Temperature
–7
Characteristic
Conditions
min
typ
max
Unit
TA
Ambient operational
Io = 0...Io nom
–25
71
°C
temperature range
Io > Io nom
–25
65
Temperature range
limited by
Ucr range
for battery charging
TC
Case operational
Io = 0...Io nom
–25
95
temperature range
Io > Io nom
–25
90
at measurement point
(see:
Mechanical Data)
TS
Storage temperature
–40
100
range (not operating)
TCs
Shut down
100
case temperature
Rth CA Thermal resistance
convection
0.5
K/W
case to ambient
cooling
τ
C
Thermal time constant
1
h
of case
Table 20: MTBF
Values at specified
Module types
Ground benign
Ground fixed
Ground mobile
Unit
case temperature
40
°C40°C70°C50°C
MTBF 1
LT 1701-7
198'000
56'000
26'000
20'000
h
Device hours 2
810'000
1 Calculated in accordance with MIL-HDBK-217E (calculation according to edition F would show even better results)
2 Statistical values, based on an average of 4300 working hours per year and in general field use, over 3 years
Immunity to Environmental Conditions
Table 18: Mechanical stress
Test method
Standard
Test conditions
Status
Ca
Damp heat
IEC/DIN IEC 60068-2-3
Temperature:
40 ±2
°C
Unit not
steady state
Relative humidity:
93 +2/-3 %
operating
Duration:
56 days
Ea
Shock
IEC/EN/DIN EN 60068-2-27
Acceleration amplitude:
100 gn = 981 m/s2
Unit
(half-sinusoidal)
Bump duration:
6 ms
operating
Number of bumps:
18 (3 each direction)
Eb
Bump
IEC/EN/DIN EN 60068-2-29
Acceleration amplitude:
40 gn = 392 m/s2
Unit
(half-sinusoidal)
Bump duration:
6 ms
operating
Number of bumps:
6000 (1000 each direction)
Fc
Vibration
IEC/EN/DIN EN 60068-2-6
Acceleration amplitude:
0.21 mm (10...60 Hz)
Unit
(sinusoidal)
3 gn = 29.4 m/s2 (60...2000 Hz) operating
Frequency (1 Oct/min):
10...2000 Hz
Test duration:
7.5 h (2.5 h each axis)
Fda
Random vibration
IEC 60068-2-35
Acceleration spectral density: 0.05 gn rms
Unit
wide band
DIN 40046 part 23
Frequency band:
20...500 Hz
operating
Reproducibility
Acceleration magnitude:
4.9 gn rms
high
Test duration:
3 h (1 h each axis)
Kb
Salt mist, cyclic
IEC/EN/DIN IEC 60068-2-52
Concentration:
5% (30
°C)
Unit not
(sodium chloride
Duration:
2 h per cycle
operating
NaCl solution)
Storage:
40
°C, 93% rel. humidity
Storage duration:
22 h per cycle
Number of cycles:
3
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