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參數(shù)資料
| 型號： | BM2540-7PD3AHFU |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 50 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | 168.50 X 111.20 MM, 38.70 MM HEIGHT, METAL, CASE M02, MODULE |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 536K |
| 代理商： | BM2540-7PD3AHFU |
M-Family
DC-DC Converters <100 W
Rugged Environment
7 - 22
Edition 2/96 - Melcher AG
MELCHER
The Power Partners.
7.1
Option F Fuse not accessible
The standard M units have a fuseholder containing a 5
× 20
mm fuse which is externally accessible and to be found in
the back plate near the connector. Some applications re-
quire an inaccessible fuse. Option F provides a fuse
mounted directly onto the main PCB inside the case.
The full self-protecting functions of the module do normally
not lead to broken fuses, except as a result of inverse polar-
ity at the input of an A/B/C/D/FM or C/DMZ type or if a
power component inside fails (switching transistor, free-
wheeling diode, etc). In such cases the defective unit has to
be returned to Melcher for repair.
Option U UL Version
Underwriters Laboratories (UL) have approved the M se-
ries converters as recognized components up to an ambi-
ent temperature of
TA max – 15 K given by the upper tem-
perature limit of the standard PCB material. If the full maxi-
mum ambient temperature
TA max is required with UL ap-
proval, option U should be requested. It consists of an alter-
native PCB material with a higher maximum temperature
specification.
The European approval boards have in contrast accepted
the converters with the standard PCB material to be ope-
rated up to
TA max without any further precautions.
Immunity to Environmental Conditions
Table 22: Mechanical stress
Test Method
Standard
Test Conditions
Ca
Damp heat
DIN 40046 part
Temperature:
40 ±2
°C
steady state
IEC 68-2-3
Relative humidity:
93 +2/-3 %
MIL-STD-810D section 507.2
Duration:
56 days
Unit not operating
Ea
Shock
DIN 40046 part 7
Acceleration amplitude:
100 gn = 981 m/s2
(half-sinusoidal)
IEC 68-2-27
Bump duration:
6 ms
MIL-STD-810D section 516.3
Number of bumps:
18 (3 each direction)
Unit operating
Eb
Continuous shock
DIN 40046 part 26
Acceleration amplitude:
40 gn = 392 m/s2
(half-sinusoidal)
IEC 68-2-29
Bump duration:
6 ms
MIL-STD-810D section 516.3
Number of bumps:
6000 (1000 each direction)
Unit operating
Fc
Vibration
DIN 40046 part 8
Frequency (1 Oct/min):
10...2000 Hz
(sinusoidal)
IEC 68-2-6
Maximum vibration amplitude:
0.35 mm (10...60 Hz)
MIL-STD-810D section 514.3
Acceleration amplitude:
5 gn = 49 m/s2
Test duration:
7.5 h (2.5 h each axis)
Unit operating
Fda
Random vibration
DIN 40046 part 23
Acceleration spectral density:
0.05 g2/Hz
wide band
IEC 68-2-35
Frequency band:
20...500 Hz
reproducibility high
Acceleration magnitude:
4.9 grms
Test duration:
3 h (1 h each axis)
Unit not operating
Kb
Salt mist
DIN 40046 part 105
Concentration:
5% (30
°C)
cyclic
IEC 68-2-52
Duration:
2 h per cycle
(sodium chloride NaCl
Storage:
40
°C, 93% rel. humidity
solution)
Storage duration:
22 h per cycle
Number of cycles:
3
Unit not operating
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