
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
9.0 Vdc - 18 Vdc Input
5 Vdc - 12 Vdc/1A Output
Non-Isolated
Low Profile Package
High Efficiency
Remote On/Off
Fixed Frequency (450kHz)
UL60950-1 Recognized (UL/cUL)
Active Low/High
Description
The Bel xRAH-01Kxxx is a part of the low cost non-isolated dc/dc converter Power Module series. The modules
use a SMD or SIP package for ease of layout and space savings. The output is closely regulated and the
efficiency of 9 Vdc output module is typically 86% at full load.
Part Selection
Output
Voltage
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
5 V
9 V - 18 V
1 A
5 W
81%
SRAH-01K50x
VRAH-01K50x
9 V
9 V - 18 V
1 A
9 W
86%
SRAH-01K90x
VRAH-01K90x
12 V
9 V - 18 V
1 A
12 W
87%
SRAH-01KX2x
VRAH-01KX2x
Notes: 1. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel
Packaging”, and “G” for “Tray Packaging”.
2. Use "0" to replace "x" in the above part number to indicate Active High, and "L" to indicate Active Low.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
24 V
Remote On/Off
-0.3 V
-
24 V
Ambient Temperature
-40
°C
-
85
°C
Storage Temperature
-40
°C
-
125
°C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
9 V
-
18 V
Remote Off Input Current
-
18 mA
25 mA
Input Current (no load)
-
30 mA
45 mA
Input Current (full load)
Vo=5 V
Vo=9 V
Vo=12 V
-
0.8 A
1.3 A
1.8 A
Input Reflected Ripple Current (pk-pk)
Vo=5 V
Vo=9 V
Vo=12 V
-
55 mA
75 mA
95 mA
80 mA
110 mA
130 mA
Input Reflected Ripple Current (rms)
Vo=5 V
Vo=9 V
Vo=12 V
-
15 mA
20 mA
30 mA
25 mA
30 mA
40 mA
With simulated source impedance of
500 nH, 5 Hz to 20 MHz; Use one 100
uF/25 V tantalum capacitor at the input.
I
2t Inrush Current Transient
-
0.003 A
2s
0.01 A
2s
Turn-on Voltage Threshold
8.0 V
8.5 V
8.8 V
Turn-off Voltage Threshold
7.2 V
7.6 V
8.2 V
Note: All specifications are typical at 25
°C unless otherwise stated.
xRAH-01K Series
RoHS Compliant
Rev.A
NOT
FOR
NEW
DESIGNS