ISOLATED DC/DC CONVERTERS
18 Vdc - 75 Vdc Input, 12 Vdc/3.5 A Output
Apr. 19, 2011
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
0RSB-40U12B RoHS Compliant PRELIMINARY Rev.A
Features
Isolated
Output Over-voltage Shut Down
Over Temperature Protection
OCP/SCP
High Efficiency
Fixed Frequency
High Power Density
Low Cost
Remote ON/OFF
Positive/Negative Remote Sense
Basic Insulation
Input Under-voltage Lockout
Output Voltage Trim
Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592)
Applications
Networking
Computers and peripherals
Telecommunications
Description
The 0RSB-40U12B series is isolated dc/dc converter that operates from a nominal 24 Vdc or 48 Vdc source.
These units will provide up to 42 W of output power from an 18 - 75 Vdc wide input range. These units are
designed to be highly efficient and low cost. Features include remote on/off, over current protection and under
voltage lockout. These converters are provided in an industry standard sixteenth brick package.
Part Selection
Output Voltage
Input Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
12 Vdc
18 Vdc - 75 Vdc
3.5 A
42 W
85%
0RSB-40U12B
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
0 R SB – 40 U 12 B
1
2
3
4
5
6
7
1---Through hole mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name, 1/16 Brick
4---Series code
5---Input range (18-75V)
6---Output voltage (12V)
7---Option, “x” of the model part number to be 0-9, A-Z, which will represent the special request of
customer.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
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