Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302

1

ISOLATED DC/DC CONVERTERS

36 Vdc - 75 Vdc Input 12 Vdc /25 A Output, 1/4 Brick

March 27, 2009

Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.

Features



Isolated



Output Over-Voltage Shutdown



High Efficiency



Output Voltage Trim



High Power Density



OCP/SCP



Fixed Frequency (250 kHz)



Over Temperature Protection



Low Cost



Remote On/Off



Input Under-Voltage Lockout



Positive/Negative Remote Sense



Basic Insulation



Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592)



TUV EN60950-1 Recognized (Pending)



UL60950-1 Recognized (UL/cUL) (Pending)

Applications



Networking



Computers and peripherals



Telecommunications

Description

The 0RQB-T0T12X is an isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit will

provide up to 300 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and

low cost. Features include remote on/off, over current protection and under voltage lockout. The converter is

provided in an industry standard quarter brick package.

Part Selection

Output

Voltage

Input Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Model Number

Active High

Model Number

Active Low

12 Vdc

36 Vdc - 75 Vdc

25 A

300 W

95.5%

0RQB-T0T120

0RQB-T0T12L

Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.

Part Number Explanation

0 R QB – T0 T 12 0

1 2

3

4

5 6

7

1---Through hole

2---RoHS 6, change “R” to “7” means RoHS 5

3---Series name, 1/4 Brick

4---Series code

5---Input range 48V wide (36-75V)

6---Output voltage 12V

7---Remote sense, active high, change “0” to “L” means active low

0RQB-T0T12x

RoHS Compliant

Rev.C