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0RCY-65Y03X

型号：

0RCY-65Y03X

品牌：

BEL[ BEL FUSE INC. ]

页数：

18 页

PDF大小：

385 K

下载PDF手册
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
0RCY-65U03x  
Features  
RoHS Compliant  
Rev.E  
•
•
•
•
•
•
•
Output Over-Voltage Shutdown  
Output Voltage Trim  
OCP/SCP  
•
•
•
•
•
•
•
•
•
Isolated  
High Efficiency  
High Power Density  
Fixed Frequency (260 kHz)  
Low Cost  
Over Temperature Protection  
Remote On/Off  
Input Under-Voltage Lockout  
Input Over-Voltage Lockout  
Positive/Negative Remote Sense  
Basic Insulation  
Class 1, Category 2, Isolated DC/DC Converter (refer to IPC-9592)  
UL60950-1 Recognized (UL/cUL) (Pending)  
Applications  
•
•
•
Networking  
Computers and peripherals  
Telecommunications  
Description  
The 0RCY-65U03x is part of the isolated dc/dc converters that operates from a wide input range (18 Vdc - 75  
Vdc) and can cover both 24 Vin and 48 Vin input range. These units will provide up to 66 W of output power.  
They are designed to be highly efficient and low cost. Features include remote on/off, over current protection,  
over voltage shut down, over temperature protection and under-voltage lockout. These converters are provided in  
an industry standard 1/8 brick package.  
Part Selection  
Output  
Input Voltage  
Max. Output Max. Output  
Typical  
Efficiency  
Model Number  
Active High  
Model Number  
Active Low  
Voltage  
Current  
Power  
3.3 Vdc  
18 Vdc - 75 Vdc  
20 A  
66 W  
90%  
0RCY-65U033  
0RCY-65U03L  
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.  
Part Number Explanation  
0 R CY – 65 U 03 x  
1 2  
3
4
5 6  
7
1---Through hole  
2---RoHS 6, change “R” to “7” means RoHS 5  
3---Series name  
4---Series code  
5---Input range (18-75V)  
6---Output voltage 3.3V  
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  
1
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Absolute Maximum Ratings  
Unit  
V
Parameter  
Min  
-0.3  
-
Typ  
Max  
80  
Notes  
Continuous Input Voltage  
Input Transient Voltage  
Remote On/Off  
-
-
-
-
-
-
100  
18  
V
100 mS maximum  
-0.3  
-
V
I/O Isolation Voltage  
Ambient Temperature  
Storage Temperature  
1500  
85  
V
-40  
-55  
°C  
°C  
125  
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may  
permanently damage the device.  
Input Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Operating Input Voltage  
18  
24/48  
75  
V
Input Current (full load)  
Input Current (no load)  
Remote Off Input Current  
-
-
-
4.3  
65  
10  
5.0  
100  
15  
A
mA  
mA  
Tested with simulated source  
impedance of 10 uH, 5 Hz to 20 MHz;  
use a 100 uF/100 V electrolytic  
capacitor with ESR = 1 ohm max. at  
200 kHz at 25 °C.  
Input Reflected Ripple Current  
(rms)  
-
-
7
10  
50  
mA  
Input Reflected Ripple Current  
(pk-pk)  
30  
mA  
I2t Inrush Current Transient  
Turn-on Voltage Threshold  
Turn-off Voltage Threshold  
Input Over Voltage Lockout  
-
0.05  
16.8  
15.8  
78  
0.1  
17.5  
16.5  
80  
A2s  
V
16  
15  
76  
V
V
CAUTION: This converter is not internally fused. An input line fuse must be used in application.  
Recommend a fast-acting fuse with maximum rating of 8A on system board. Refer to the fuse  
manufacture’s datasheet for further information.  
Notes: 1. This converter has internal C-L-C (0.47uF-1.0uH-0.47uF+2.2uF) filter.  
2. For recommended external input filter, please refer to Safety section.  
3. All specifications are typical at 25 °C unless otherwise stated.  
Output Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Output Voltage Set Point  
3.234  
3.3  
3.366  
V
Vin=48V, Io=50% load  
Load Regulation  
Line Regulation  
-
-
±3.3  
±3.3  
±10  
±10  
mV  
mV  
Regulation Over Temperature  
(-40deg.C-85deg.C)  
-
±10  
±33  
mV  
0-20 MHz BW, with a 1µF ceramic  
capacitor and a 10uF Tantalum cap at  
output.  
Ripple and Noise (pk-pk)  
Ripple and Noise (rms)  
-
-
50  
15  
80  
25  
mV  
mV  
Ripple and Noise (pk-pk)  
under worst case  
over all operating input voltage, load  
and temperature conditions.  
-
-
150  
mV  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
2
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Output Specifications (continued)  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Output Current Range  
0
-
20  
A
Output DC Current Limit  
Short Circuit Surge Transient  
Rise Time  
23  
-
-
3
35  
5
A
A2s  
-
5
-
mS  
10  
10  
-
15  
20  
0
30  
30  
3
mS Ton(Enable form Vin)  
Turn on Time  
mS Ton(Enable form ON/OFF)  
Overshoot at Turn on  
%
Output Capacitance  
0
-
4800  
uF  
Transient Response  
Overshoot  
-
-
-
-
150  
200  
150  
200  
250  
350  
250  
350  
mV  
△V50%~75% of  
Max Load  
di/dt=0.1A/us, Vin=48Vdc, Ta=25°C,  
uS  
Settling Time  
Overshoot  
with a 1µF ceramic capacitor and a  
10uF Tantalum cap at the output.  
mV  
uS  
△V75%~50% of  
Max Load  
Settling Time  
Note: All specifications are typical at nominal input, full load at 25°C unless otherwise stated.  
General Specifications  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Vin=48V, full load  
88  
90  
-
%
Efficiency  
86  
88  
-
%
Vin=24V, full load  
Switching Frequency  
240  
260  
280  
kHz  
This voltage is achieved by trimming  
up output slowly  
Output Voltage Trim Range  
90  
-
110  
%Vo  
Over Temperature Protection  
Over Voltage Protection(Static)  
Weight  
-
-
-
125  
4.1  
40  
-
-
-
°C  
V
g
Calculated Per Bell Core SR-332  
(Vin=48 V, Vo=3.3 V, Io=16 A, Ta = 25  
°C, FIT=109/MTBF)  
FIT  
TBD  
-
-
Dimensions  
Inches (L × W × H)  
Millimeters (L × W × H)  
2.30 x 0.90 x 0.50  
58.42 x 22.76 x 12.72  
Isolation characteristics  
Input to Output  
-
-
1500  
V
V
Input to Case  
-
-
1500  
500  
Output to Case  
-
10M  
-
-
-
V
Isolation Resistance  
Isolation Capacitance  
ohm  
pF  
1500  
-
Note: All specifications are typical at 25 °C unless otherwise stated.  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
3
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Efficiency Data  
Efficiency Curve  
95.00%  
90.00%  
85.00%  
80.00%  
75.00%  
70.00%  
18V  
24V  
48V  
60V  
75V  
3
6
9
12  
15  
18 20.0  
Output Current (A)  
Thermal Derating Curves  
Maximum junction temperature of semiconductors derated to 120 degree C.  
Derating curve under 18V input  
Derating curve under 24V input  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
4
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Thermal Derating Curves (continued)  
Derating curve under 48V input  
Derating curve under 75V input  
Temperature reference points on top side  
Temperature reference points on bottom side  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
5
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Ripple and Noise Waveform  
24 Vdc input, 3.3Vdc/20A output  
48 Vdc input, 3.3Vdc/20A output  
Note: Ripple and Noise at full load, Ta=25°C, with a 1µF ceramic capacitor and a 10uF Tantalum cap at the  
output.  
Transient Response Waveforms  
50%-75%-50% Load Transients at Vin=24V  
50%-75%-50% Load Transients at Vin=48V  
Note: Transient Response at di/dt=0.1A/uS, Ta=25°C, with 1uF ceramic cap and 10uF Tantalum cap at  
output.  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
6
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Startup & Shutdown  
Rise Time  
Vout= 3.3V full load at Vin=24V@Ta=25℃  
Vout= 3.3V full load at Vin=48V@Ta=25℃  
Startup time  
Startup from Vin  
Startup from on/off  
Ch1: Vo, Ch3: Vin  
Ch1: Vo, Ch3: on/off  
Vout= 3.3V full load at Vin=24V@Ta=25℃  
Vout= 3.3V full load at Vin=24V@Ta=25℃  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
7
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Startup & Shutdown (continued)  
Startup time (continued)  
Startup from Vin  
Startup from on/off  
Ch1: Vo, Ch3: Vin  
Ch1: Vo, Ch3: on/off  
Vout= 3.3V full load at Vin=48V@Ta=25℃  
Vout= 3.3V full load at Vin=48V@Ta=25℃  
Shutdown  
Vout= 3.3V full load at Vin=24V@Ta=25℃  
Vout= 3.3V full load at Vin=48V@Ta=25℃  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
8
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Remote On/Off  
Parameter  
Min  
Typ  
Max  
Unit  
Notes  
Signal Low (Unit On)  
Signal High (Unit Off)  
Signal Low (Unit Off)  
Signal High (Unit On)  
Current Sink  
-0.3  
-
0.8  
V
0RCY-65U03L. The remote on/off pin  
open, Unit off.  
Active Low  
Active High  
2.4  
-0.3  
2.4  
0
-
-
-
-
18  
0.8  
18  
V
V
0RCY-65U033. The remote on/off pin  
open, Unit on.  
V
0.75  
mA  
Recommended remote on/off circuit for active low  
Vin+  
On/off  
Vin-  
Vin+  
On/off  
Vin-  
Control with open collector/drain circuit  
Control with photocoupler circuit  
Vin+  
Vin+  
Vcc  
On/off  
Vin-  
On/off  
Vin-  
Control with logic circuit  
Permanently on  
Recommended remote on/off circuit for active high  
Vin+  
Vin+  
On/off  
Vin-  
On/off  
Vin-  
Control with open collector/drain circuit  
Control with photocoupler circuit  
Vin+  
Vin+  
Vcc  
On/off  
Vin-  
On/off  
Vin-  
Control with logic circuit  
Permanently on  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
9
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Output Trim Equations  
Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected  
between the Trim pin and Sense (-) pin. The Trim Up resistor should be connected between the Trim pin and the  
Sense (+). Only one of the resistors should be used for any given application.  
Minimum trim down voltage is 2.97V  
Maximum trim up voltage is 3.63V.  
The total voltage increased by trim and remote sense should not exceed 5% of the nominal output voltage.  
Sense(+)  
511  
Rtrimdown =  
−10.22  
[kΩ  
]
Module  
Module  
Trim  
delta  
Rtrimdown  
Rtrimup  
Sense(-)  
Sense(+)  
Trim  
(100 + delta)⋅Vo⋅5.11− 626  
1.225⋅delta  
Rtrimup =  
−10.22[kΩ  
]
Sense(-)  
Note:  
(
)
Vo _ req −Vo  
delta =  
×100  
[%]  
Vo  
Vo_req=Desired (trimmed) output voltage [V]  
Output voltage Vo=3.3 V  
300  
270  
240  
1500  
1350  
1200  
1050  
900  
210  
180  
150  
120  
90  
750  
600  
450  
300  
60  
30  
0
150  
0
2.64 2.71 2.77 2.84 2.9 2.97 3.04 3.1 3.17 3.23 3.3  
Adjusted output voltage Vo,adj(V)  
3.3 3.33 3.37 3.4 3.43 3.46 3.5 3.53 3.56 3.6 3.63  
Adjusted output voltage Vo,adj(V)  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
10  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Remote Sense  
This module has remote sense compensation feature. It can minimize the effects of resistance between  
module’s output and load in system layout and facilitates accurate voltage regulation at load terminals or  
other selected point.  
1. The remote sense lines carries very little current and hence do not require a large cross-sectional area.  
2. This module compensates for a maximum drop of 10% of the nominal output voltage.  
3. If the unit is already trimmed up, the available remote sense compensation range should be  
correspondingly reduced. The total voltage increased by trim and remote sense should not exceed 10%  
of the nominal output voltage.  
4. When using remote sense compensation, all the resistance, parasitic inductance and capacitance of the  
system are incorporated within the feedback loop of this module. It can make an effect on the module's  
compensation, affecting the stability and dynamic response. A 0.1uF ceramic capacitor can be  
connected at the point of load to de-couple noise on the sense wires.  
5. Recommend the connection of remote sense compensation as below figure. There are a resistor RS+  
(30.1 ohm) from Vo+ to Sense+ and a resistor RS- (10.5 ohm)) from Vo- to Sense- inside of this module.  
Vo+  
Sense+  
Load  
Sense-  
Vo-  
6. If not using remote sense compensation, please connect sense directly to output at module's pin, that is,  
connect sense+ to Vo+ and sense- to Vo- at module's pin, the shorter the better. See below figure.  
Vo+  
Sense+  
Load  
Sense-  
Vo-  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
11  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Over Current Protection  
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting  
circuitry and can endure current limiting for a few mili-seconds. If the overcurrent condition persists beyond a few  
milliseconds, the module will shut down into hiccup mode and restart once every 400mS. The module operates  
normally when the output current goes into specified range. The typical average output current is 5A during  
hiccup.  
CH1: Output voltage waveform  
CH4: output current waveform  
Test at: 48Vdc input, with a Rout (0.022ohm)  
Expansion of on time portion of above figure  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
12  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Over Voltage Protection  
The output overvoltage protection consists of circuitry that monitors the voltage on the output terminals. If the  
voltage on the output terminals exceeds the over voltage protection threshold, the module will shutdown into  
hiccup mode and restart once every 400mS. The module operates normally when the fault is cleared.  
Note: Due to maximum duty cycle limt, output voltage can not be trimed up to OVP set point in low line input.  
Test setup:  
Sense+  
K
Trim  
R
Sense-  
R=36k ohm  
CH1: Output voltage waveform  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
13  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Over Temperature Protection  
The OTP is achieved by thermistor RT and the threshold is set at 125C in non-latch mode; the hottest component  
Q1 reaches 125C with 100LFM air flow correspondingly. It will restart automatically when the temperature falls  
down to 100C. The protecting point will be varied a little under different conditions (air flow, ambient  
temperature,input voltage, load...).  
The hottest component on the top side: Q1  
The thermistor on the bottom side: RT  
Input Under-voltage Lockout  
Under-voltage Lockout  
Voltage Falling  
V1=16V  
V2=17V  
Voltage Rising  
Input Voltage (V)  
V1  
V2  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
14  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Safety & EMC  
Safety  
1. Material flammability UL94V-0  
2. UL Certification  
UL60950-1  
EMC  
1. Surge  
IEC61000-4-5  
2. DC-DIP  
3. Conductive EMI  
IEC61000-4-29  
EN55022 class A  
Compliance to EN55022 class A (both q.peak and average) with the following inductive and capacitive filter  
C4  
+Vin  
-Vin  
T1  
T1  
Conv.positive  
input  
C1  
C2  
C3  
Conv.negative  
input  
C5  
Item  
Designator  
Parameter  
Vendor  
Vendor P/N  
1
2
3
4
5
6
C1  
C2  
C3  
C4  
C5  
T1  
2.2uF/100V,ceramic  
47uF/100V, AL cap  
100uF/100V, AL cap  
Murata  
GRF32ER72A225KA11L  
UUJ2A470MNL1MS  
UVZ2A101MPD  
Nichicon  
Nichicon  
Johanson  
Johanson  
Pulse  
1000pF/2000V,ceramic  
1000pF/2000V,ceramic  
1.3mH, common mode  
202R18W102KV4E-****-RC  
202R18W102KV4E-****-RC  
P0402NL  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
15  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Safety & EMC (continued)  
Positive:  
Negative:  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
16  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Mechanical Outline  
Pin Connections  
Pin  
Name  
Function  
Pin Dia  
1
Vin+  
0.040’’  
Positive input voltage  
Input to turn converter  
on and off, referenced  
to Vin-  
2
On/Off  
0.040’’  
3
4
5
6
7
8
Vin-  
Vout-  
0.040’’  
0.060’’  
0.040’’  
0.040’’  
0.040’’  
0.060’’  
Negative input voltage  
Negative output voltage  
Negative remote sense  
Output voltage trim  
Positive output voltage  
Positive output voltage  
Sense-  
Trim  
Sense+  
Vout+  
Note: 1. Pin 5 must be connected to Vout(-).  
2. Leave Pin 6 open for nominal voltage.  
3. Pin 7 must be connected to Vout(+).  
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered  
using a peak solder temperature of no more than 260ºC for less than 5 seconds.  
Note:  
1) All Pins: Material - Copper Alloy;  
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate.  
2) Undimensioned components are shown for visual reference only.  
3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).  
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com  
17  
ISOLATED DC/DC CONVERTERS  
18 Vdc - 75 Vdc Input 3.3 Vdc /20 A Output, 1/8 Brick  
Mar. 24, 2010  
Bel Power Inc., a subsidiary of Bel Fuse Inc.  
Revision History  
Date  
Revision  
Changes Detail  
Approval  
Han  
2008-10-29  
2009-12-07  
2010-1-12  
2010-3-10  
2010-3-24  
A
B
C
D
E
First release.  
Change to new datasheet format, add OCP, OVP, OTP…etc.  
Update outline.  
XF Jiang  
XF Jiang  
XF Jiang  
XF Jiang  
Update thermal derating curves.  
Add thermal derating curves under 18V input and 75V input  
RoHS Compliance  
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and  
other hazardous substances from electronic products.  
©2010 Bel Fuse Inc. Specifications subject to change without notice. 032410  
18  
CORPORATE  
FAR EAST  
EUROPE  
Bel Fuse Inc.  
Bel Fuse Ltd.  
Bel Fuse Europe Ltd.  
206 Van Vorst Street  
Jersey City, NJ 07302  
Tel 201-432-0463  
Fax 201-432-9542  
www.belfuse.com  
8F/ 8 Luk Hop Street  
San Po Kong  
Kowloon, Hong Kong  
Tel 852-2328-5515  
Fax 852-2352-3706  
www.belfuse.com  
Preston Technology Management Centre  
Marsh Lane, Suite G7, Preston  
Lancashire, PR1 8UD, U.K.  
Tel 44-1772-556601  
Fax 44-1772-888366  
www.belfuse.com  
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