WRA_LT-3W & WRB_LT-3W Series
3W, WIDE INPUT, ISOLATED & REGULATED
SINGLE/DUAL OUTPUT DC/DC CONVERTER
multi-country patent protection RoHS
FEATURES
PRODUCT PROGRAM
Wide (2:1) input range
Operating temperature: -40°C ~ +85°C
1500VDC isolation
No heat sink required
Internal SMD construction
MTBF>1,000,000 hours
Short circuit protection(Automatic recovery)
Industry standard pinout
RoHS Compliance
Input
Output
Part
Number
Efficiency
(%, Typ.)
Voltage (VDC)
Current (mA)
Voltage
(VDC)
Nominal Range Max.**
Max.
±300
±125
±100
833
Min.
WRA1205LT-3W *
WRA1212LT-3W *
WRA1215LT-3W *
WRB1203LT-3W *
WRB1205LT-3W *
WRB1212LT-3W *
WRB1215LT-3W *
WRA2405LT-3W
WRA2412LT-3W *
WRA2415LT-3W *
WRB2403LT-3W *
WRB2405LT-3W *
WRB2412LT-3W *
WRB2415LT-3W *
WRA4805LT-3W *
WRA4812LT-3W *
WRA4815LT-3W *
WRB4803LT-3W *
WRB4805LT-3W *
WRB4812LT-3W *
WRB4815LT-3W *
*Designing.
±5
±12
±15
3.3
5
±30
±13
±10
83
76
80
80
72
74
78
80
76
80
80
74
76
80
80
76
80
80
74
76
80
80
12
24
48
9-18
18-36
36-72
22
40
80
600
60
12
250
25
15
200
20
±5
±300
±125
±100
833
±30
±13
±10
83
APPLICATIONS
±12
±15
3.3
5
The WRA_LT-3W & WRB_LT-3W Series are
specially designed for applications where a wide
range input voltage power supplies are isolated
from the input power supply in a distributed
power supply system on a circuit board.
These products apply to:
600
60
12
250
25
15
200
20
1) Where the voltage of the input power supply is
wide range(voltage range≤2:1);
±5
±300
±125
±100
833
±30
±13
±10
83
±12
±15
3.3
5
2) Where isolation is necessary between input
and output (Isolation Voltage ≤1500VDC);
3) Where the regulation of the output voltage
and the output ripple noise are demanded.
600
60
12
250
25
15
200
20
**Input voltage can’t exceed this value, or will cause the permanent damage.
MODEL SELECTION
WRB2412LT-3W
COMMON SPECIFICATIONS
Item
Test conditions
Min.
Typ.
Max.
95
Units
%
Rated Power
Package Style
Output Voltage
Storage humidity range
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Short circuit protection
Cooling
85
-40
-55
Input Voltage
125
Product Series
°C
15
1.5mm from case for 10 seconds
245
Continous, automatic recovery
Free air convection
MORNSUN Science & Technology co.,Ltd.
Address: 2th floor 6th building, Huangzhou Industrial
District, Guangzhou, China
Tel: 86-20-38601850
Fax: 86-20-38601272
Package material
MTBF
Epoxy Resin (UL94-V0)
1000
K hours
g
Weight
5.2
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by Mornsun
Specifications subject to change without notice.
WRA_LT_3W & WRB_LT_3W A/2-2009 Page 1 of 3
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