DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 1 of 6
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Selection Guide
Certification
Part No.
Input Voltage (VDC)
Output
Full Load
Efficiency (%)
Min./Typ.
Nominal
(Range)
Voltage
(VDC)
Current (mA)
Max./Min.
--
B0303S-1WR2
3.3
(2.97-3.63)
3.3
303/30
68/72
UL/CE/CB
B0305S-1WR2
5
200/20
72/76
B0312S-1WR2
12
84/9
76/80
--
B0303D-1WR2
3.3
303/30
68/72
B0305D-1WR2
5
200/20
72/76
B0503S-1WR2
5
(4.5-5.5)
3.3
303/30
68/72
UL/CE/CB
B0505S-1WR2
5
200/20
76/80
B0509S-1WR2
9
111/12
76/80
B0512S-1WR2
12
84/9
76/80
B0515S-1WR2
15
67/7
76/80
B0524S-1WR2
24
42/4
76/80
--
B0503D-1WR2
3.3
303/30
68/72
UL/CE/CB
B0505D-1WR2
5
200/20
76/80
B0509D-1WR2
9
111/12
76/80
B0512D-1WR2
12
84/9
76/80
B0515D-1WR2
15
67/7
76/80
B0524D-1WR2
24
42/4
76/80
--
B1203S-1WR2
12
(10.8-13.2)
3.3
303/30
68/72
UL/CE/CB
B1205S-1WR2
5
200/20
76/80
B1209S-1WR2
9
111/12
76/80
B1212S-1WR2
12
84/9
76/80
B1215S-1WR2
15
67/7
76/80
B1224S-1WR2
24
42/4
76/80
--
B1203D-1WR2
3.3
303/30
68/72
UL/CE/CB
B1205D-1WR2
5
200/20
76/80
B1209D-1WR2
9
111/12
76/80
B1212D-1WR2
12
84/9
76/80
B1215D-1WR2
15
67/7
76/80
--
B1505S-1WR2
15
(13.5-16.5)
5
200/20
76/80
B1512S-1WR2
12
84/9
76/80
B1515S-1WR2
15
67/7
76/80
1W isolated DC-DC with Fixed Input Voltage;
unregulated Single Output
CB Patent Protection RoHS
FEATURES
Continuous short-circuit protection
High efficiency up to 80%
Operating ambient temperature -40℃to +105℃
Compact SIP/DIP package
Industry standard pin-out
I/O isolation test voltage 1.5k VDC
IEC60950, UL60950, EN60950 approval
B_S-1WR2 & B-D-1WR2 series is designed for use in distributed power supply systems and especially suitable in applications such as pure
digital circuits, low frequency analog circuits, relay-driven circuits and data switching circuits, where:
1. The voltage of the input power supply is relatively stable with a variation of ±10%Vin or less;
2. An input to output isolation voltage of up to 1500VDC is necessary;
3. The requirement for a tight output regulation and low ripple & noise is not as strict.
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 2 of 6
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--
B1505D-1WR2
15
(13.5-16.5)
5
200/20
76/80
B1509D-1WR2
9
111/12
76/80
B1515D-1WR2
15
67/7
76/80
B2403S-1WR2
24
(21.6-26.4)
3.3
303/30
68/72
UL/CE/CB
B2405S-1WR2
5
200/20
76/80
B2409S-1WR2
9
111/12
76/80
B2412S-1WR2
12
84/9
76/80
B2415S-1WR2
15
67/7
76/80
B2424S-1WR2
24
42/4
76/80
--
B2403D-1WR2
3.3
303/30
68/72
UL/CE/CB
B2405D-1WR2
5
200/20
76/80
B2409D-1WR2
9
111/12
76/80
B2412D-1WR2
12
84/9
76/80
B2415D-1WR2
15
67/7
76/80
B2424D-1WR2
24
42/4
76/80
Input Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Input Current
(full load / no-load)
3.3V input
--
404/30
--/70
mA
5V input
--
277/20
--/60
12V input
--
115/15
--/50
15V input
--
83/10
--/35
24V input
--
57/17
--/30
Reflected Ripple Current
--
15
--
mA
Surge Voltage (1sec. max.)
3.3 input
-0.7
--
5
VDC
5V input
-0.7
--
9
12V input
-0.7
--
18
15V input
-0.7
--
21
24V input
-0.7
--
30
Input Filter
Filter capacitor
Hot Plug
Unavailable
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Voltage Accuracy
See Output Regulation Curves (Fig. 1)
Linear Regulation
Input voltage
change: ±1%
3.3VDC output
--
--
±1.5
--
Other output
--
--
±1.2
Load Regulation
10%-100% load
3.3VDC output
--
18
--
%
5VDC output
--
12
--
9VDC output
--
8
--
12VDC output
--
7
--
15VDC output
--
6
--
24VDC output
--
5
--
Ripple & Noise*
20MHz bandwidth
--
60
150
mVp-p
Temperature Coefficient
Full load
--
--
±0.03
%/℃
Short-Circuit Protection**
B03xxS-1WR2/B03xxD-1WR2/B24xxS-1WR2/
B24xxD-1WR2/B0524S-1WR2/ B0524D-1WR2
--
--
1
s
Others
Continuous, self-recovery
Notes: * The “parallel cable” method is used for Ripple and Noise test, please refer to
DC-DC Converter Application Notes
for specific information.
** At the end of the short circuit duration, the supply voltage must be disconnected from following models: B03xxS-1WR2 / B03xxD-1WR2 series,
B24xxS-1WR2/ B24xxD-1WR2 series, and B0524S-1WR2/B0524D-1WR2.
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 3 of 6
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Electromagnetic Compatibility (EMC)
Emissions
CE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
RE
CISPR32/EN55032 CLASS B (see Fig. 4 for recommended circuit)
Immunity
ESD
IEC/EN61000-4-2 Contact ±8KV perf. Criteria B
Typical Performance Curves
3.3VDC output
All other output voltages
Fig. 1
General Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Isolation
Input-output Electric strength test for 1 minute
with a leakage current of 1mA max.
1500
--
--
VDC
Insulation Resistance
Input-output resistance at 500VDC
1000
--
--
MΩ
Isolation Capacitance
Input-output capacitance at 100kHz/0.1V
--
20
--
pF
Operating Temperature
Derating when operating temperature up to
85℃, (see Fig. 2)
-40
--
105
℃
Storage Temperature
-55
--
125
Case Temperature Rise
Ta=25℃, nominal input, full load output
--
25
--
Pin Soldering Resistance
Temperature
Soldering spot is 1.5mm away from case for 10
seconds
--
--
300
Storage Humidity
Non-condensing
--
--
95
%RH
Switching Frequency
Full load, nominal input voltage
--
100
--
kHz
MTBF
MIL-HDBK-217F @ 25℃
3500
--
--
k hours
Mechanical Specifications
Case Material
Black plastic; flame-retardant and heat-resistant (UL94-V0)
Dimensions
B_S-1WR2 series
11.60 x 6.00 x 10.16 mm
B_D-1WR2 series
12.70 x 10.16 x 8.20 mm
Weight
B_S-1WR2 series
1.3g (Typ.)
B_D-1WR2 series
1.8g (Typ.)
Cooling Method
Free air convection
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 4 of 6
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120
100
80
60
40
20
0
Output Power Percent(%)
Ambient Temp.( )
℃
Temperature Derating Curve
Safe Operating Area
-40 0 40 85 105 120
Fig. 2
Design Reference
1. Typical application
Input and/or output ripple can be further reduced, by connecting a filter capacitor from the input and/or output terminals to ground as
shown in Fig.3.
Choosing suitable filter capacitor values is very important for a smooth operation of the modules, particularly to avoid start-up problems
caused by capacitor values that are too high. For recommended input and output capacitor values refer to Table 1.
Vin
GND
+Vo
0V
DC
Cin
DC
Cout
Fig.3
Table 1: Recommended input and output capacitor values
Vin(VDC)
Cin(µF)
Vo (VDC)
Cout(µF)
3.3/5
4.7
3.3/5
10
12
2.2
9
4.7
15
2.2
12
2.2
24
1
15
1
--
--
24
0.47
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 5 of 6
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2. EMC (CLASS B) compliance circuit
Vin
GND
+Vo
0V
DC/DC LOAD
LDM
C1
Vin
GND
C2
Fig. 4
Input voltage (VDC)
3.3/5/12/15/24
EMI
C1
4.7µF /50V
C2
Refer to the Cout in Fig.3
LDM
6.8µH
3. Minimum Output Load Requirement
For a reliable and efficient operation of the converter, the minimum load should never be less than 10% of the rated output load. If the total
required output power is below 10%, a parallel bleeding resistor is required on the output, ensuring that the sum of the power consumption is
always maintained at 10% minimum.
4. For additional information, please refer to DC-DC converter application notes on
www.mornsun-power.com
Dimensions and Recommended Layout (B_S-1WR2)
Note:
Unit :mm[inch]
Pin section tolerances :±0.10[±0.004]
General tolerances:±0.25[±0.010]
Note：Grid 2.54*2.54mm
4
1 2 3
0.50 [0.020]
10.16 [0.400]
7.62 [0.300]
0.30 [0.012]
2.54 [0.100] 0.50 [0.020]
Front View
Bottom View 1
2
3
4
GND
Vin
+Vo
0V
Pin Function
Pin-Out
∅1.00 [∅0.039]
1100000301-B0
321 4
THIRD ANGLE PROJECTION
0.90 [0.035]
4.10 [0.161]
11.60 [0.457]
6.00 [0.236]
DC/DC Converter
B_S-1WR2 & B_D-1WR2 series
2018.12.05-B/2 Page 6 of 6
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Dimensions and Recommended Layout (B_D-1WR2)
14
75
1
4
5
7
Function
Note:Grid 2.54*2.54mm
Bottom view
Front view
Pin-Out
Pin
Note:
Unit :mm[inch]
Pin section tolerances:±0.10[±0. 004]
General tolerances:±0.25[±0.010]
7.70 [0.303]
12.70 [0.500]
10.16 [0.400]
7.62 [0.300]
7.62 [0.300]
5.08 [0.200]
0.30 [0.012]
∅1.00 [∅0.039]
4.10 [0.161]
0.50 [0.020]
14
5
7
8.20 [0.323]
∅1.00 [∅0.039]
1100000501-B0
5.10 [0.201]
THIRD ANGLE PROJECTION
GND
Vin
0V
+Vo
Notes:
1. For additional information on Product Packaging please refer to www.mornsun-power.com. Packaging bag number:
58200003(B_S-1WR2), 58200011(B_D-1WR2)；
2. In order to guarantee product performance and datasheet compliance, the product must be operated within specifications and load
range requirement;
3. The specified maximum capacitive load is tested under full load condition and over the input voltage range;
4. All parameters in this datasheet were measured under following conditions: Ta=25 ℃, relative humidity<75%RH, nominal input voltage
and rated output load (unless otherwise specified);
5. All index testing methods in this datasheet are based on our corporate Company standards;
6. For special requirements and customization service, please contact your nearest MORNUSN sales representative or one of our
technicians;
7. Products are related to laws and regulations: see "Features" and "EMC";
8. Our products shall be handled according to ISO14001 and related environmental laws and regulations by qualified personnel only.
MORNSUN Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China
Tel: 86-20-38601850 Fax: 86-20-38601272 E-mail: sales@mornsun.cn www.mornsun-power.com