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B0303MY-2WR1
● High efficiency with low output ripple and noise
● Low no-load power consumption and low quiescent current
- Product Description
- Parameter Introduction
- Precautions
-
● Small size, high power density● High efficiency with low output ripple and noise.● Low no-load power consumption and low quiescent current.● Long-duration short-circuit protection with auto-recovery● Good thermal stability and excellent temperature characteristics.● Operating temperature range: -40°C to +85°C● Isolation voltage up to 1500 VDC● High reliability (MTTF ≥ 3.5 million hours)● International-standard SIP package, saving PCB mounting space.● Environmentally friendly design, compliant with the RoHS Directive.● 100% Full-load aging
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Product Model List
Model number
Rated Input Voltage (V)
Rated output
Typical Efficiency (%)
Maximum capacitive load
(uF)
Nominal
Scope
Voltage (V)
Current (mA)
B0303MY-2WR13.3
3.0~3.6
3.3
606
73
3300
B0503MY-2WR1
5
4.5~5.5
3.3
606
79
3300
B0505MY-2WR1
5
400
84
3300
B0507MY-2WR1
7.2
278
86
2200
B0509MY-2WR1
9
222
87
2200
B0512MY-2WR1
12
167
87
2200
B0515MY-2WR1
15
133
85
2200
B0524MY-2WR1
24
83
86
1000
B1205MY-2WR1
12
10.8~13.2
5
400
85
3300
B1209MY-2WR1
9
222
87
2200
B1212MY-2WR1
12
167
88
2200
B1215LSY-2WR1
15
133
86
2200
B1224MY-2WR1
24
83
88
1000
B1505MY-2WR1
15
13.5~16.5
5
400
84
2200
B1515MY-2WR1
15
133
86
2200
B1524MY-2WR1
24
83
86
1000
B2403MY-2WR1
15
13.5~16.5
3.3
606
80
3300
B2405MY-2WR1
5
400
85
3300
B2409MY-2WR1
9
222
89
2200
B2412MY-2WR1
12
167
85
2200
B2415MY-2WR1
15
133
88
2200
B2424MY-2WR1
24
83
85
1000
Output characteristics
Project
Conditions
Minimum
Typical
Maximum
Unit
Output power
0.2
2
W
Line regulation of voltage
Under rated load, the input voltage varies by ±1%.
±1.2
±1.5
%
Load Regulation Rate
Under nominal input conditions, the load varies from 10% to 100%.
10
15
Quiescent current
Under the rated input, with the output load at 0 Ω.
B03XX
≤25
mA
Other
≤10
Temperature drift coefficient
Under rated load
±0.03
%/°C
Ripple & Noise
Bandwidth: 20 MHz, using the parallel‑line method.
50
100
mVp-p
Switching frequency
Rated input voltage
250
KHz
Output short-circuit protection
Long-duration short-circuit protection
Input filter
Capacitor filtering
Hot-swappable
Not supported
Output voltage accuracy
See the error envelope plot.
Insulation properties
Project
Test conditions
Minimum
Typical
Maximum
Unit
Insulation resistance
500VDC
1000
MΩ
Insulation voltage
Test duration: 1 minute; leakage current less than 1 mA.
1500
VDC
General Characteristics
Project
Conditions
Minimum
Typical
Maximum
Unit
Storage humidity
5
95
%
Operating temperature
-40
85
°C
Storage temperature
-55
125
Case temperature rise during operation
15
25
Pin soldering temperature resistance
Solder joint is 1.5 mm from the housing; apply for 10 seconds.
300
MTTF
MIL-HDBK-217F@25℃
350
Ten thousand hours
Weight
2.4
Kerl
Cooling method
Natural air cooling
Housing material
Flame-retardant, heat-resistant plastic (UL94-V0)
-
Avoid operating under no-load conditions whenever possible: When the load power consumption is less than 10% of the module’s rated output power. % It is recommended to connect a dummy load at the output or to select modules with a lower rated power; the dummy load (resistor) can be set to 10% of the module’s rated power. % Calculate the resistance value R = U 2 /(10 % ×2W);Avoid excessively large output bypass capacitors: The external capacitor C2 at the output should not have an excessively large capacitance; otherwise, it may cause overcurrent during module startup or result in poor startup performance. The specific value should be selected based on the capacitor’s datasheet.This product series does not support hot-swapping on the input side or parallel operation on the output side.In applications with stringent ripple‑noise requirements, an external LC filter should be used. The resonant frequency of the LC filter must be significantly lower than the switching frequency of the DC/DC converter to prevent mutual interference that could increase output ripple or damage the module, as shown in the figure.

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