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D120909SY-1WR1
● High efficiency with low output ripple and noise
● Low no-load power consumption and low quiescent current
- Product Description
- Parameter Introduction
- Precautions
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● 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 3000 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)
D030505SY-1WR1
3.3
3.0~3.6
5/5
100/100
84
2200
D050303SY-1WR1
5
4.5~5.5
3.3/3.3152/152802200D050505SY-1WR1
5/5
100/100
85
2200
D050509SY-1WR1
5/9
100/56
84
1000
D050512SY-1WR1
5/12
100/42
83
820
D050515SY-1WR1
5/15
100/33
86
1000
D050606SY-1WR1
6/6
83/83
83
1000
D050707SY-1WR1
7.2/7.2
69/69
83
1000
D050909SY-1WR1
9/9
56/56
85
1000
D051212SY-1WR1
12/12
42/42
85
680
D051515SY-1WR1
15/15
33/33
82
680
D052424SY-1WR1
24/24
21/21
84
680
D080909SY-1WR18
7.2~8.8
9/9
56/56
83
1000
D120505SY-1WR1
12
10.8~13.2
5/5
100/100
84
1000
D120512SY-1WR1
5/12
100/42
82
820
D120909SY-1WR1
9/9
56/56
85
1000
D120910SY-1WR1
9/10
56/50
83
1000
D121212SY-1WR1
12/12
42/42
88
680
D121515SY-1WR1
15/15
33/33
1000
D151212SY-1WR1
15
13.5~16.5
12/12
42/42
83
820
D151515SY-1WR1
15/15
33/33
820
D240303SY-1WR1
24
21.6~26.4
3.3/3.3
152/152
83
2200
D240505SY-1WR1
5/5
100/100
87
2200
D240909SY-1WR1
9/9
56/56
84
1000
D241212SY-1WR1
12/12
42/42
84
1000
D241515SY-1WR1
15/15
33/33
79
680
D242424SY-1WR1
24/24
21/21
88
470
Output characteristics
Project
Conditions
Minimum
Typical
Maximum
Unit
Output power
0.1
1
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 nominal input, with the output load at 0 Ω.
D03XX
≤20
mA
D05XX
≤20
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 time between input and output: 1 minute; leakage current less than 1 mA.1500
VDC
Test duration between Output 1 and Output 2: 1 minute; leakage current less than 1 mA.1000
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
2.1
Kerl
Cooling method
Natural air cooling
Housing material
Flame-retardant, heat-resistant plastic (UL94-V0)
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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: resistance value R = U 2 /(10 % ×1W);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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