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Mean Well SCWN03A-03 DC-DC Converter - 3W 9~18V DC in 3.3V out
Description
Description
Features
| DIP24 package with industry-standard pinout |
| 2:1 wide input range |
| Operating temperature range -40~+90°C |
| No minimum load required |
| Comply to BS EN/EN55032 radiated Class A without additional components |
| High efficiency up to 87% |
| Protections: Short circuit(Continuous)/Overload/Input under voltage |
| 3KVDC I/O isolation |
| 3 years warranty |
General Specification
| Voltage set point accuracy | ±1.5% (max.) |
| Line regulation | ±0.5% (max.) |
| Load regulation | Single output models:±0.5%, Dual output models:±1% |
| Overload protection | 120%~250%, auto-recovery |
| Efficiency | 87% (typical) |
| Short circuit protection | Continuous, auto-recovery |
| I/O isolation voltage | I/P-O/P:3KVDC |
| I/O isolation resistance | I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH |
| Isolation capacitance | 250pF (max.) |
| Working temperature | -40~+90°C |
| Storage temperature | -40°C to +105°C |
| EMC | Compliance to EN55032 class A, EN61000-4-2,3,4,5,6,8 |
| Temp. Coefficient | 0.03% / ℃ (0 ~ 85℃) |
| Dimension (LxWxH) (mm) | 31.8*20.3*10.2mm (1.25*0.8*0.4 inch) |
| Case material | Non-conductive black plastic(UL 94V-0 rated) |
Specifications
Specifications
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BrandMean Well
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SeriesSCWN Series
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Power Rating3 Watt
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Output Voltage3.3 Volt
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Rated Current0.6 Ampere
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Input Voltage9V~18V
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No of Output1
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Dimming ControlNone
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Standards MetCE,EAC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~90°C
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Warranty3 Year
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Length1.25 in
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Width0.8 in
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Height0.4 in
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Weight0.03 lb
File Downloads
File Downloads
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Payment & Security
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Frequently Asked Questions
Can I use the SCWN03A-03 to supply 3.3V microcontrollers or logic circuits in embedded equipment?
Yes, this model provides a constant 3.3V output with up to 0.6A output current. With a 3W rating, it is suited to lower-power embedded and control electronics that need a regulated 3.3V rail.
Is the SCWN03A-03 suitable for low-power industrial sensors or interface boards that run on 3.3V?
It can fit 3.3V industrial electronics when the load stays within 0.6A and 3W. The converter is intended for constant-voltage output, which is useful for stable low-power control and sensing circuits.
Can this converter be used in compact automation assemblies with a 9~18V input source?
Yes, the listed input range is 9~18V and the housing is 31.8 × 20.3 × 10.2 mm. That combination makes it relevant for compact embedded or automation designs that need a small 3.3V conversion stage.
How does the SCWN03A-03 compare with the other SCWN03A versions?
All models in this sibling group are 3W constant-voltage converters with the same 9~18V input range. The outputs differ as follows: SCWN03A-03 is 3.3V at 0.6A, SCWN03A-05 is 5V at 0.6A, SCWN03A-12 is 12V at 0.25A, and SCWN03A-15 is 15V at 0.2A.
Can the SCWN03A-03 handle demanding ambient temperatures, and is it rated for outdoor use?
The operating temperature range is -40°C to +90°C, which supports use across a broad temperature span. No IP rating is listed in the provided specs, so these details do not confirm outdoor or water-exposed use.
