Over 15 years experience of providing support of MEAN WELL Power Supplies
Mean Well SCWN03C-03 DC-DC Converter - 3W 36~72V DC in 3.3V out
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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 Voltage36V~72V
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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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Length3.18 cm
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Width2.03 cm
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Height1.02 cm
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Weight0.01 kg
File Downloads
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Payment & Security
Payment methods
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Frequently Asked Questions
Can I use the SCWN03C-03 to power a 3.3V microcontroller or embedded logic board from a 36-72V source?
Yes, this converter is aimed at low-power 3.3V electronics because it provides a constant 3.3V output up to 0.6A. It should only be used where the load stays within 3W and the input source is within the specified 36-72V range.
Is the SCWN03C-03 suitable for industrial communication or sensor electronics that run on 3.3V?
It can fit low-power 3.3V industrial electronics, including control, sensing, or communication circuits that need a regulated low-voltage rail. Its usable limits are the 3.3V output, 0.6A maximum current, and 3W total output capacity.
Can this converter support a 3.3V control section inside a high-voltage DC bus system?
That is the type of use this model is built around, since the listed input range is 36-72V and the output is a constant 3.3V. It is best suited to a small logic or control section, not a higher-power 3.3V load.
Does the SCWN03C-03 make sense for compact embedded designs where board space matters?
Yes, its body is 31.8 × 20.3 × 10.2 mm and the unit weighs 0.0125 kg, which helps in compact embedded or control assemblies. The small form factor does not change the electrical limit, so the load still needs to stay within 3W and 0.6A.
Is the SCWN03C-03 appropriate for outdoor or unsealed equipment?
The temperature rating of -40°C to +90°C covers a broad operating range. However, the provided specs do not list an IP rating, so weather exposure or sealed outdoor suitability cannot be confirmed from this product data.
What is the difference between the SCWN03C-03 and the other SCWN03C output options?
The SCWN03C family shares a 36-72V input range and 3W power class, but the outputs differ. The SCWN03C-03 is 3.3V at 0.6A, the SCWN03C-05 is 5V at 0.6A, the SCWN03C-12 is 12V at 0.25A, and the SCWN03C-15 is 15V at 0.2A.
