Over 15 years experience of providing support of MEAN WELL Power Supplies
Description
Description
The SCW03B is a 3W Mean Well power converter.
Key Features
- ✓ 1KVDC reinforced I/O isolation
- ✓ Protections: Short circuit / Overload
- ✓ 3 years warranty
Specifications
Specifications
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BrandMean Well
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Input Voltage18V~36V
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Dimming ControlNone
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Standards MetEAC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~71°C
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Length1.25 in
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Width0.8 in
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Height0.48 in
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Weight0.03 lb
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Frequently Asked Questions
What are the key electrical ratings of the Mean Well SCW03B-12?
The SCW03B-12 is a 3W DC-DC converter with a 18 to 36V DC input range and a regulated 12V DC output. Its rated output current is 0.25A. This makes it a compact option for low-power 12V DC conversion within a 24V-class input system.
Is the SCW03B-12 suitable for systems that need a wide input voltage range?
Yes. This model has a 2:1 wide input range, specified here as 18 to 36V DC, which gives more tolerance for input variation than a fixed-input converter. That makes it relevant for industrial and embedded DC systems where the supply voltage may fluctuate within that range.
Does the Mean Well SCW03B-12 require a minimum load to regulate properly?
No. The SCW03B-12 is specified with no minimum load requirement, so it can be used in designs where the output load may be very light or intermittent. That is useful for control, monitoring, and low-duty-cycle electronics that do not draw steady current all the time.
What protection and isolation features does the SCW03B-12 include?
This model includes continuous short-circuit protection, overload protection, and input under-voltage protection. It also provides 3KVDC input-to-output isolation. Those features support use in applications where protection and electrical separation are important selection criteria.
Can the SCW03B-12 be used in demanding temperature environments?
It is designed for wide-temperature operation, with product data listing operation down to -40°C and up to 71°C. That makes it more suitable than basic commercial-grade converters for equipment exposed to colder or warmer operating conditions. Buyers should still confirm the full system thermal design around the converter.




