Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well SDM30-48S3 DC-DC Converter - 16.5W - 36~72V in 3.3V out
The SDM30 is a 30W Mean Well power converter (operating temperature: -25~+85℃).
Key Features
- ✓ 1KVDC reinforced I/O isolation
- ✓ Cooling by free air convection
- ✓ Wide operating temperature: -25~+85℃
- ✓ Protections: Short circuit / Overload / Over voltage
- ✓ Remote ON/OFF control
- ✓ 3 years warranty
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BrandMean Well
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SeriesSDM Series
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Power Rating16.5 Watt
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Output Voltage3.3 Volt
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Rated Current5 Ampere
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Input Voltage36V~72V
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No of Output2
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Dimming ControlNone
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Standards MetCE,EMC
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Operation ModeConstant Voltage
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Operating Temperature-25°C~85°C
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Warranty2 Year
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Length2 in
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Width2 in
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Height0.63 in
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Weight0.22 lb
::specification::
Frequently Asked Questions
Can I use the SDM30-48S3 to power 3.3V embedded controllers from a 36~72V supply?
Yes, this model is intended for a 36~72V input and provides a constant 3.3V output. Its 16.5W rating and 5A output current make it relevant for embedded control electronics that need a higher-current 3.3V rail. The small 50.8 × 50.8 × 16.0 mm footprint also helps in dense control hardware.
Is the SDM30-48S3 suitable for industrial logic boards or low-voltage digital electronics?
It is a sensible fit when the equipment requires regulated 3.3V and the total load stays within 5A and 16.5W. That combination is more aligned with digital logic, processors, and communication electronics than with higher-voltage loads. The constant-voltage output is appropriate for 3.3V circuits that need stable supply regulation.
Can this converter be used in automation equipment with a 48V bus and 3.3V control electronics?
Yes, a 48V bus sits inside the 36~72V input range listed for this unit. The converter steps that input down to 3.3V at up to 5A, which can suit compact automation or embedded electronics with significant low-voltage current demand. Buyers should still keep the full load within the 16.5W rating.
What is the difference between the SDM30-48S3 and the other SDM30 models in this family?
For the 36~72V input variants, this SDM30-48S3 is 16.5W at 3.3V and 5A, while the SDM30-48S5 is 25W at 5V and 5A, the SDM30-48S12 is 35W at 12V and 2.5A, and the SDM30-48S15 is 30W at 15V and 2A. The related 12V-input branch includes SDM30-12S3 at 16.5W, SDM30-12S5 at 25W, SDM30-12S12 at 25.2W, and SDM30-12S15 at 25.5W, while the 24V-input branch includes SDM30-24S3 at 16.5W, SDM30-24S5 at 25W, SDM30-24S12 at 30W, and SDM30-24S15 at 30W. The differentiators are input range and the output voltage/current combination.
Is the SDM30-48S3 meant for outdoor installations or enclosed equipment?
The temperature spec of -25°C to +85°C supports use across a wide operating range. However, no IP rating is listed in the provided specs, so it should be treated as a board-level or enclosed-equipment converter rather than an exposed outdoor unit. Outdoor suitability normally requires a stated ingress-protection rating in addition to temperature data.
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