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Mean Well MFM-20-3.3 Power Supply 20W 3.3V
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Mean Well MFM-20-3.3 Power Supply 20W 3.3V
Description
Description
Touch current <80 μA/264VAC
Key Features
- ✓1.93"x0.94" compact size
- ✓Medical safety approved(2 x MOPP) according to ANSI/AAMI ES60601-1 and IEC/BS EN/EN60601-1
- ✓Suitable for BF application with appropriate system consideration
- ✓No-load power consumption<0.1W
- ✓Extremely low leakage current
- ✓Wide operating temp. range -35~+85°C
- ✓EMI Class B for class II configuration
- ✓Protections: Short circuit/ Overload/ Over voltage/Over temperature
- ✓No minimum load required
- ✓3 years warranty
Specifications
Specifications
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BrandMean Well
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SeriesMFM Series
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Power Rating14.9 Watt
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Output Voltage3.3 Volt
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Rated Current4.5 Ampere
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Input Voltage80V~264V
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No of Output1
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Dimming ControlNone
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Standards MetCB,CE,EAC,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-35°C~85°C
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Warranty3 Year
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Length1.93 in
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Width0.94 in
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Height0.91 in
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Weight0.06 lb
File Downloads
File Downloads
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Payment & Security
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Frequently Asked Questions
Can I use the MFM-20-3.3 for 3.3V embedded processors or logic boards?
Yes, this model is a constant voltage 3.3V supply with up to 4.5A output, which suits embedded processors, logic boards, and digital control electronics that require a regulated 3.3V rail. Its 14.9W rating makes it a better fit for higher-current 3.3V logic loads than the smaller MFM-05-3.3, MFM-10-3.3, and MFM-15-3.3 units.
Is the MFM-20-3.3 a good fit for industrial communication or I/O boards that run on 3.3V?
It can be a practical choice for industrial communication modules and 3.3V I/O boards because it provides 3.3V constant voltage at up to 4.5A. The wide 80-264VAC input also helps when the same design needs to accept common AC mains ranges.
Can this power supply support compact automation electronics that need more current at 3.3V?
Yes, the available 4.5A output is useful when a 3.3V automation board or embedded assembly draws more current than lighter-duty models can provide. The PCB type construction and 49.0 x 23.8 x 23.0 mm size also favor compact equipment layouts.
Will the MFM-20-3.3 work in harsh temperature conditions?
Its operating temperature range is -35C to +85C, so the electrical rating covers both low and high ambient conditions inside protected equipment. No IP rating is listed, so temperature capability should not be treated as outdoor weather protection.
How does the MFM-20-3.3 compare with the other 3.3V versions in the series?
For 3.3V output, the series includes MFM-05-3.3 at 4.1W and 1.25A, MFM-10-3.3 at 8.3W and 2.5A, MFM-15-3.3 at 11.6W and 3.5A, MFM-20-3.3 at 14.9W and 4.5A, and MFM-30-3.3 at 19.8W and 6A. The MFM-20-3.3 is the second-highest current option in that 3.3V group.
Other MFM-20 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well MFM-20-5 Power Supply 20W 5V | 20W | 5V | 4A | Indoor | $14.02 | View |
| Mean Well MFM-20-24 Power Supply 20W 24V | 21.6W | 24V | 0.9A | Indoor | $14.02 | View |
| Mean Well MFM-20-15 Power Supply 20W 15V | 21W | 15V | 1.4A | Indoor | $14.02 | View |
| Mean Well MFM-20-12 Power Supply 20W 12V | 21.6W | 12V | 1.8A | Indoor | $13.96 | View |
