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Mean Well MFM-05-3.3 Power Supply 5W 3.3V 1.25A
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Mean Well MFM-05-3.3 Power Supply 5W 3.3V 1.25A
No minimum load required
Typical lifetime > 52K hours
Touch current<80 μA/264VAC
Key Features
- ✓1.65"x0.88" 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<0.075W
- ✓Extremely low leakage current
- ✓Wide operating temp. range -40~+85°C
- ✓EMI Class B for class II configuration
- ✓Protections: Short circuit/ Overload/ Over voltage/Over temperature
- ✓No minimum load requiredTypical lifetime > 52K hours
- ✓3 years warranty
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BrandMean Well
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SeriesMFM Series
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Power Rating4.1 Watt
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Output Voltage3.3 Volt
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Rated Current1.25 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-40°C~85°C
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Warranty3 Year
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Length1.65 in
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Width0.88 in
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Height0.81 in
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Weight0.04 lb
::specification::
Frequently Asked Questions
Can I use the MFM-05-3.3 for a 3.3V embedded controller or sensor board?
Yes, this is a constant voltage 3.3V supply rated for 4.1W and 1.25A. It suits low-power embedded controllers, sensor boards, and logic-level electronics that need a regulated 3.3V rail within that output limit.
Is the MFM-05-3.3 a fit for compact industrial or automation electronics with 3.3V logic?
It can fit compact automation or industrial electronics that run from a 3.3V constant voltage input and do not exceed 1.25A. The PCB-type format and 42.0 × 22.3 × 20.5 mm size make it relevant where board space is limited.
Can this model power low-voltage IT or communications circuitry?
It is intended for low-power 3.3V electronics rather than higher-voltage loads. The output is limited to 4.1W total at 3.3V and 1.25A, so it matches small IT or communications boards that stay inside those limits.
How does the MFM-05-3.3 compare with other MFM power supplies?
The MFM range covers 3.3V, 5V, 12V, 15V, 24V, and 48V outputs with ratings from 4.1W to 31.2W. Siblings include MFM-05-5 at 5W 5V 1A, MFM-05-12 at 5W 12V 0.42A, MFM-05-15 at 5W 15V 0.33A, MFM-05-24 at 5.5W 24V 0.23A, MFM-10-3.3 at 8.3W 3.3V 2.5A, MFM-10-5 at 10W 5V 2A, MFM-10-12 at 10.2W 12V 0.85A, MFM-10-15 at 10W 15V 0.67A, MFM-10-24 at 10W 24V 0.42A, MFM-15-3.3 at 11.6W 3.3V 3.5A, MFM-15-5 at 15W 5V 3A, MFM-15-12 at 15W 12V 1.25A, MFM-15-15 at 15W 15V 1A, MFM-15-24 at 15.1W 24V 0.63A, MFM-20-3.3 at 14.9W 3.3V 4.5A, MFM-20-5 at 20W 5V 4A, MFM-20-12 at 21.6W 12V 1.8A, MFM-20-15 at 21W 15V 1.4A, MFM-20-24 at 21.6W 24V 0.9A, MFM-30-3.3 at 19.8W 3.3V 6A, MFM-30-5 at 30W 5V 6A, MFM-30-12 at 30W 12V 2.5A, MFM-30-15 at 30W 15V 2A, MFM-30-24 at 31.2W 24V 1.3A, and MFM-30-48 at 30.2W 48V 0.63A. The MFM-05-3.3 is the lowest-voltage, 4.1W option in the group.
Is the MFM-05-3.3 suitable for outdoor equipment?
The operating temperature range is -40°C to +85°C, which defines the thermal range in the specs. However, no IP rating is listed, so the provided data does not specify outdoor dust or water protection.
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Other MFM-05 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well MFM-05-5 Power Supply 5W 5V 1A | 5W | 5V | 1A | Indoor | $8.68 | View |
| Mean Well MFM-05-24 Power Supply 5W 24V 230mA | 5.5W | 24V | 0.23A | Indoor | $8.68 | View |
| Mean Well MFM-05-15 Power Supply 5W 15V 330mA | 5W | 15V | 0.33A | Indoor | $8.68 | View |
| Mean Well MFM-05-12 Power Supply 5W 12V 420mA | 5W | 12V | 0.42A | Indoor | $8.68 | View |
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