Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well IRM-05-3.3 Switching Power Supply 4.125W 3.3V 1.25A - Enc...
The IRM-05 is a 5W Mean Well power converter (input range: 85~305VAC).
Key Features
- ✓ Input voltage range: 85~305VAC
- ✓ 3KVAC reinforced I/O isolation
- ✓ Protections: Overload / Over voltage
- ✓ Safety approvals: WITHSTAND VOLTAGE IEC62368-1, UL62368-1, TUV EN62368-1, EAC TP TC 004, BSMI CNS14336 -1
- ✓ 3 years warranty
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BrandMean Well
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SeriesIRM Series
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Power Rating4.12 Watt
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Output Voltage3.3 Volt
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Rated Current1.25 Ampere
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Input Voltage85V~305V
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No of Output1
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Dimming ControlNone
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Standards MetBSMI,CB,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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Length1.8 in
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Width1 in
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Height0.85 in
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Weight0.07 lb
::specification::
Frequently Asked Questions
Can I use the IRM-05-3.3 to power a 3.3V microcontroller or embedded logic board?
Yes, it is a constant-voltage 3.3V supply rated for 4.125W and 1.25A. That makes it suitable for embedded controllers, logic boards, and low-power digital electronics that need a 3.3V rail within that output limit.
Is the IRM-05-3.3 appropriate for industrial IoT or communication electronics that run on 3.3V?
It can be a fit for 3.3V industrial IoT and communication circuits when total demand stays within 1.25A and 4.125W. The 85-305VAC input range is also useful when the finished equipment may be deployed on different AC mains systems.
Can this model be used in a compact automation board with 3.3V digital electronics?
Yes, especially where board space matters, because the encapsulated PCB-mount package is 45.7 × 25.4 × 21.5 mm. Its output is intended for low-power 3.3V electronics rather than mixed-voltage systems that need higher-power rails.
How does the IRM-05-3.3 compare with the other IRM-05 power supplies?
The IRM-05 family includes IRM-05-3.3 at 4.125W, 3.3V, 1.25A; IRM-05-5 at 5W, 5V, 1A; IRM-05-12 at 5.04W, 12V, 0.42A; IRM-05-15 at 4.95W, 15V, 0.33A; and IRM-05-24 at 5.52W, 24V, 0.23A. The 3.3V model provides the highest current in this group because it is the lowest-voltage version.
Can the IRM-05-3.3 be used in outdoor equipment or wide-temperature environments?
Its operating temperature range is -40°C to +85°C, which supports use in equipment designed for a broad temperature window. No IP rating is listed, so it should be used inside a suitable enclosure if the application involves dust, water, or outdoor exposure.
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