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Mean Well IRM-20-3.3 Switching Power Supply 3W 3.3V 4.5A - Encapsul...
The IRM-20 is a 20W 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 Rating14.85 Watt
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Output Voltage3.3 Volt
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Rated Current4.5 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-30°C~70°C
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Warranty3 Year
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Length2.06 in
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Width1.07 in
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Height0.94 in
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Weight0.11 lb
::specification::
Frequently Asked Questions
Can I use the IRM-20-3.3 to power a 3.3V embedded controller board from AC mains?
Yes, this model is designed for constant-voltage 3.3V output up to 4.5A, with 14.85W total power. That makes it suitable for embedded controller boards, logic backplanes, or communication modules that run on 3.3V DC. The 85-305VAC input supports direct AC-powered equipment designs.
Is the IRM-20-3.3 a good fit for industrial communication or gateway hardware that runs on 3.3V?
It can be a good fit when the 3.3V electronics require no more than 4.5A. The output rating suits low-voltage digital hardware such as gateways, protocol modules, or board-level communications assemblies powered from an internal AC source. Its encapsulated PCB-mount format is intended for integration inside equipment.
Can this power supply support a 3.3V SBC or processor module in an automation system?
Yes, if the processor module and attached 3.3V loads stay within 14.85W and 4.5A. The supply delivers a fixed 3.3V output, which is appropriate for logic-level computing and embedded processing hardware. The compact 52.4 x 27.2 x 24.0 mm footprint also helps in dense controller layouts.
Would the IRM-20-3.3 work for low-voltage digital I/O and logic circuits?
It is intended for 3.3V constant-voltage loads, so it can serve digital I/O, logic, and control circuits that remain within 4.5A. Compared with higher-voltage models in the same family, this version is specifically aimed at low-voltage electronics rather than 12V, 15V, or 24V control rails. Buyers should match both the required voltage and total current draw to the 3.3V, 4.5A rating.
Is the IRM-20-3.3 suitable for outdoor electronic assemblies?
The specified operating temperature range is -30C to +70C, which supports a broad range of internal operating conditions. However, no IP rating is listed in the provided specs, so it should not be assumed to be suitable for direct outdoor exposure. It is better used inside a protected enclosure or equipment housing.
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Other IRM-20 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well IRM-20-24 Switching Power Supply 3W 24V 0.9A - Encapsulated | 21.6W | 24V | 0.9A | Indoor | $10.77 | View |
| Mean Well IRM-20-5 Switching Power Supply 3W 5V 4A - Encapsulated | 20W | 5V | 4A | Indoor | $10.77 | View |
| Mean Well IRM-20-15 Switching Power Supply 3W 15V 1.4A - Encapsulated | 21W | 15V | 1.4A | Indoor | $10.77 | View |
| Mean Well IRM-20-12 Switching Power Supply 3W 12V 1.8A - Encapsulated | 21.6W | 12V | 1.8A | Indoor | $10.77 | View |
