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Mean Well IRM-03-3.3S Switching Power Supply 3W 3.3V 900mA - Encaps...
The IRM-03 is a 3W Mean Well power converter (input range: 85~305VAC, operating temperature: -30~+85℃).
Key Features
- ✓ Input voltage range: 85~305VAC
- ✓ 3KVAC reinforced I/O isolation
- ✓ Cooling by free air convection — no minimum load required
- ✓ Wide operating temperature: -30~+85℃
- ✓ Protections: Short circuit / Overload / Over voltage
- ✓ Safety approvals: UL62368-1, TUV EN62368, TUV EN60335-1, 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 Rating3 Watt
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Output Voltage3.3 Volt
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Rated Current0.9 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~85°C
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Warranty3 Year
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Length1.46 in
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Width0.94 in
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Height0.63 in
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Weight0.06 lb
::specification::
Frequently Asked Questions
Can I use the IRM-03-3.3S for a 3.3V embedded controller or processor board?
Yes, it provides a constant 3.3V output rated at 3W with 900mA available. That makes it suitable for embedded controller, processor, and logic boards that need an AC-input 3.3V rail within that current range.
Is the IRM-03-3.3S a fit for low-power industrial communication electronics?
It can be used for low-power communications electronics that run from 3.3V and stay within a 900mA load. The wide 85-305VAC input range is useful when the finished equipment may be used in more than one mains environment.
Can this model power 3.3V sensing or monitoring circuitry in automation equipment?
Yes, for sensing or monitoring sections that need a regulated 3.3V source and do not exceed 3W total demand. Its miniature encapsulated SMD style also helps where board area and low-profile integration matter.
Would the IRM-03-3.3S work in a compact smart device or control node?
Yes, it is well suited to compact smart devices or control nodes that need a modest 3.3V rail from AC input. The module measures 37.0 x 24.0 x 16.0 mm and weighs 0.026 kg, so it is aimed at compact internal integration rather than larger power stages.
Can the IRM-03-3.3S be used in outdoor equipment cabinets?
The operating temperature range of -30°C to +85°C supports a broad thermal envelope inside protected equipment. No IP rating is provided, so it is better used inside sealed or sheltered enclosures than in exposed outdoor locations.
How does the IRM-03-3.3S differ from other 3.3V IRM models?
In the 3.3V line, IRM-01-3.3 and IRM-01-3.3S are 1W and 300mA, IRM-02-3.3 and IRM-02-3.3S are 2W and 600mA, IRM-03-3.3 is 3W and 900mA, IRM-05-3.3 is 4.125W and 1.25A, IRM-10-3.3 is 8.25W and 2.5A, IRM-15-3.3 is 11.55W and 3.5A, and IRM-20-3.3 is 14.85W and 4.5A. The IRM-03-3.3S is the SMD-style 3W, 3.3V version in that family.
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