Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well IRM-03-9 Switching Power Supply 3W 9V 333mA - Encapsulated
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 Voltage9 Volt
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Rated Current0.33 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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Height0.59 in
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Weight0.06 lb
::specification::
Frequently Asked Questions
Can I use the IRM-03-9 for a 9V control or signal-processing circuit?
Yes, it provides a constant 9V output rated at 3W with 333mA available. That suits low-power 9V control, signal-processing, or interface circuits that stay within a 333mA load range.
Is the IRM-03-9 suitable for compact test or measurement electronics?
It can be a fit for compact test and measurement electronics that need a regulated 9V rail from AC input. The 3W rating makes it appropriate for modest-power analog or control sections rather than larger 9V loads.
Can this 9V model be used in embedded monitoring equipment?
Yes, if the monitoring electronics are designed around a 9V constant-voltage supply and do not exceed 333mA. The wide 85-305VAC input range is useful for embedded equipment intended for more than one mains standard.
Would the IRM-03-9 work on a PCB in a space-limited industrial device?
Yes, the PCB mounting style and compact 37.0 x 24.0 x 15.0 mm package support internal integration on space-limited boards. With 3W available, it is aimed at low-power 9V circuitry inside industrial or embedded products.
Can the IRM-03-9 handle cold or hot operating environments?
The specified operating temperature range is -30°C to +85°C, which supports use in equipment exposed to a broad temperature window. No IP rating is listed, so it is best used inside protected housings instead of exposed outdoor environments.
How does the IRM-03-9 compare with the other 9V models in the series?
For 9V output, the IRM line includes IRM-01-9 and IRM-01-9S at 1W and 111mA, IRM-02-9 and IRM-02-9S at 2W and 222mA, and IRM-03-9S at 3W and 333mA. The IRM-03-9 is the 3W PCB-mount 9V option at the top of that low-power 9V group.
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