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Mean Well IRM-03-3.3 Switching Power Supply 3W 3.3V 900mA - Encapsulated

miniature encapsulated typePCB mouting style

SKU:

IRM-03-3.3

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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

Frequently Asked Questions

Can I use the IRM-03-3.3 to power a 3.3V microcontroller or embedded logic board?

Yes, this model is designed for a 3.3V constant-voltage output and is rated at 3W with 900mA available. That suits many embedded control, logic, and processor boards that need an AC-input power module for a 3.3V rail.

Is the IRM-03-3.3 suitable for an industrial IoT or communications module?

It can be suitable where the module requires a regulated 3.3V supply and the total draw stays within 900mA. The 85-305VAC input range also helps when the end equipment may be used across different mains systems.

Can this power supply be used on a PCB for compact instrumentation electronics?

Yes, the PCB mounting style and 37.0 x 24.0 x 15.0 mm size make it practical for compact embedded and instrumentation assemblies. Its 3.3V, 3W output is best matched to low-power digital sections rather than heavier peripheral loads.

Would the IRM-03-3.3 work for 3.3V control electronics inside an automation product?

Yes, it is a reasonable choice for internal 3.3V control electronics that need isolated AC-to-DC conversion at modest power levels. The 3W output and 900mA rating fit low-power control, sensing, and communications sections inside automation equipment.

Is the IRM-03-3.3 meant for indoor or outdoor equipment?

The operating range is -30°C to +85°C, which supports use in equipment that sees a wide temperature span. Since no IP rating is listed, it should be treated as a power module for protected indoor or enclosed applications rather than exposed outdoor environments.

How does the IRM-03-3.3 compare with the other 3.3V models in the IRM family?

The 3.3V series steps up from IRM-01-3.3 and IRM-01-3.3S at 1W and 300mA, to IRM-02-3.3 and IRM-02-3.3S at 2W and 600mA, then IRM-03-3.3S at 3W and 900mA, followed by IRM-05-3.3 at 4.125W and 1.25A, IRM-10-3.3 at 8.25W and 2.5A, IRM-15-3.3 at 11.55W and 3.5A, and IRM-20-3.3 at 14.85W and 4.5A. The IRM-03-3.3 is the 3W PCB-mount 3.3V option in that progression.

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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

Mean Well IRM-03-3.3 Switching Power Supply 3W 3.3V 900mA - Encapsulated

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Mean Well IRM-03-3.3 Switching Power Supply 3W 3.3V 900mA - Encapsulated

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