IRM Series IRM-10-3.3 Power Supply - Open Frame Type

Name: Mean Well IRM-10-3.3 Switching Power Supply 8.25W 3.3V 2.5A - Encapsulated
Brand: Mean Well
SKU: IRM-10-3.3
Price: 9.53 USD
Availability: InStock

Overview

IRM-10-3.3 is the 3.3V output model of this series: rated current 2.5A, rated power 8.25W, typical efficiency 74%.

IRM-10 is a 10W miniature (45.7*25.4*21.5mm) AC-DC module-type power supply, ready to be soldered onto the PCB boards of various kinds of electronic instruments or industrial automation equipments. This product allows the universal input voltage range of 85~ 305 Vac. The 94V-0 flame retardant plastic case and potted with silicone enhance the heat dissipation and meet the anti-vibration demand up to 5G; moreover, it provides the fundamental resistance to dust and moisture. With the high efficiency up to 82% and the extremely low no-load power consumption below 0.1W, IRM-10 series fulfills the worldwide regulation for the low power consumption requirement for electronics. The entire series is a Class Ⅱ design (no FG pin), incorporating the built-in EMI filtering components, enabling the compliance with BS EN/EN55032 Class B; the supreme EMC features keep the end electronic units from electromagnetic interference.

Features

1.8''x1''compact size
Universal input 85~305Vac
No load power consumption<0.1W
EMI Class B without additional components
Wide operating temp. range -30~85℃
Protections: Short circuit / Overload / Over voltage
Cooling by free air convection
Isolation Class Ⅱ
Over voltage category Ⅲ (OVC Ⅲ)
Pass LPS
3 years warranty

Specifications

IRM-10-3.3Specifications from the official datasheet (2025-08-08 edition)

OUTPUT

DC VOLTAGE: 3.3V
RATED CURRENT: 2.5A
CURRENT RANGE: 0 ~ 2.5A
RATED POWER: 8.25W
RIPPLE & NOISE (max.)^Note.2: 200mVp-p
VOLTAGE TOLERANCE^Note.3: ±2.5%
LINE REGULATION: ±0.3%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME^Note.4: 600ms, 30ms at full load
HOLD UP TIME (Typ.): 30ms/230Vac 8ms/115Vac at full load

INPUT

VOLTAGE RANGE: 85 ~ 305Vac 120 ~ 430Vdc
FREQUENCY RANGE: 47 ~ 440Hz
EFFICIENCY (Typ.): 74%
AC CURRENT (Typ.): 0.25A/115Vac 0.15A/230Vac 0.125A/277Vac
INRUSH CURRENT (Typ.): COLD START 20A/115Vac 40A/230Vac
LEAKAGE CURRENT: < 0.25mA/277Vac

PROTECTION

OVERLOAD: 115%~190% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 3.8 ~ 4.95V Protection type : Shut off o/p voltage, clamping by zener diode

ENVIRONMENT

WORKING TEMP.: -30 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes
SOLDERING TEMPERATURE: Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.)
OPERATING ALTITUDE^Note.5: 2000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC62368-1,IEC61558-1/-2-16,UL62368-1,TUV BS EN/EN62368-1,TUV BS EN/EN61558-1/-2-16,EAC TP TC 004, BSMI CNS15598-1 approved
OVER VOLTAGE CATEGORY: IEC/EN 61558-1/-2-16(OVC Ⅲ, altitude up to 2000m); IEC/EN/UL 62368-1(OVC Ⅱ, altitude up to 5000m)
WITHSTAND VOLTAGE: I/P-O/P:4.2KVac
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION^Note.6: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32), CNS15936 Class B
Radiated BS EN/EN55032(CISPR32), CNS15936 Class B
Harmonic Current (Note 5) BS EN/EN61000-3-2 Class A
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035, BS EN/EN61000-6-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility BS EN/EN61000-4-3 Level 3, criteria A
EFT/Burest BS EN/EN61000-4-4 Level 3, criteria A
Surge BS EN/EN61000-4-5 Level 3,1KV/L-N, criteria A
Conducted BS EN/EN61000-4-6 Level 3, criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, criteria A
Voltage Dips and interruptions BS EN/EN61000-4-11 ＞95% dip 0. 5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32), CNS15936	Class B
Radiated	BS EN/EN55032(CISPR32), CNS15936	Class B
Harmonic Current (Note 5)	BS EN/EN61000-3-2	Class A
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility	BS EN/EN61000-4-3	Level 3, criteria A
EFT/Burest	BS EN/EN61000-4-4	Level 3, criteria A
Surge	BS EN/EN61000-4-5	Level 3,1KV/L-N, criteria A
Conducted	BS EN/EN61000-4-6	Level 3, criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, criteria A
Voltage Dips and interruptions	BS EN/EN61000-4-11	＞95% dip 0. 5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

OTHERS

MTBF: 9094.9K hrs min. Telcordia SR-332 (Bellcore) ; 1495.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 45.7*25.4*21.5 mm (L*W*H)
PACKING: 0.033Kg;270pcs/ 9.8Kg/0.94CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
3. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
5. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
6. The power supply is considered as an independent unit ,but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )

Technical drawings

IRM-10-3.3 Block Diagram — Block Diagram

IRM-10-3.3 Derating Curve — Derating Curve

Typical applications

Industrial electrical equipment
Mechanical equipment
Factory automation equipment
Hand-held electronic device

Downloads

Datasheet1

IRM-10-3.3 datasheetIRM-10-SPEC.PDF · 2025-08-08 edition PDF Download

Certificates4

EMC Certificate (IRM-10)(EN) PDF Download

UL Certificate (IRM-10)(EN) PDF Download

CB Certificate (IRM-10)(EN) PDF Download

TUV Certificate (IRM-10)(EN) PDF Download

Test reports1

Test Report(IRM-10-3.3)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What output does the Mean Well IRM-10-3.3 provide?

The IRM-10-3.3 is a 3.3V AC/DC switching power supply rated for 2.5A output current. Its maximum power rating is 8.25W, making it suitable for low-power embedded and PCB-based equipment that requires a regulated 3.3V supply.

What input voltage range does the IRM-10-3.3 support?

This model accepts a universal AC input range of 85 to 305VAC and also supports 120 to 430VDC input. That wide range helps it fit equipment intended for different regional mains standards without needing a separate input-specific version.

What kinds of applications is the IRM-10-3.3 best suited for?

The IRM-10-3.3 is designed for compact, board-level AC/DC power conversion in space-constrained equipment. Its encapsulated construction, miniature size, and 3.3V output make it a practical option for industrial electronics, control boards, and other low-power OEM applications.

What protection features are included in the Mean Well IRM-10-3.3?

This power supply includes short circuit, overload, and over voltage protection. The listed overload protection range is 115% to 190% of rated output power, and over voltage protection is specified at 3.8V to 4.95V on the 3.3V output.

How does the IRM-10-3.3 compare with larger open frame power supplies?

The IRM-10-3.3 is intended for lower-power applications where compact size and PCB integration matter more than higher wattage. Compared with larger open frame supplies, it offers a much smaller 45.7 x 25.4 x 21.5 mm form factor and 8.25W output, which is better suited to compact embedded designs.

Is the IRM-10-3.3 designed for low standby power and passive cooling?

Yes. Mean Well specifies no-load power consumption below 0.1W, and the unit is cooled by free air convection, so it does not require active fan cooling under normal operating conditions.

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Mean Well IRM-10-3.3 Switching Power Supply 8.25W 3.3V 2.5A - Encapsulated

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Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates4

Test reports1

Catalogues1

FAQ

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Mean Well IRM-10-3.3 Switching Power Supply 8.25W 3.3V 2.5A - Encapsulated

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