Mean Well IRM-45-5 40W 5V 8A Switching Power Supply - Encapsulated

Name: Mean Well IRM-45-5 Switching Power Supply 40W 5V 8A - Encapsulated
Brand: Mean Well
SKU: IRM-45-5
Price: 17.06 USD
Availability: InStock

Overview

IRM-45-5 is the 5V output model of this series: rated current 8A, rated power 40W, typical efficiency 83.5%. Type Blank: PCB mounting style.

IRM-45 is a 45W miniature (87*52*29.5mm) 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 85~305Vac. The 94V-0 flame retardant plastic case and potted with silicone enhance the heat dissipation. PCB mounting style model(Blank) meet the anti-vibration demand up to 2G and screw terminal style model (ST) meet the anti-vibration demand up to 5G; moreover, it provides the fundamental resistance to dust and moisture. With the high efficiency up to 90.5% and the extremely low no-load power consumption below 0.15W, IRM-45 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. In addition to the PCB mounting style model, IRM-45 series also offers the screw terminal style model (ST).

Features

3.43''x2.05''compact size
PCB,chassis or screw terminal mounting version
Universal input 85~305Vac
No load power consumption<0.15W
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(Except for 5V)
3 years warranty

Specifications

IRM-45-5Specifications from the official datasheet (2025-11-21 edition)

OUTPUT

DC VOLTAGE: 5V
RATED CURRENT: 8A
CURRENT RANGE: 0 ~ 8A
RATED POWER: 40W
RIPPLE & NOISE (max.)^Note.2: 80mVp-p
VOLTAGE TOLERANCE^Note.3: ±2.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1000ms, 30ms/230Vac 2000ms, 30ms/115Vac at full load
HOLD UP TIME (Typ.): 50ms/230Vac 12ms/115Vac at full load

INPUT

VOLTAGE RANGE: 85 ~ 305Vac
FREQUENCY RANGE: 47 ~ 440Hz
EFFICIENCY (Typ.): 83.5%
AC CURRENT (Typ.): 1.5A/115Vac 0.9A/230Vac 0.75A/277Vac
INRUSH CURRENT (Typ.): COLD START 30A/115Vac 60A/230Vac
LEAKAGE CURRENT: < 0.25mA/277Vac

PROTECTION

OVERLOAD: 115%~160% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 5.25 ~ 6.75V 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: Blank:10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes ST: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.4: 2000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC62368-1,IEC61558-1/-2-16,UL62368-1,TUV BS EN/EN62368-1,BS EN/EN60335-1,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 Ⅲ, altitude up to 2000m); IEC/EN 60335-1(OVC Ⅱ,altitude up to 2000m)
WITHSTAND VOLTAGE: I/P-O/P:4.2KVac
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: 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^Note.5: 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 4, 2KV/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 4, 2KV/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: 6451.1K hrs min. Telcordia SR-332 (Bellcore) ; 1212.1K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: PCB mounting style : 87*52*29.5mm (L*W*H) Screw terminal style : 109*52*33.5mm (L*W*H)
PACKING: PCB mounting style : 0.195Kg;60pcs/12.7Kg/0.94CUFT Screw terminal style :0.228Kg; 50pcs/12.4Kg/0.56CUFT

MODEL ENCODING

Blank (this model): PCB mounting style
ST: Screw terminal style

Test conditions and notes5

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. 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).
5. The power supply is considered as an independent unit ,but the final equipment still need to re-confirm that the whole system complieswith 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-45-5 Derating Curve — Derating Curve

IRM-45-5 Mechanical Specification — Mechanical Specification

Typical applications

Industrial electrical equipment
Mechanical equipment
Factory automation equipment
Handheld electronic device

Downloads

Datasheet1

IRM-45-5 datasheetIRM-45-SPEC.PDF · 2025-11-21 edition PDF Download

Certificates4

EMC Certificate (IRM-45)(EN) PDF Download

UL Certificate (IRM-45)(EN) PDF Download

CB Certificate (IRM-45)(EN) PDF Download

TUV Certificate (IRM-45)(EN) PDF Download

Test reports1

Test Report(IRM-45-5)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the IRM-45-5 for a 5V embedded computer or SBC system?

Yes, it provides constant 5V output up to 8A and 40W, which suits embedded computers, controller boards, and similar 5V electronics that need more current than small adapter supplies can provide. It is intended for loads that stay within that 8A output limit.

Is the IRM-45-5 suitable for powering 5V industrial logic or microcontroller circuits?

Yes, this model fits 5V industrial logic, microcontroller, and interface circuits that need a regulated 5V rail and draw up to 8A. Its encapsulated PCB mounting style also makes it practical for built-in power sections on control boards.

Can this power supply support a 5V test fixture or automation electronics assembly?

It can, as long as the combined 5V load does not exceed 40W or 8A. That makes it appropriate for 5V test fixtures, embedded development rigs, or compact automation electronics with higher current demand than 1A to 4A class supplies.

Is the IRM-45-5 meant for outdoor use?

The operating temperature range is -30°C to +85°C, with load derating at higher temperatures, which is suitable for a broad range of protected equipment environments. No IP rating is listed, so it should be used inside an enclosure rather than in exposed outdoor or wet locations.

How does the IRM-45-5 compare with other IRM-45 models?

In the IRM-45 group, the outputs are IRM-45-5 at 40W, 5V, 8A; IRM-45-12 at 45.6W, 12V, 3.8A; IRM-45-15 at 45W, 15V, 3A; IRM-45-24 at 45.6W, 24V, 1.9A; and IRM-45-48 at 45.12W, 48V, 0.94A. Matching ST versions are available for each output, and this IRM-45-5 is the PCB mounting style 5V option.

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Mean Well IRM-45-5 Switching Power Supply 40W 5V 8A - Encapsulated

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Overview

Features

Specifications

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INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

MODEL ENCODING

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates4

Test reports1

Catalogues1

FAQ

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Mean Well IRM-45-5 Switching Power Supply 40W 5V 8A - Encapsulated

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