Mean Well IRM-02-5S Switching Power Supply 2W 5V 400mA - Encapsulated | Mean Well

Name: Mean Well IRM-02-5S Switching Power Supply 2W 5V 400mA - Encapsulated
Brand: Mean Well
SKU: IRM-02-5S
Price: 7.47 USD
Availability: InStock

Overview

IRM-02-5S is the 5V output model of this series: rated current 400mA, rated power 2W, typical efficiency 70%. Type S: SMD style.

IRM-02 is a 2W miniature (33.7*22.2*15mm) 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 a universal input voltage range of 85~305Vac. The phenolic 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 77% and the extremely low no-load power consumption below 0.075W, IRM-02 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 module-type model, IRM-02 series also offers the SMD style model.

Features

Universal AC input / Full range
No load power consumption<0.075W
Compact size
Comply with BS EN/EN55032 Class B without any additional components
Wide operating temp. range -30~85℃
Protections: Short circuit / Overload / Over voltage
Cooling by free air convection
Isolation ClassⅡ
High reliability, low cost
3 years warranty

Specifications

IRM-02-5SSpecifications from the official datasheet (2025-11-21 edition)

OUTPUT

DC VOLTAGE: 5V
RATED CURRENT: 400mA
CURRENT RANGE: 0 ~ 400mA
RATED POWER: 2W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE TOLERANCE^Note.3: ±2.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 600ms, 30ms/230Vac 600ms, 30ms/115Vac at full load
HOLD UP TIME (Typ.): 40ms/230Vac 12ms/115Vac at full load

INPUT

VOLTAGE RANGE: 85 ~ 305Vac 120 ~ 430Vdc
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 70%
AC CURRENT (Typ.): 45mA/115Vac 30mA/230Vac 25mA/277Vac
INRUSH CURRENT (Typ.): 5A/115Vac 10A/230Vac
LEAKAGE CURRENT: < 0.25mA/277Vac

PROTECTION

OVERLOAD: ≥110% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 5.2 ~ 6.8V 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 ~ +100℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 75℃)
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.); Reflow soldering(SMD style): 240℃,10s (max.)

SAFETY & EMC

SAFETY STANDARDS: IEC62368-1,IEC61558-1/-2-16,UL62368-1,TUV BS EN/EN62368-1, BS EN/EN61558-1/-2-16,EAC TP TC 004, BSMI CNS15598-1 approved
OVER VOLTAGE CATEGORY: IEC/EN 61558-1/-2-16(OVC Ⅱ, altitude up to 2000m); IEC/EN/UL 62368-1(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: Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020, CNS15936 Class B
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, heavy industry level (surge L-N : 1KV), EAC TP TC 020

OTHERS

MTBF: 13571.4K hrs min. Telcordia SR-332 (Bellcore) ; 1960.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: PCB mounting style : 33.7*22.2*15mm (L*W*H) SMD style : 33.7*22.2*16mm (L*W*H)
PACKING: PCB mounting style : 0.024Kg; 640pcs/ 16.3 Kg/ 0.84CUFT SMD style : 0.024Kg; 640 pcs/ 16.3 Kg/ 0.84CUFT

Certifications & ratings

Marked features: LPS

MODEL ENCODING

Blank: PCB mounting style
S (this model): SMD style

Test conditions and notes4

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 0.1uf & 47uf 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).

Technical drawings

IRM-02-5S Mechanical Specification — Mechanical Specification

IRM-02-5S Recommended PCB Layout (for SMD — Recommended PCB Layout (for SMD

Typical applications

Industrial electrical equipment
Mechanical equipment
Factory automation equipment
Handheld electronic device

Downloads

Datasheet1

IRM-02-5S datasheetIRM-02-SPEC.PDF · 2025-11-21 edition PDF Download

Certificates4

EMC Certificate (IRM-02)(EN) PDF Download

UL Certificate (IRM-02)(EN) PDF Download

CB Certificate (IRM-02)(EN) PDF Download

TUV Certificate (IRM-02)(EN) PDF Download

Test reports1

Test Report (IRM-02-5)(EN) PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the IRM-02-5S to power a 5V embedded controller or single-board industrial interface?

Yes, this model is a 5V constant-voltage power supply rated at 2W with 85-305VAC input. It is suited to compact 5V embedded or interface electronics that remain within the unit's 2W capability.

Is the IRM-02-5S a fit for low-power 5V USB-level logic or peripheral circuitry inside equipment?

It can be a fit for low-power 5V logic and peripheral circuits used inside industrial or embedded equipment when the total demand stays within 2W. The SMD style favors surface-mount board designs rather than larger off-board 5V loads.

Can this power supply support a small 5V monitoring, HMI, or communications board?

Yes, for a small 5V board that needs constant-voltage output and does not exceed the 2W rating. The 33.7 × 22.2 × 16.0 mm package is useful in space-constrained control and monitoring products.

Would the IRM-02-5S work in a compact automation product with worldwide AC input requirements?

It can, because the input range is 85-305VAC and the output is regulated 5V constant voltage. That combination suits compact automation or embedded devices intended for broad AC input conditions, provided the load stays within 2W.

Is the IRM-02-5S suitable for outdoor control boxes or damp locations?

No IP rating or wet-location rating is provided for this model. The listed environmental figure is -30°C to +85°C operation, subject to the derating curve, so it is better suited for protected indoor enclosures than direct outdoor or washdown exposure.

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Mean Well IRM-02-5S Switching Power Supply 2W 5V 400mA - Encapsulated

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