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Mean Well

Mean Well EPS-15-3.3 Power Supply 10W 3.3V 3A

2.5" x 1.8"economical non-PFCno load power consumption<0.3W
SKU EPS-15-3.3
$9.83 USD
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In stock
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Overview

EPS-15-3.3 is the 3.3V output model of this series: rated current 3A, rated power 9.9W, typical efficiency 75%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 1.8"x2.5" compact size
  • No load power consumption<0.3W
  • Operating altitude up to 3000 meters
  • 3 years warranty

Specifications

EPS-15-3.3Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
3A
CURRENT RANGE
0 ~ 3.3A
RATED POWER
9.9W
PEAK LOAD(10sec.)Note.6
10.89W
RIPPLE & NOISE (max.)Note.2
50mVp-p
VOLTAGE ADJ. RANGE
3.1 ~ 3.6V
VOLTAGE TOLERANCENote.3
±2.0%
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 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
85 ~ 264VAC 120 ~ 370VDC [DC input operation possible by connecting AC/N(+), AC/L(-)]
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
75%
AC CURRENT (Typ.)
0.4A/115VAC 0.2A/230VAC
INRUSH CURRENT (Typ.)
COLD START 45A/230VAC
LEAKAGE CURRENT
<1mA/240VAC

PROTECTION

OVER LOAD
115 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
3.8 ~ 4.85V Protection type : Shut down o/p voltage, Clamping by zener diode

ENVIRONMENT

WORKING TEMP.
-30 ~ +70℃ (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℃)
OPERATING ALTITUDENote.7
3000 meters
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 4)

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, CCC GB4943.1 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG: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, GB9254 Class B, GB17625.1
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, heavy industry level, EAC TP TC 020

OTHERS

MTBF
6024.7K hrs min. Telcordia SR-332 (Bellcore) ; 849.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
63.5*45.7*24mm (L*W*H)
PACKING
0.057Kg; 120pcs/ 7.84Kg/0.94CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  5. 5. Derating may be needed under low input voltage. Please check the static characteristics for more details.
  6. 6. 33% Duty cycle maximum within every 30 seconds. Average output power should not exceed the rated power.
  7. 7. 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

EPS-15-3.3 Mechanical Specification
Mechanical Specification
EPS-15-3.3 Block Diagram
Block Diagram
EPS-15-3.3 Output Derating
Output Derating

Downloads

FAQ

Can I use the EPS-15-3.3 for a 3.3V control board or embedded controller?

Yes, this is a constant voltage 3.3V power supply rated for up to 3A and 9.9W. It fits embedded or industrial control electronics that require a regulated 3.3V rail and stay within that 3A output limit.

Is this power supply suitable for 3.3V sensors or low-power automation electronics?

It can be a fit for 3.3V automation electronics when the total load stays within 9.9W and 3A. The wide 85-264VAC input also makes it practical for equipment that may be deployed across different AC mains ranges.

Can I use this in a compact industrial or IT enclosure?

Yes, the board measures 63.5 x 45.7 x 24.0 mm and weighs 0.057 kg, so it is sized for compact internal equipment layouts. It is best matched to enclosed devices that need a 3.3V constant voltage supply rather than higher-voltage loads.

Will the EPS-15-3.3 work for small 3.3V logic or interface modules in automation equipment?

Yes, it is intended for low-power 3.3V loads and provides up to 3A from a constant voltage output. That makes it suitable for logic, interface, and controller modules that need 3.3V and do not exceed 9.9W.

Is the EPS-15-3.3 suitable for outdoor or harsh-temperature locations?

The published operating temperature range is -30C to +70C, with output derating at higher temperatures per the derating curve, so it covers a broad temperature span for installed equipment. No IP rating is listed in the provided specs, so outdoor or washdown suitability is not established here and it is better evaluated as an internal power supply for protected enclosures.

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Mean Well EPS-15-3.3 Power Supply 10W 3.3V 3A
Mean Well

Mean Well EPS-15-3.3 Power Supply 10W 3.3V 3A

$9.83 USD

EPS-15-3.3 is the 3.3V output model of this series: rated current 3A, rated power 9.9W, typical efficiency 75%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 1.8"x2.5" compact size
  • No load power consumption<0.3W
  • Operating altitude up to 3000 meters
  • 3 years warranty
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