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Mean Well

Mean Well EPS-25-3.3 Power Supply 16W 3.3V 5A

3" x 2"economical non-PFCsmall sizehigh efficiency
SKU EPS-25-3.3
$15.21 USD
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In stock
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Overview

EPS-25-3.3 is the 3.3V output model of this series: rated current 5A, rated power 16.5W, typical efficiency 79%.

Features

  • Universal AC input / Full range
  • High efficiency up to 90%
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 3"×2" compact size
  • LED indicator for power on
  • No load power consumption<0.3W
  • 3 years warranty

Specifications

EPS-25-3.3Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
5A
CURRENT RANGE
0 ~ 5.5A
RATED POWER
16.5W
PEAK LOAD(10sec.)Note.6
18.15W
RIPPLE & NOISE (max.)Note.2
60mVp-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 1000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)
50ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
79%
AC CURRENT (Typ.)
0.6A/115VAC 0.4A/230VAC
INRUSH CURRENT (Typ.)
COLD START 35A/230VAC
LEAKAGE CURRENT
<1mA/240VAC

PROTECTION

OVER LOAD
115 ~ 170% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
3.7 ~ 4.6V Protection type : Shut down o/p voltage, re-power on to recover

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.8
2000 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, CCC GB4943.1,EAC TP TC 004 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, GB9254.1 Class B,GB17625 Class A,EAC TP TC 020
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
3830.1K hrs min. Telcordia SR-332 (Bellcore) ; 655.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
76.2*50.8*24mm (L*W*H)
PACKING
0.081Kg; 120pcs/10.7Kg/0.94CUFT
Test conditions and notes8
  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. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets 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 )
  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. EPS-25-15/24/27/36/48 without Hs1.
  8. 8. 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-25-3.3 Mechanical Specification
Mechanical Specification
EPS-25-3.3 Block Diagram
Block Diagram
EPS-25-3.3 Output Derating
Output Derating

Downloads

FAQ

Can I use the EPS-25-3.3 to power a 3.3V embedded controller or logic board?

It can be used for 3.3V embedded or logic circuits when the load stays within 16.5W and 5A. Because it is a constant voltage 3.3V model, it is intended for electronics that require a regulated 3.3V input.

Is the EPS-25-3.3 suitable for industrial communication boards or processor-based modules that run on 3.3V?

Yes, it can fit processor boards, communication modules, or digital electronics designed for a fixed 3.3V supply, provided the total draw does not exceed 5A. The available current is relatively high for this voltage class, but the total power remains 16.5W.

Can this power supply be used in a low-voltage automation or test system with 3.3V electronics?

It can work in low-voltage automation electronics or test fixtures where the 3.3V rail is the required output and the load remains within 16.5W. Its compact 76.2 x 50.8 x 24.0 mm size also helps in space-limited equipment.

Is the EPS-25-3.3 designed for indoor or sealed-enclosure use?

The listed operating temperature range is -30°C to +70°C, but no IP rating is provided in the specs. That means the temperature capability is defined, while environmental sealing is not, so it should be used where the host enclosure provides the needed protection.

How does the EPS-25-3.3 compare with other EPS-25 output options?

In the EPS-25 family, the models are EPS-25-3.3 at 16.5W, 3.3V, 5A; EPS-25-5 at 25W, 5V, 5A; EPS-25-7.5 at 25.5W, 7.5V, 3.4A; EPS-25-12 at 25.2W, 12V, 2.1A; EPS-25-15 at 25.5W, 15V, 1.7A; EPS-25-24 at 25.2W, 24V, 1.05A; EPS-25-27 at 25.65W, 27V, 0.95A; EPS-25-36 at 25.2W, 36V, 0.7A; and EPS-25-48 at 25.44W, 48V, 0.53A. The 3.3V version is the lowest-voltage option in this group and correspondingly offers 5A at 16.5W.

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Mean Well EPS-25-3.3 Power Supply 16W 3.3V 5A
Mean Well

Mean Well EPS-25-3.3 Power Supply 16W 3.3V 5A

$15.21 USD

EPS-25-3.3 is the 3.3V output model of this series: rated current 5A, rated power 16.5W, typical efficiency 79%.

Features

  • Universal AC input / Full range
  • High efficiency up to 90%
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 3"×2" compact size
  • LED indicator for power on
  • No load power consumption<0.3W
  • 3 years warranty
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