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Mean Well RS-25-3.3 Power Supply 25W 3.3V 6A

4.8 (14 reviews)
miniature sizeeconomicalwithstand 5G vibration and 70Β°C operation
SKU RS-25-3.3
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Model

Select model β€” 7 in this family

RS-25-3.3
Available to order
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Overview

RS-25-3.3 is the 3.3V output model of this series: rated current 6A, rated power 19.8W, typical efficiency 73.5%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • LED indicator for power on
  • 100% full load burn-in test
  • All using 105℃ long life electrolytic capacitors
  • Withstand 300VAC surge input for 5 second
  • High operating temperature up to 70℃
  • Withstand 5G vibration test
  • No load power consumption<0.5W
  • High efficiency, long life and high reliability
  • 3 years warranty

Specifications

RS-25-3.3Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
6A
CURRENT RANGE
0 ~ 6A
RATED POWER
19.8W
RIPPLE & NOISE (max.)Note.2
80mVp-p
VOLTAGE ADJ. RANGE
2.85 ~ 3.6V
VOLTAGE TOLERANCENote.3
Β±3.0%
LINE REGULATIONNote.4
Β±0.5%
LOAD REGULATIONNote.5
Β±2.0%
SETUP, RISE TIME
1800ms, 23ms/230VAC 4000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)
80ms/230VAC 14ms/115VAC at full load

INPUT

VOLTAGE RANGE
88 ~ 264VAC 125 ~ 373VDC (Withstand 300VAC surge for 5sec. Without damage)
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY(Typ.)
73.5%
AC CURRENT (Typ.)
0.7A/115VAC 0.4A/230VAC
INRUSH CURRENT (Typ.)
COLD START 45A/230VAC
LEAKAGE CURRENT
<2mA / 240VAC

PROTECTION

OVERLOAD
110 ~ 180% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
3.8 ~ 4.45V Protection type : Shut off o/p voltage, clamping by zener diode

ENVIRONMENT

WORKING TEMP.
-20 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
Β±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note 6)

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1 , AS/NZS 62368.1 , EAC TP TC 004, CCC GB4943 .1, BSMI CNS15598-1, BIS IS13252(Part1):2010/IEC 60950-1:2005 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 class B,GB17625.1, 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, light industry level, EAC TP TC 020

OTHERS

MTBF
3992.0K hrs min. Telcordia SR-332 (Bellcore) ; 663.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
78*51*28mm (L*W*H)
PACKING
0.2Kg; 60pcs/13Kg/0.46CUFT
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 0.1ΞΌF & 47ΞΌF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Line regulation is measured from low line to high line at rated load.
  5. 5. Load regulation is measured from 0% to 100% rated load.
  6. 6. 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 β€œEMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  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

RS-25-3.3 Mechanical Specification
Mechanical Specification
RS-25-3.3 Block Diagram
Block Diagram
RS-25-3.3 Derating Curve
Derating Curve

Downloads

FAQ

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

Yes, if the board requires a 3.3V constant voltage supply and draws no more than 6A or 19.8W. That makes it appropriate for embedded controllers, logic assemblies, and similar 3.3V electronics within that output range.

Is the RS-25-3.3 suitable for industrial electronics built around 3.3V logic?

It is designed for 3.3V constant voltage loads and can deliver up to 6A. For industrial electronics using 3.3V logic rails with moderate current demand, it is a fit as long as the total load stays under 19.8W.

Can this power supply run a small embedded gateway, communications board, or processor platform that uses 3.3V?

It can support compact 3.3V embedded platforms if their power draw is within 6A and 19.8W. The 88-264VAC input is also useful where the equipment may be deployed across different AC mains ranges.

Is the RS-25-3.3 appropriate for compact electronics where space is limited?

The enclosure measures 78.0 x 51.0 x 28.0 mm and weighs 0.2 kg, which helps in smaller equipment layouts. It combines that compact size with a 3.3V output rated up to 6A.

Can the RS-25-3.3 be used outside or in exposed industrial areas?

The operating temperature range is listed as -20 degrees C to +70 degrees C, so the temperature specification is provided. However, no IP rating is stated, so the supplied specs do not confirm suitability for outdoor exposure, dust ingress, or washdown conditions.

How does the RS-25-3.3 compare with other RS-25 models?

The RS-25 series includes RS-25-3.3 at 19.8W, 3.3V, 6A; RS-25-5 at 25W, 5V, 5A; RS-25-12 at 25.2W, 12V, 2.1A; RS-25-15 at 25.5W, 15V, 1.7A; RS-25-24 at 26.4W, 24V, 1.1A; and RS-25-48 at 27.36W, 48V, 0.57A. This 3.3V version provides the highest current in the RS-25 group, while its total wattage is 19.8W.

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Customer reviews

4.8 Reviews verified for authenticity
5 β˜… (12)
4 β˜… (1)
3 β˜… (1)
2 β˜… (0)
1 β˜… (0)

Reviewed by 14 customers across the RS series

  1. Exactly as specced

    By Daniel R.|2026-06-18βœ“ Verified Buyer
    Model: RS-15-24Quantity: 4

    Drop-in replacement, ran cool under full load on our DIN rail. Shipped same day.

  2. Workhorse

    By Maria K.|2026-05-28βœ“ Verified Buyer
    Model: RS-50-24Quantity: 12

    Bought a dozen for a control panel build β€” every one perfect.

  3. Solid little supply

    By Greg T.|2026-04-30βœ“ Verified Buyer
    Model: RS-100-24Quantity: 2

    Does the job. Wish the terminals were a touch bigger.

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Mean Well RS-25-3.3 Power Supply 25W 3.3V 6A
Mean Well

Mean Well RS-25-3.3 Power Supply 25W 3.3V 6A

RS-25-3.3 is the 3.3V output model of this series: rated current 6A, rated power 19.8W, typical efficiency 73.5%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • LED indicator for power on
  • 100% full load burn-in test
  • All using 105℃ long life electrolytic capacitors
  • Withstand 300VAC surge input for 5 second
  • High operating temperature up to 70℃
  • Withstand 5G vibration test
  • No load power consumption<0.5W
  • High efficiency, long life and high reliability
  • 3 years warranty

Model

  • 15W 3.3V
  • 100W 3.3V
  • 150W 3.3V
  • 25W 3.3V
  • 35W 3.3V
  • 50W 3.3V
  • 75W 3.3V
View product