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Mean Well

Mean Well SPU03N-05 DC-DC Converter - 3W - 4.5~5.5V in 12V out

SKU SPU03N-05
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Overview

SPU03N-05 is the model of this series: rated power 3W, typical efficiency 83%.

Features

  • 3000VDC I/O isolation
  • Internal SMD technology
  • Built-in EMI filter
  • Protection: Short circuit
  • Cooling by free air convection
  • Non-conductive plastic case
  • Single in line package
  • 100% full load burn-in test
  • Low cost / High reliability
  • 2 years warranty

Specifications

SPU03N-05Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC OUTPUT VOLTAGE
5V
CURRENT RANGE
60 ~ 600mA
EFFICIENCY (Typ.)
83%
RATED POWER
3W
RIPPLE & NOISE (max.)Note.2
50mVp-p
LINE REGULATIONNote.3
±1.2% for 1% input variation
LOAD REGULATIONNote.4
±8.0%
VOLTAGE ACCURACY
±2.0%
SWITCHING FREQUENCY
60KHz min.

INPUT

VOLTAGE RANGE
21.6 ~ 26.4V
NORMAL VOLTAGE
24V
INPUT CURRENT Full load
155mA
INPUT CURRENT No load
15mA
FILTER
Capacitor type
PROTECTION
Fuse recommended

PROTECTION

OVERLOAD
Momentary Protection type : Broken
SHORT CIRCUIT
Momentary Protection type : Broken

ENVIRONMENT

WORKING TEMP.
-40 ~ +90℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +105℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03% / ℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
EAC TP TC 020/2011 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVDC
ISOLATION RESISTANCE
I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE
80pF max.
EMC EMISSION
Compliance to BS EN/EN55032 Class B, FCC part 15 Class B , EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8, light industry level, criteria A , EAC TP TC 020

OTHERS

MTBF
700khrs min. MIL-HDBK-217F(25℃)
DIMENSION
19.6*7.5*10.2mm or 0.77"*0.30"*0.40" inch (L*W*H)
PACKING
2.9g ; 25 pcs/per tube, 4000 pcs/ 160 tube/per carton
Test conditions and notes4
  1. 1.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
  2. 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
  3. 3.Line regulation is measured from low line to high line at rated load.
  4. 4.Load regulation is measured from 20% to 100% rated load.

Technical drawings

SPU03N-05 Mechanical Specification
Mechanical Specification
SPU03N-05 Packing
Packing

Downloads

FAQ

Can I use the SPU03N-05 to generate 5V for low-power industrial control or monitoring circuits from a 24V source?

Yes. This model provides a constant-voltage 5V output and is rated for 3W, so it fits low-power industrial control, monitoring, or signal-conditioning loads that need 5V within that power limit. Its specified input range is 21.6~26.4V.

Is the SPU03N-05 suitable for embedded boards that need a compact 5V rail from a 24V-class input?

It is designed for that kind of low-power conversion. The unit takes 21.6~26.4V input, delivers 5V constant voltage, and measures 19.6 x 7.5 x 10.2 mm, which supports space-constrained embedded designs. The 3W rating sets the load ceiling.

Can this converter be used in automation equipment with wide ambient temperature swings?

The operating temperature range is -40°C to +90°C, so it is specified for demanding automation environments with large temperature variation. It is still a 3W converter, so the application needs to stay within that output capacity. EAC TP TC 020/2011 safety approval and FCC Part 15 Class B compliance are listed.

Is the SPU03N-05 appropriate for outdoor or washdown environments?

The listed specs include an operating temperature range of -40°C to +90°C, but no IP rating is provided. That means the product page does not specify protection against water or dust exposure. Based on the listed data, temperature capability is defined, but enclosure protection is not.

How does the SPU03N-05 compare with the other SPU03N models?

All three listed SPU03N models are rated at 3W. The SPU03N-05 is specified as 21.6~26.4V in, 5V out, 60~600mA; the SPU03N-12 is listed as 3W, 12V, 25~250mA; and the SPU03N-15 is listed as 3W, 15V, 20~200mA. This model also shares the 19.6 x 7.5 x 10.2 mm size, -40°C to +90°C operating range, and 2-year warranty shown for the series entry.

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Mean Well SPU03N-05 DC-DC Converter - 3W - 4.5~5.5V in 12V out
Mean Well

Mean Well SPU03N-05 DC-DC Converter - 3W - 4.5~5.5V in 12V out

Log in to see price

SPU03N-05 is the model of this series: rated power 3W, typical efficiency 83%.

Features

  • 3000VDC I/O isolation
  • Internal SMD technology
  • Built-in EMI filter
  • Protection: Short circuit
  • Cooling by free air convection
  • Non-conductive plastic case
  • Single in line package
  • 100% full load burn-in test
  • Low cost / High reliability
  • 2 years warranty
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