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Mean Well

Mean Well SPU03L-12 DC-DC Converter - 3W - 10.8~13.2V in 5V out

SKU SPU03L-12
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Overview

SPU03L-12 is the model of this series: rated power 3W, typical efficiency 85%.

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

SPU03L-12Specifications from the official datasheet (2024-08-02 edition)

OUTPUT

DC OUTPUT VOLTAGE
12V
CURRENT RANGE
25 ~ 250mA
EFFICIENCY (Typ.)
85%
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
4.5 ~ 5.5V
NORMAL VOLTAGE
5V
INPUT CURRENT Full load
715mA
INPUT CURRENT No load
65mA
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

SPU03L-12 Mechanical Specification
Mechanical Specification
SPU03L-12 Packing
Packing

Downloads

FAQ

Can I use the SPU03L-12 to power a 5V microcontroller section in industrial control electronics?

Yes, this model is a constant-voltage 12V output converter rated at 3W. It fits low-power embedded control, monitoring, or logic sections when the available input is 4.5~5.5V.

Is the SPU03L-12 suitable for a 5V sensor or interface circuit inside automation equipment?

It is designed for constant-voltage 12V output with a 3W power rating, which matches low-power 12V sensing or interface electronics. The 4.5~5.5V input range also aligns with applications built around that input window.

Can this converter be used in compact embedded boards with limited space?

Yes, the body is 19.6 × 10.2 × 7.5 mm and weighs 0.0029 kg, so it is sized for very compact electronics. That small footprint is useful in dense embedded, industrial, or IT control assemblies.

Would the SPU03L-12 fit a low-power 5V housekeeping rail in telecom or IT hardware?

For low-power 12V auxiliary electronics, the 3W constant-voltage output makes it a practical fit. It is intended for systems that provide 4.5~5.5V input and need a regulated 12V rail for control-level loads.

Can I use the SPU03L-12 in hot or cold equipment environments?

The specified operating temperature range is -40°C to +90°C. The provided specs do not list an IP rating, so the temperature range is defined but dust and water protection are not specified.

How does the SPU03L-12 compare with the other SPU03L models?

Within the SPU03L series, the SPU03L-12 is 3W with 12V output and listed 25~250mA output current. The SPU03L-05 is 3W with 5V output and listed 60~600mA output current, while the SPU03L-15 is 3W with 15V output and listed 20~200mA output current.

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Mean Well SPU03L-12 DC-DC Converter - 3W - 10.8~13.2V in 5V out
Mean Well

Mean Well SPU03L-12 DC-DC Converter - 3W - 10.8~13.2V in 5V out

Log in to see price

SPU03L-12 is the model of this series: rated power 3W, typical efficiency 85%.

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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