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Mean Well SPU03L-12 DC-DC Converter - 3W - 10.8~13.2V in 5V out
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
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.All parameters are specified at normal input, rated load, 25℃ 70% RH ambient.
- 2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
- 3.Line regulation is measured from low line to high line at rated load.
- 4.Load regulation is measured from 20% to 100% rated load.
Technical drawings
Downloads
Certificates4
Test reports1
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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