Over 15 years experience of providing support of MEAN WELL Power Supplies
Mean Well SCW03B-05 DC-DC Converter - 3W 18~36V DC in 5V out 600mA
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SCW03B-05 is the 5V output model of this series: rated power 3W, typical efficiency 75%.
Features
- 2:1 wide input range
- 4:1 wide input range(option)
- 1000VDC I/O isolation
- 3000VDC I/O isolation(option)
- Built-in EMI filter
- Protections: Short circuit / Overload
- Cooling by free air convection
- Five-sided shield metal case
- 100% burn-in test
- Low cost / High reliability
- Approvals: FCC / CE
- 2 years warranty
Specifications
OUTPUT
- DC VOLTAGE
- 5V
- CURRENT RANGE
- 60 ~ 600mA
- RATED POWER
- 3W
- RIPPLE & NOISE (max.)Note.2
- 50mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- ±0.5%
- VOLTAGE ACCURACY
- ±2.0%
- SWITCHING FREQUENCY
- 50KHz min.
INPUT
- VOLTAGE RANGE
- 18 ~ 36VDC
- EFFICIENCY (Typ.)
- 75%
- DC CURRENT Full load
- 167mA
- DC CURRENT No load
- 10mA
- FILTER
- Pi network
- PROTECTION
- Fuse recommended
PROTECTION (Note. 5)
- OVERLOAD
- 160 ~ 250% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- SHORT CIRCUIT
- All output equipped with short circuit Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -40 ~ +71℃ (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 004 approved
- WITHSTAND VOLTAGE
- I/P-O/P:1KVDC
- ISOLATION RESISTANCE
- I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
- ISOLATION CAPACITANCE
- 80pF max.
- EMC EMISSION
- Compliance to EN55032 Class B, FCC part 15 Class B , EAC TP TC 020
- EMC IMMUNITY
- Compliance to EN61000-4-2,3,4,5,6,8, light industry level, criteria A , EAC TP TC 020
OTHERS
- MTBF
- 900khrs min. MIL-HDBK-217F(25℃)
- DIMENSION
- 31.8*20.3*12.2mm or 1.25"*0.80"*0.48" inch (L*W*H)
- WEIGHT
- 15g
Test conditions and notes5
- 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 10% to 100% rated load.
- 5.Please prevent the converter from operating in overload or short circuit condition for more than 30 seconds.
Technical drawings
Downloads
Datasheet1
Certificates3
FAQ
What is the main function of the Mean Well SCW03B-05?
The SCW03B-05 is a 3W DC-DC converter designed to take an 18 to 36V DC input and provide a regulated 5V DC output. It is intended for applications that need isolated DC power conversion in a compact 31.8 x 20.3 x 12.2mm metal-case package.
What are the input and output ratings for this model?
This model accepts a 2:1 input range of 18 to 36V DC and delivers a 5V DC output. Its rated output current is 0.6A, with a total power rating of 3W.
What protections are included in the SCW03B-05?
The SCW03B-05 includes short circuit protection and overload protection (160 to 250% of rated output power), both in hiccup mode with automatic recovery once the fault is removed. These built-in protections help support reliable operation in industrial and embedded power designs.
Is the SCW03B-05 suitable for demanding temperature environments?
Yes, this converter is specified for operation from -40°C up to +71°C, with output derating at higher temperatures according to the datasheet's derating curve. Buyers should confirm the intended operating conditions against the full datasheet limits for their application.
Does this converter require a minimum load to regulate properly?
Yes, the SCW03B-05 is specified for an output current range of 60 to 600mA, so the load should draw at least 60mA (10% of rated load). Load regulation of ±0.5% is specified from 10% to 100% of rated load.
What makes the SCW03B-05 a practical choice for compact OEM designs?
This model measures just 31.8 x 20.3 x 12.2mm, weighs 15g and offers 1KVDC input-to-output isolation, which can be important in space-constrained equipment. It has a typical efficiency of 75%, a five-sided shielded metal case and a built-in EMI filter for low-power DC conversion applications.
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Other SCW03 Models
8 other models| Model | Power | Voltage | Current | IP Rating | |
|---|---|---|---|---|---|
| Mean Well SCW03C-15 DC-DC Converter - 3W 36~72V DC in 15V out | 3W | 15V | 0.2A | — | View |
| Mean Well SCW03C-12 DC-DC Converter - 3W 36~72V DC in 12V out | 3W | 12V | 0.25A | — | View |
| Mean Well SCW03C-05 DC-DC Converter - 3W 36~72V DC in 5V out | 3W | 5V | 0.6A | — | View |
| Mean Well SCW03B-15 DC-DC Converter - 3W 18~36V DC in 15V out | 3W | 15V | 0.2A | — | View |
| Mean Well SCW03B-12 DC-DC Converter - 3W 18~36V DC in 12V out 250mA | 3W | 12V | 0.25A | IP20 | View |
| Mean Well SCW03A-15 DC-DC Converter - 3W 9~18V DC in 15V out | 3W | 15V | 0.2A | — | View |
| Mean Well SCW03A-12 DC-DC Converter - 3W 9~18V DC in 12V out | 3W | 12V | 0.25A | — | View |
| Mean Well SCW03A-05 DC-DC Converter - 3W 9~18V DC in 5V out 600mA | 3W | 5V | 0.6A | IP20 | View |
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