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Mean Well DCW03A-05 DC-DC Converter - 3W - 9~18V in ±5V out

SKU:

DCW03A-05

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Description

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

Protection: Short circuit / Overload

Cooling by free air convection

Five-sided shield metal case

100% full load burn-in test

Low cost, high reliability

2 years warranty

General Specification

Voltage set point accuracy	± 2% (max.)
Line regulation	± 0.5% (max.)
Load regulation	± 0.5% (max.) @ 10 ~ 100% load
Overload protection	160% to 250%, auto-recovery
Efficiency	82% (typical)
Short circuit protection	Continuous, auto-recovery
I / O isolation voltage	1000VDC (min.)
I / O isolation resistance	100MQ(min.)@500VDC
Isolation capacitance	80pF (max.)
Working temperature	-40 ~ + 71°C (refer to output derating curve)
Storage temperature	-40°C to + 105°C
EMC	Compliance to EN55022 class B, EN61000-4-2,3,4,5,6,8, FCC part15 class B
Temp. Coefficient	± 0.03% / ° C (max.)
Dimension (LxWxH) (mm)	1.25 ""x 0.8"" x 0.48 ""
Case material	Five-sided shield metal case

Specifications

Brand

Mean Well
Series

DCW Series
Power Rating

3 Watt
Output Voltage

5 Volt
Rated Current

0.3 Ampere
Input Voltage

9V~18V
Standards Met

CE,EMC,FCC
Operation Mode

Constant Voltage
Operating Temperature

-40°C~71°C
Warranty

2 Year
Length

3.18 cm
Width

2.03 cm
Height

1.22 cm
Weight

0.02 kg

File Downloads

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Frequently Asked Questions

What is the Mean Well DCW03A-05 designed for?

The DCW03A-05 is a 3W DC-DC converter intended for applications that need regulated dual output power from a DC source. This model accepts 9 to 18V DC input and provides a ±5V DC output, which makes it suitable for compact embedded and industrial electronics that require isolated onboard power conversion.

What are the key electrical specifications of the DCW03A-05?

This model is rated for 3W output power with a ±5V output and a listed rated current of 300mA. It has a typical efficiency of 82%, voltage set point accuracy of up to ±2%, and line and load regulation of up to ±0.5% max.

Does the DCW03A-05 provide input-to-output isolation?

Yes. The DCW03A-05 provides a minimum 1000V DC input-to-output isolation rating, with a minimum isolation resistance of 100MΩ at 500V DC. This can help where electrical isolation is required between the input source and the powered circuit.

What protection features are included in this DC-DC converter?

The DCW03A-05 includes short circuit protection with continuous auto-recovery and overload protection with auto-recovery. Its overload protection range is specified at 160% to 250%, helping protect the converter during abnormal load conditions.

Can the DCW03A-05 be used in demanding temperature environments?

This model is specified for operation from -40°C to +71°C, subject to the output derating curve. Its storage temperature range is -40°C to +105°C, which supports use in a wide range of industrial and enclosed equipment environments.

What makes the DCW03A-05 suitable for compact equipment designs?

The converter uses free air convection cooling and a five-sided shield metal case, which supports reliable operation without adding active cooling hardware. Its compact dimensions of 1.25 x 0.8 x 0.48 inches also make it easier to use where board or enclosure space is limited.

Model	Power	Voltage	Current	IP Rating
Mean Well DCW03C-15 DC-DC Converter - 3W - 36~72V in ±15V out	3W	15V	0.1A	—	View
Mean Well DCW03C-12 DC-DC Converter - 3W - 36~72V in ±12V out	3W	12V	0.12A	—	View
Mean Well DCW03C-05 DC-DC Converter - 3W - 36~72V in ±5V out	3W	5V	0.3A	—	View
Mean Well DCW03B-15 DC-DC Converter - 3W - 18~36V in ±15V out	3W	15V	0.1A	—	View
Mean Well DCW03B-12 DC-DC Converter - 3W - 18~36V in ±12V out	3W	12V	0.12A	Indoor	View
Mean Well DCW03B-05 DC-DC Converter - 3W - 18~36V in ±5V out	3W	5V	0.3A	—	View
Mean Well DCW03A-15 DC-DC Converter - 3W - 9~18V in ±15V out	3W	15V	0.1A	—	View
Mean Well DCW03A-12 DC-DC Converter - 3W - 9~18V in ±12V out	3W	12V	0.12A	—	View

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