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Mean Well DCW12B-12 DC-DC Converter - 12W - 18~36V in ±12V out

SKU:

DCW12B-12

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Description

Features

2: 1 wide input range

1500VDC I / O isolation

Built-in remote ON/OFF control

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	±2.0% (max.)
Line regulation	± 0.5% (max.)
Load regulation	± 0.5% (max.) @ 10 ~ 100% load
Overload protection	110% ~ 180%, auto-recovery
Efficiency	80% - 80% - 81% \| 84% - 84% - 84% \| 83% - 84% - 83%
Short circuit protection	All output equipped with over current protection \| Protection type: Hiccup mode recovers automatically after fault condition is removed
I / O isolation voltage	I/P-O/P:1.5KVDC
I / O isolation resistance	I/P-O/P: 100M Ohms / 500VDC / 25℃/ 70% RH
Isolation capacitance	2200pF 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	±0.05% / ℃ (0 ~ 50℃)
Dimension (LxWxH) (mm)	31.8 x 20.3 x 12.2mm or 1.25" x 0.80" x 0.48" inch
Case material	Five-sided shield metal case

Specifications

Brand

Mean Well
Series

DCW Series
Power Rating

12 Watt
Output Voltage

12 Volt
Rated Current

0.5 Ampere
Input Voltage

18V~36V
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

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Frequently Asked Questions

What input and output does the Mean Well DCW12B-12 provide?

The DCW12B-12 is a 12W DC-DC converter with a 2:1 input range of 18 to 36VDC. It provides dual ±12VDC outputs with a rated current of 500mA. This makes it suitable for designs that need regulated positive and negative 12V rails from a 24V nominal DC source range.

Is the DCW12B-12 an isolated DC-DC converter?

Yes. This model provides 1500VDC input-to-output isolation, with isolation resistance rated at 100M Ohms at 500VDC. That isolation can help where separation between the source side and load side is required within the product design.

What protection features are included in the DCW12B-12?

The DCW12B-12 includes short circuit and overload protection. Overload protection is specified at 110% to 180% with auto-recovery, and short circuit protection uses hiccup mode that recovers automatically after the fault is removed. These features help protect the converter during abnormal load conditions.

Can the Mean Well DCW12B-12 be used in demanding temperature conditions?

This converter is rated for operation from -40°C to +71°C, subject to the output derating curve. Its storage temperature range is -40°C to +105°C. Cooling is by free air convection, so it is designed for compact embedded use without forced-air cooling hardware.

What makes the DCW12B-12 suitable for compact equipment designs?

The DCW12B-12 has a compact metal package measuring 31.8 x 20.3 x 12.2mm and weighs about 0.0185kg. It also uses a five-sided shield metal case and includes a built-in EMI filter. Those characteristics make it a fit for space-constrained DC power conversion applications where shielding and size matter.

What electrical performance can buyers expect from the DCW12B-12?

Voltage set point accuracy is rated at ±2.0% maximum, with line regulation of ±0.5% maximum and load regulation of ±0.5% maximum from 10% to 100% load. Efficiency is listed up to 84% depending on operating condition. For a 12W isolated module, these figures support stable output performance in regulated DC systems.

Model	Power	Voltage	Current	IP Rating
Mean Well DCW12A-12 DC-DC Converter - 12W - 9~18V in ±12V out	12W	12V	0.5A	Indoor	View
Mean Well DCW12C-15 DC-DC Converter - 12W - 36~72V in ±15V out	12W	15V	0.4A	Indoor	View
Mean Well DCW12C-12 DC-DC Converter - 12W - 36~72V in ±12V out	12W	12V	0.5A	Indoor	View
Mean Well DCW12C-05 DC-DC Converter - 12W - 36~72V in ±5V out	12W	5V	1.2A	Indoor	View
Mean Well DCW12B-15 DC-DC Converter - 12W - 18~36V in ±15V out	12W	15V	0.4A	Indoor	View
Mean Well DCW12B-05 DC-DC Converter - 12W - 18~36V in ±5V out	12W	5V	1.2A	Indoor	View
Mean Well DCW12A-15 DC-DC Converter - 12W - 9~18V in ±15V out	12W	15V	0.4A	Indoor	View
Mean Well DCW12A-12 DC-DC Converter - 12W - 9~18V in ±12V out	12W	12V	0.5A	—	View
Mean Well DCW12A-05 DC-DC Converter - 12W - 9~18V in ±5V out	12W	5V	1.2A	Indoor	View

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