MEAN WELL DCWN03W8-12 3W 12V 0.125A On Board Type (Module Potted)

Part numberDCWN03W8-12
Output voltage 12 V
Rated current 0.125 A
Rated power 3 W
$14.53Excluding tax and shipping
Ships in 3–5 business daysLead time is the time from order to dispatch, and does not include transit time.
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SCWN03W8,DCWN03W8 model selection table DIP - 1.25" x 0.8" Footprint
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Key specifications

Complete technical specifications
Output
Output voltage 12 V
Rated current 0.125 A
Rated power 3 W
Typical efficiency 84 %
Mechanical
Cooling Free-air convection
Operating temperature -40 to 95 °C
Dimensions (L × W × H) 31.8 × 20.3 × 10.2 mm

Is this model right for you?

Within the SCWN03W8,DCWN03W8 series, the DCWN03W8-12 lists 12 V, 0.125 A, 84%. By comparison DCWN03W8-05 lists 5 V, 0.3 A, 79%; DCWN03W8-15 lists 15 V, 0.1 A, 81%; SCWN03W8-05 lists 5 V, 0.6 A, 80%; SCWN03W8-12 lists 12 V, 0.25 A, 84%. Select the model whose output voltage and output current match the installation.

Other voltages in SCWN03W8,DCWN03W8

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Product overview

The DCWN03W8-12 is a DC/DC On Board Type (Module Potted) product in the DIP - 1.25" x 0.8" Footprint family. It accepts a 9~75Vdc input voltage range and uses free-air convection cooling. The case is non-conductive black plastic (UL 94V-0 rated). Dimensions are 31.8 × 20.3 × 10.2 mm and net weight is 12.5 g.

Where this model fits

The DCWN03W8-12 is used in Embedded & Board-level Design. Its case is non-conductive black plastic (UL 94V-0 rated), cooling is by free-air convection, and dimensions are 31.8 × 20.3 × 10.2 mm with a net weight of 12.5 g.

Complete technical specifications

Rev. 2025-07-17
Output
Output voltage 12 V
Rated current 0.125 A
Rated power 3 W
Input
AC input range 9~75Vdc
DC input range 9–75 VDC
Typical efficiency 84 %
Protection
Short circuit Protected
Overload Protected
Over voltage Protected
Continuous, automatic recovery
Environmental
Operating temperature -40 to 95 °C
Storage temperature -40 to 125 °C
Vibration 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
Mechanical
Dimensions (L × W × H) 31.8 × 20.3 × 10.2 mm
Net weight 12.5 g
Cooling Free-air convection
Fan Not supported
Case material Non-Conductive black plastic (UL 94V-0 rated)
Safety & compliance
Safety standards EAC TP TC 020/2011 approved

These approvals are recorded for the series as a whole. Where a line names particular models or ratings, it applies only to those — read it against this part number, and ask us for the certificate if your approval process needs it.

Identification
Part number DCWN03W8-12
Brand MEAN WELL
Category DC/DC On Board Type (Module Potted)
Series SCWN03W8,DCWN03W8

Approvals and compliance

From the manufacturer's datasheet for this series

Eurasian Economic Union

  • EAC

    Conformity with the Eurasian Economic Union technical regulations, covering Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan. TP TC 004 is the low-voltage regulation and TP TC 020 the electromagnetic-compatibility one, so which number appears tells you what was assessed.

Isolation and electromagnetic compatibility
Withstand voltage I/P-O/P:3KVdc
Isolation resistance I/P-O/P:1000M Ohms / 500Vdc / 25℃/ 70% RH
EMC emission Parameter Standard Test Level / Note
Read the datasheet's exact wording

EAC TP TC 020/2011 approved

Reproduced unedited from the manufacturer's datasheet. Where an approval covers only some models, the wording says so. Ask us for the certificate itself if your approval process needs it.

Certificates

Certificate copy supplied with this model.

  • CE · R50453592

    100%
    CE certificate R50453592

    CE · Certificate number R50453592

Ordering & shipping information

Order and delivery terms
Part number DCWN03W8-12
Minimum order quantity 1
Country of origin China
Typical packed weight 163 g
Unit weight 12.5 g

Downloads

SCWN03W8,DCWN03W8 model comparison

View all models
ModelOutput voltageRated currentRated powerPriceAvailability
DCWN03W8-055 V0.3 A3 W$14.53
Ships in 3–5 business days
DCWN03W8-12 12 V0.125 A3 W$14.53
Ships in 3–5 business days

DCWN03W8-12: 12 V output; the rest of the series runs 3.3 V to 15 V.

DCWN03W8-12: 0.125 A output current; the rest of the series runs 0.1 A to 0.6 A.

DCWN03W8-12: 3 W rated power; SCWN03W8-03: 1.98 W.

DCWN03W8-12: 84% typical efficiency; the rest of the series runs 79% to 83%.

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Technical data source

Primary source
MEAN WELL
Datasheet revision
2025-07-17
Last verified

How we source and verify product data

Specifications are transcribed from the manufacturer datasheet and are subject to change without notice. The current manufacturer datasheet governs in case of any discrepancy.