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Mean Well DCW12W8-12 DC-DC Converter - 12W 9~75V DC in ±12V out 500mA

8:1(9~75VDC) ultra-wide input rangeno minimum load required3KVdc I/O isolation

SKU DCW12W8-12

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Overview

DCW12W8-12 is the ±12V output model of this series: rated power 12W, typical efficiency 87%.

SCW12W8 and DCW12W8 series are 12W isolated and regulated module type DC-DC converter with DIP24 package. It features international standard pins, a high efficiency up to 87%, wide working temperature range -40~+85℃, 3KVdc I/OP-O/P isolation voltage, Compliance to BS EN/EN55032 radiated Class A without additional components, continuous-mode short circuit protection, 8:1(9~75V) ultra-wide input range, and various output voltage, 3.3V/5V/9V/12V/15V for single output and ±5V/±12V/±15V for dual outputs, which are suitable for all kinds of systems, such as industrial control, telecommunication field, distributed power architecture, and so on.

Features

DIP24 package with industry standard pinout
8:1(9~75Vdc) ultra-wide input range
Operating temperature range -40 ~ +85℃
No minimum load required
Comply to BS EN/EN55032 radiated Class A without additional components
High efficiency up to 87%
Protections: Short circuit (Continuous) / Overload / Over voltage / UVLO
Remote ON/OFF control
3KVdc I/O isolation
3 years warranty

Specifications

DCW12W8-12Specifications from the official datasheet (2025-07-17 edition)Download datasheet PDF

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Nominal 12V, 24V,36V,48V,72V (9 ~ 75V)
INPUT CURRENT NO LOAD: 10mA
INPUT CURRENT FULL LOAD: 568mA
OUTPUT VOLTAGE: ±12V
OUTPUT CURRENT: ±500mA
EFFICIENCY (TYP.): 87%
CAPACITOR LOAD (MAX.)^{* For each output}: *220μF

INPUT

VOLTAGE RANGE: 9~75Vdc
SURGE VOLTAGE (100ms max.): 100Vdc
FILTER: Pi type
PROTECTION (Typ.): Fuse recommended. 4A Slow-Blow Type

OUTPUT

VOLTAGE ACCURACY: ±2%
RATED POWER: 12W
RIPPLE & NOISE^Note.2: 100mVp-p
LINE REGULATION^Note.3: ±0.5%
LOAD REGULATION^Note.4: ±1% for 3.3Vo, ±0.5% for others
CROSS DEGUIATION: ±5% @ 25%~100% Load only for dual output
SWITCHING FREQUENCY (Typ.): 300KHz

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 230% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: Protection type : Clamp by TVS diode
UNDER VOLTAGE LOCKOUT (Typ.): Start-up voltage 8.8Vdc Shutdown voltage 8Vdc

FUNCTION

REMOTE CONTROL: Power ON: R.C. ~ -Vin >2.5~30Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1Vdc or short

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +110℃ max.
WORKING HUMIDITY: 5% ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.05% / ℃ (0 ~ 85℃)
SOLDERING TEMPERATURE: 1.5mm from case of 3 ~ 5sec./265℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note.5)

SAFETY STANDARDS: EAC TP TC 020/2011 approved
WITHSTAND VOLTAGE: I/P-O/P:3KVdc
ISOLATION RESISTANCE: I/P-O/P:1000M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 1000pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 N/A
Radiated BS EN/EN55032 Class A without additional components Class B with additional components
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Bursts BS EN/EN61000-4-4 Level 1, 0.5KV
Surge BS EN/EN61000-4-5 Level 2, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
Magnetic field immunity BS EN/EN61000-4-8 Level 1, 1A/m

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	N/A
Radiated	BS EN/EN55032	Class A without additional components Class B with additional components

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 1, 0.5KV
Surge	BS EN/EN61000-4-5	Level 2, 0.5KV Line-Line
Conducted	BS EN/EN61000-4-6	Level 2, 3V(e.m.f.)
Magnetic field immunity	BS EN/EN61000-4-8	Level 1, 1A/m

OTHERS

MTBF (Typ.): >860Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 31.8*20.3*12.2mm (1.25*0.8*0.48 inch)
CASE MATERIAL: Five-side Metal shielded case
PACKING: 17.5g ; 15pcs/per tube, 750pcs/50 tube/per carton

Test conditions and notes5

1.All parameters are specified at normal input(24Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 0% to 100% rated load.
5.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)

Technical drawings

DCW12W8-12 DIMENSION (L*W*H) 31.8*20.3*12.2mm — DIMENSION (L*W*H) 31.8*20.3*12.2mm

DCW12W8-12 EMCSuggestionCircuit — EMCSuggestionCircuit

DCW12W8-12 EMCSuggestionCircuit (2) — EMCSuggestionCircuit (2)

DCW12W8-12 Pin Assignment — Pin Assignment

Typical applications

Downloads

Datasheet1

DCW12W8-12 datasheetSCW12W8_DCW12W8_Spec_Sheet.pdf · 2025-07-17 edition PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the input voltage range of the Mean Well DCW12W8-12?

The DCW12W8-12 accepts a very wide 9 to 75V DC input range. This 8:1 input range lets the module support multiple common DC system voltages within one model.

What output does the DCW12W8-12 provide?

This model is a 12W DC-DC converter with a ±12V DC output. It is designed for applications that need an isolated dual-output DC supply in a compact DIP package.

Is the DCW12W8-12 suitable for harsh temperature environments?

Yes. The specified operating temperature range is -40 to +85 degrees C, with output derating at higher temperatures per the derating curve, making it suitable for demanding industrial and embedded environments when used within its ratings.

What protections are included in the Mean Well DCW12W8-12?

The DCW12W8-12 includes short circuit, overload, over voltage, and under-voltage lockout protection. Short circuit protection is continuous with automatic recovery, and overload protection uses hiccup mode with automatic recovery after the fault is removed.

What kinds of applications is the DCW12W8-12 commonly used for?

This converter is typically considered for industrial electronics, control systems, telecom equipment, and embedded devices that need isolated DC power conversion from a wide DC input source. Its compact DIP form factor and 3KVdc input-to-output isolation make it relevant where board-level power conversion and isolation are important.

What makes the DCW12W8-12 different from narrower-input DC-DC converters?

A key difference is its 8:1 ultra-wide 9 to 75V DC input range, which gives it more flexibility than models built for a much narrower input window. It also combines that broad input range with up to 87% efficiency and 3KVdc isolation in a compact module format.

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