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Mean Well SCW12W8-05 DC-DC Converter - 12W 9~75V DC in 5V out 2.4A

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

SKU SCW12W8-05

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Overview

SCW12W8-05 is the 5V output model of this series: rated power 12W, typical efficiency 85%.

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

SCW12W8-05Specifications 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: 581mA
OUTPUT VOLTAGE: 5V
OUTPUT CURRENT: 2400mA
EFFICIENCY (TYP.): 85%
CAPACITOR LOAD (MAX.)^{* For each output}: 680μF

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

SCW12W8-05 DIMENSION (L*W*H) 31.8*20.3*12.2mm — DIMENSION (L*W*H) 31.8*20.3*12.2mm

SCW12W8-05 EMCSuggestionCircuit — EMCSuggestionCircuit

SCW12W8-05 EMCSuggestionCircuit (2) — EMCSuggestionCircuit (2)

SCW12W8-05 Pin Assignment — Pin Assignment

Typical applications

Downloads

Datasheet1

SCW12W8-05 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 are the main electrical specifications of the Mean Well SCW12W8-05?

The SCW12W8-05 is a 12W DC-DC converter with a 9 to 75V DC input range and a regulated 5V DC output. It is designed as an ultra-wide 8:1 input model, which helps one part number cover multiple nominal DC bus voltages. This model also provides 85% typical efficiency.

What kind of DC input systems is the SCW12W8-05 designed for?

This model is intended for equipment that operates across nominal 12V, 24V, 36V, 48V, or 72V DC systems within its 9 to 75V input range. That makes it useful where the available DC source can vary widely but the load still requires a stable 5V output. Its ultra-wide range is a key differentiator for mixed-voltage industrial and embedded applications.

Is the SCW12W8-05 suitable for demanding temperature conditions?

Yes. The SCW12W8-05 is rated for operation from -40C to +85C, with output derating at higher temperatures per the derating curve, which makes it appropriate for environments beyond normal room-temperature electronics use. Buyers looking at industrial equipment or other temperature-variable settings often look for this range.

What protection and isolation features does the SCW12W8-05 include?

This converter includes protection for short circuit, overload, over voltage, and UVLO. It also provides 3KV DC input-to-output isolation, which is important in designs that need electrical separation between the source side and the load side. These protections help make the model more robust in demanding DC power systems.

How does the SCW12W8-05 compare with a standard narrow-input DC-DC converter?

The main difference is its 8:1 ultra-wide input range, from 9 to 75V DC, which is much broader than a typical fixed-input or narrow-range converter. That can reduce the need to qualify different converter variants for different nominal bus voltages. The SCW12W8-05 also combines that wide input capability with a compact DIP package.

What product features stand out for system designers evaluating the SCW12W8-05?

The SCW12W8-05 uses a compact DIP package with a five-side metal shielded case and offers remote ON/OFF control. It also complies with BS EN/EN55032 radiated Class A without additional components, which can simplify product selection in some designs.

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