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Mean Well DCW08W8-05 DC-DC Converter - 8W 9~75V DC in ±5V out 800mA

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

SKU DCW08W8-05

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Overview

DCW08W8-05 is the ±5V output model of this series: rated power 8W, typical efficiency 84%.

SCW08W8 and DCW08W8 series are 8W isolated and regulated module type DC-DC converter with DIP24 package. It features international standard pins, a high efficiency up to 86%, wide working temperature range -40~+90℃, 3KVdc I/P-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 ~ +90℃
No minimum load required
Comply to BS EN/EN55032 radiated Class A without additional components
High efficiency up to 86%
Protections: Short circuit (Continuous) / Overload / Over voltage / UVLO
Remote ON/OFF control (Optional)
3KVdc I/O isolation
3 years warranty

Specifications

DCW08W8-05Specifications 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: 397mA
OUTPUT VOLTAGE: ±5V
OUTPUT CURRENT: ±800mA
EFFICIENCY (TYP.): 84%
CAPACITOR LOAD (MAX.)^{* For each output}: *470μF

INPUT

VOLTAGE RANGE: 9~75Vdc
SURGE VOLTAGE (100ms max.): 100Vdc
FILTER: Pi type
PROTECTION (Typ.): Fuse recommended. 3A Slow-Blow Type

OUTPUT

VOLTAGE ACCURACY: ±2%
RATED POWER: 8W
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: 200 ~ 300% 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
UNDER VOLTAGE LOCKOUT (Typ.) Shutdown voltage: 8Vdc

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +90℃ (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: Non-Conductive black plastic (UL 94V-0 rated)
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

DCW08W8-05 DIMENSION (L*W*H) 31.8*20.3*12.2mm — DIMENSION (L*W*H) 31.8*20.3*12.2mm

DCW08W8-05 Derating Curve — Derating Curve

DCW08W8-05 Pin Assignment — Pin Assignment

Typical applications

Downloads

Datasheet1

DCW08W8-05 datasheetSCW08W8_DCW08W8_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 and output range of the Mean Well DCW08W8-05?

The DCW08W8-05 is an 8W isolated DC-DC converter with an ultra-wide 9 to 75V DC input range. This model provides dual ±5V DC output. That wide input range makes it suitable for systems built around nominal 12V, 24V, 36V, 48V, or 72V DC buses.

Is the DCW08W8-05 a good fit for industrial or mobile DC power systems with unstable input voltage?

This model is designed for applications where the input supply can vary widely, thanks to its 8:1 input range from 9 to 75V DC. That makes it relevant for industrial control, telecom, and vehicle-related DC bus environments where voltage may not stay close to a single nominal level. Buyers looking for broad input tolerance in a compact module often choose this type of converter for that reason.

What protection and isolation features does the DCW08W8-05 include?

The DCW08W8-05 includes continuous short-circuit protection with automatic recovery, overload protection, over-voltage protection, and under-voltage lockout. It also provides 3KV DC input-to-output isolation. These protections help support use in equipment that needs fault tolerance and electrical separation between input and output stages.

Can the DCW08W8-05 be used in harsh temperature environments?

This converter is rated for operation from -40°C to +90°C, subject to the product's derating guidance. That makes it suitable for demanding indoor equipment or enclosed industrial environments where temperatures can be well outside normal room conditions. Buyers should still confirm the full thermal conditions of the final enclosure against the manufacturer's derating curve.

How does the DCW08W8-05 differ from narrower-input DC-DC converter modules?

The main differentiator of the DCW08W8-05 is its very wide 9 to 75V DC input range in an 8W DIP package module. Compared with narrower-input converters, it can cover more nominal DC bus voltages with a single model. That can reduce SKU complexity when a project family uses different source voltages but needs the same ±5V output class.

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