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Mean Well SCW20W8-24 DC-DC Converter - 20W 9~75V DC in 24V out 833mA

Name: Mean Well SCW20W8-24 DC-DC Converter - 20W 9~75V DC in 24V out 833mA
Brand: Mean Well
SKU: SCW20W8-24
Price: 23.18 USD
Availability: InStock

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Overview

SCW20W8-24 is the 24V output model of this series: rated power 20W, typical efficiency 88%.

SCW20W8 and DCW20W8 series are 20W isolated and regulated module type DC-DC converter with DIP24 package. It features international standard pins, a high efficiency up to 88%, wide working temperature range -40~+95℃, 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/12V/15V/24V for single output and ±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 ~ +95℃
No minimum load required
Comply to BS EN/EN55032 radiated Class A without additional components
High efficiency up to 88%
Protections: Short circuit (Continuous) / Overload / Over voltage / UVLO
Remote ON/OFF control
3KVdc I/O isolation
3 years warranty

Specifications

SCW20W8-24Specifications from the official datasheet (2025-08-21 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Nominal 12V, 24V,36V,48V,72V (9 ~ 75V)
INPUT CURRENT NO LOAD: 10mA
INPUT CURRENT FULL LOAD: 947mA
OUTPUT VOLTAGE: 24V
OUTPUT CURRENT: 833mA
EFFICIENCY (TYP.): 88%
CAPACITOR LOAD (MAX.)^{* For each output}: 220μF

INPUT

VOLTAGE RANGE: 9~75Vdc
SURGE VOLTAGE (100ms max.): 100Vdc
FILTER: Pi type
PROTECTION (Typ.): 6A Slow-Blow Type

OUTPUT

VOLTAGE ACCURACY: ±2%
RATED POWER: 20W
RIPPLE & NOISE^Note.2: 100mVp-p for 3.3~5V output ; 12~24V for 1% output Vp-p max.
LINE REGULATION^Note.3: ±0.5% for other output, ±1% for 3.3Vo output
LOAD REGULATION^Note.4: ±0.5%
CROSS DEGUIATION: ±5% @ 25%~100% Load only for dual output
SWITCHING FREQUENCY (Typ.): 200KHz

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 190% 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 ~ +95℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +110℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.05% / ℃ max. (0 ~ 95℃)
SOLDERING TEMPERATURE: 1.5mm from case of 3 ~ 5sec./260℃ 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, ±4KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Bursts BS EN/EN61000-4-4 Level 2, 0.5KV
Surge BS EN/EN61000-4-5 Level 1, 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, ±4KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 2, 0.5KV
Surge	BS EN/EN61000-4-5	Level 1, 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.): >570Khrs 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: 20g ; 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

SCW20W8-24 DIMENSION (L*W*H) 31.8*20.3*12.2mm — DIMENSION (L*W*H) 31.8*20.3*12.2mm

SCW20W8-24 Derating Curve — Derating Curve

SCW20W8-24 Pin Assignment — Pin Assignment

Typical applications

Downloads

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 SCW20W8-24?

The SCW20W8-24 is a 20W DC-DC converter with an ultra-wide 9 to 75V DC input range. It provides a regulated 24V DC output, which makes it suitable for systems that operate across multiple nominal DC bus voltages.

What types of applications is the SCW20W8-24 designed for?

This model is designed for DC-powered industrial and embedded equipment that needs regulated 24V output from a wide DC input range. Its compact DIP package and wide input window make it relevant for OEM, control, and modular power applications.

How does the SCW20W8-24 differ from narrower input DC-DC converters?

A key difference is its 8:1 ultra-wide input range of 9 to 75V DC, which gives it more flexibility than converters built for a narrow nominal input range. That can help buyers standardize on one model across equipment using different DC source voltages.

Is the Mean Well SCW20W8-24 suitable for harsh temperature environments?

Yes. The SCW20W8-24 has an operating temperature range of -40°C to +95°C, subject to the derating curve (output load must be reduced at higher ambient temperatures). Buyers should still confirm the full application environment and enclosure conditions against their system requirements.

What protection and isolation features does the SCW20W8-24 include?

This model includes protection for short circuit, overload, over voltage, and UVLO. It also provides 3KV DC input-to-output isolation, which is an important specification for systems that need electrical separation between input and output sides.

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