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Mean Well SKA20W8-03 20W DC-DC Converter 3.3VDC 6.06A

20W single output DC-DC converter3.3VDC9–75VDC input

SKU SKA20W8-03

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Overview

SKA20W8-03 is the 3.3V output model of this series: rated power 20W, typical efficiency 85%.

SKA20W8 and DKA20W8 series are 20W isolated and regulated module type DC-DC converter with DIP 2"x1" package. It features international standard pins, a high efficiency up to 89%, 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, overload, over voltage, input under voltage protection etc. The models account for 9~75Vdc 8:1 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

DIP 2"x1" 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 89%
Protections: Short circuit (Continuous) / Overload / Over voltage / UVLO
3KVdc I/O isolation
Remote ON/OFF control
3 years warranty

Specifications

SKA20W8-03Specifications from the official datasheet (2026-04-13 edition)

INPUT

VOLTAGE RANGE: 9~75Vdc
INPUT VOLTAGE (RANGE): Nominal 12V, 24V,36V,48V,72V (9 ~ 75V)
INPUT CURRENT NO LOAD: 10mA
INPUT CURRENT FULL LOAD: 809mA
SURGE VOLTAGE (100ms max.): 100Vdc
FILTER: Pi network
PROTECTION: Fuse recommended 6A Slow-Blow

OUTPUT

OUTPUT VOLTAGE: 3.3V
OUTPUT CURRENT: 0~5000mA
EFFICIENCY (TYP.): 85%
CAPACITOR LOAD (MAX.)^{* For each output}: 1000μF
VOLTAGE ACCURACY: ±2%
RATED POWER: 20W
RIPPLE & NOISE^Note.2: 150mVp-p
LINE REGULATION^Note.3: ±0.5%
LOAD REGULATION^Note.4: ±1% for 3.3Vdc output, ±0.5% for other output
CROSS REGULATION: ±5% @ 25% ~ 100% load only dual output
SWITCHING FREQUENCY (Typ.): 200KHz (PWM)

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 230% Protection type : Recovers automatically after fault condition is removed
OVER VOLTAGE: Clamp by TVS diodes
UNDER VOLTAGE LOCKOUT (Typ.): Start-up voltage: 8.8Vdc Shutdown voltage: 7.5Vdc

FUNCTION

REMOTE CONTROL (By request): 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 ~ +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: ±0.03% / ℃ (0 ~ 80℃)
SOLDERING TEMPERATURE: 1.5mm from case of 3 ~ 5 sec./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(CISPR32) N/A
Radiated BS EN/EN55032(CISPR32) Class A without additional components Class B with additional components
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, ±8KV air, Level 2, ±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, Line-Line±0.5KV
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
Magnetic Field BS EN/EN61000-4-8 Level 1, 1A/m

OTHERS

MTBF: >600Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 50.8*25.4*11.2mm (2*1*0.44 inch)
CASE MATERIAL: Six-side shielded case
PACKING: 31g ; 10pcs/per tube, 400pcs/40 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

SKA20W8-03 DIMENSION (L*W*H) 50.8*25.4*11.2mm — DIMENSION (L*W*H) 50.8*25.4*11.2mm

SKA20W8-03 Derating Curve — Derating Curve

SKA20W8-03 SKA20W8 & DKA20W8 series — SKA20W8 & DKA20W8 series

SKA20W8-03 SKA20W8 & DKA20W8 series (2) — SKA20W8 & DKA20W8 series (2)

SKA20W8-03 SKA20W8 & DKA20W8 series (3) — SKA20W8 & DKA20W8 series (3)

SKA20W8-03 Pin Assignment — Pin Assignment

Typical applications

Downloads

::specification::

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