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Mean Well SKMW30G-03 DC-DC Converter - 30W - 18~75V in 3.3V out 7.5A

SKU SKMW30G-03

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Overview

SKMW30G-03 is the 3.3V output model of this series: rated power 30W, typical efficiency 88%.

SKMW30 and DKMW30 series are 30W isolated and regulated module type DC-DC converter with DIP 1"x1" package. It features international standard pins, a high efficiency up to 90%, wide working temperature range -40~+85℃, 1.5KVDC I/P-O/P isolation voltage, compliance to BS EN/EN55032 radiated Class A without additional components, continuous-mode short circuit, overload, over temperature, input under voltage protection, remote ON/OFF and trimmable output voltage etc. The models account for different input voltage 9~36V and 18~75V 4:1 ultrawide input range, and various output voltage, 3.3V/5V/12V/15V for single output and ±12V/±15V for dual outputs, which are suitable for all kinds of systems, s uch as industrial control, telecommunication field, distributed power architecture, and so on.

Features

DIP 1"x1" package with industry standard pinout
4:1 ultrawide 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 90%
Protections: Short circuit (Continuous) / Overload / Over voltage / Over temperature / Input under voltage
1.5KVDC I/O isolation
Remote ON/OFF control and Triming output (±10%)
3 years warranty

Specifications

SKMW30G-03Specifications from the official datasheet (2024-04-30 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): 48V (18 ~ 75V)
INPUT CURRENT NO LOAD: 8mA
INPUT CURRENT FULL LOAD: 590mA
OUTPUT VOLTAGE: 3.3V
OUTPUT CURRENT: 0~7500mA
EFFICIENCY (TYP.): 88%
CAPACITOR LOAD (MAX.)^{* For each output}: 7500μF

INPUT

VOLTAGE RANGE: 18~75Vdc
SURGE VOLTAGE (100ms max.): 24Vin models : 50Vdc, 48Vin models : 100Vdc
FILTER: Pi type
PROTECTION: Fuse recommended. 24Vin models: 6A delay time Type, 48Vin models: 3A delay time Type
INTERNAL POWER DISSIPATION: 500mW

OUTPUT

VOLTAGE ACCURACY: ±1.5%
RATED POWER: 30W
RIPPLE & NOISE^Note.2: 3.3/5Vout models: 75mVp-p, other models:100mVp-p
LINE REGULATION^Note.3: ±0.2%
LOAD REGULATION^Note.4: Single output models: ±0.2%, Dual output models:±1%
SWITCHING FREQUENCY (Typ.): 3.3/5Vout models: 270KHz, other models: 330KHz
EXTERNAL TRIM ADJ. RANGE (Typ.): ±10% (Single output model only)

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 170% rated output power Protection type : Recovers automatically after fault condition is removed
OVER VOLTAGE: Protection type : Clamp by diode
OVER TEMPERATURE: Shut down o/p voltage, recovers automatically after temperature goes down

FUNCTION

UNDER VOLTAGE LOCKOUT Start-up voltage: 24Vin (F-type): 8.8Vdc, 48Vin (G-type): 17Vdc
UNDER VOLTAGE LOCKOUT Shutdown voltage: 24Vin (F-type): 8Vdc, 48Vin (G-type): 16Vdc
REMOTE CONTROL: Power ON: R.C. ~ -Vin >3.5~75Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1.2Vdc or short

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +105℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 60℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 3sec./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 (EAC TP TC 004 for 48Vin type only) approved
WITHSTAND VOLTAGE: I/P-O/P:1.5KVDC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 1500pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) N/A
Radiated BS EN/EN55032(CISPR32) Class A
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 1, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
Magnetic Field BS EN/EN61000-4-8 Level 2, 3A/m

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32)	N/A
Radiated	BS EN/EN55032(CISPR32)	Class A

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

OTHERS

MTBF: 3.3/5Vout models: 860Khrs, Other models: 1170Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 25.4*25.4*10.2mm (1*1*0.4 inch)
CASE MATERIAL: Black coated copper with non-conductive base
PACKING: 19.2g ; 12pcs/per tube, 600pcs/50 tube/per carton

Test conditions and notes5

1.All parameters are specified at normal input(F:24Vdc, G:48Vdc), 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

SKMW30G-03 SKMW30 & DKMW30 series — SKMW30 & DKMW30 series

SKMW30G-03 SKMW30 & DKMW30 series (2) — SKMW30 & DKMW30 series (2)

SKMW30G-03 Plug Assignment — Plug Assignment

Typical applications

Downloads

Certificates2

Certificate (SKMW30-DKMW30-CE-dec)(EN) PDF Download

Certificate (SKMW-DKMW30-UK-dec)(EN) PDF Download

Test reports1

Test Report (SKMW30G-03)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SKMW30G-03 for a 3.3V embedded processor or logic board?

Yes, this converter delivers a constant 3.3V output with up to 7.5A, for a total of 30W. That makes it a fit for embedded processor boards, logic rails, or control electronics that require regulated 3.3V power within those limits.

Is the SKMW30G-03 appropriate for telecom or industrial systems with higher input bus ranges?

It accepts an 18-75V input range, which suits equipment built around higher-voltage industrial or telecom-style bus ranges. On the output side, it is intended for loads that need 3.3V constant voltage and no more than 7.5A.

Can this model support low-voltage digital control hardware in automation equipment?

Yes, the 3.3V constant-voltage output is appropriate for digital control hardware, interface boards, and embedded automation electronics that run on 3.3V. Its 30W rating and 7.5A maximum output current define the available capacity.

Can the SKMW30G-03 be used in harsh temperature environments?

The specified operating range is -40C to +85C, so it is built for use in equipment exposed to a wide ambient temperature range. The published specs do not include an IP rating, so moisture or dust exposure should not be assumed from the temperature rating alone.

What is the difference between the SKMW30G-03 and the other SKMW30G output options?

Each model in the SKMW30G group is rated at 30W with the same 18-75V input range. The output versions are 3.3V at 7.5A, 5V at 6A, 12V at 2.5A, and 15V at 2A.

Payment & Security

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Model	Power	Voltage	Current	IP Rating
Mean Well SKMW30W8-15 30W DC-DC Converter 15VDC 2A	30W	15V	2A	IP20	View
Mean Well SKMW30W8-12 30W DC-DC Converter 12VDC 2.5A	30W	12V	2.5A	IP20	View
Mean Well SKMW30G-15 DC-DC Converter - 30W - 18~75V in 15V out 2A	30W	15V	2A	IP20	View
Mean Well SKMW30G-12 DC-DC Converter - 30W - 18~75V in 12V out 2.5A	30W	12V	2.5A	IP20	View
Mean Well SKMW30G-05 DC-DC Converter - 30W - 18~75V in 5V out 6A	30W	5V	6A	IP20	View
Mean Well SKMW30F-15 DC-DC Converter - 30W - 9~36V in 15V out 2A	30W	15V	2A	IP20	View
Mean Well SKMW30F-12 DC-DC Converter - 30W - 9~36V in 12V out 2.5A	30W	12V	2.5A	IP20	View
Mean Well SKMW30F-05 DC-DC Converter - 30W - 9~36V in 5V out 6A	30W	5V	6A	IP20	View
Mean Well SKMW30F-03 DC-DC Converter - 30W - 9~36V in 3.3V out 7.5A	30W	3.3V	7.5A	IP20	View

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