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Mean Well

Mean Well SDM30-12S3 DC-DC Converter - 16.5W - 9.2~18V in 3.3V out 5A

SKU SDM30-12S3
$30.30 USD
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In stock
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Overview

SDM30-12S3 is the 3.3V output model of this series: rated current 5A, rated power 16.5W, typical efficiency 77%.

Features

  • Wide 2:1 DC input range
  • In/out capacitance1000pF
  • Protections: Short circuit / Overload / Over voltage
  • 1000VDC I/O isolation for D/D
  • Cooling by free air convection
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Fixed switching frequency at 225KHz
  • Low cost
  • High reliability
  • 2 years warranty

Specifications

SDM30-12S3Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
3.3V
RATED CURRENT
5A
CURRENT RANGE
0 ~ 5A
RATED POWER
16.5W
RIPPLE & NOISE (max.)Note.2
75mVp-p
VOLTAGE TOLERANCENote.3
±3.0%
LINE REGULATION
±1.0%
LOAD REGULATION
±1.0%
TRIM OUTPUT
±13%(Typ.) output voltage

INPUT

RATED DC INPUT
12S: 12VDC 24S: 24VDC 48S: 48VDC
VOLTAGE RANGE
12S: 9.2 ~ 18VDC 24S: 18~ 36VDC 48S: 36~ 72VDC
EFFICIENCY (Typ.)
77%
DC CURRENT
12S:3.6A 24S:2A 48S:1A
IDLE CURRENT
12S:35mA 24S/48S:30mA

PROTECTION

OVERLOAD
Above 105% rated output power Protection type : Over power limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
3.8 ~ 4.95V Protection type : Shut off o/p voltage, clamping by zener diode
SHORT CIRCUIT
Protection type : Constant current limiting, recovers automatically after fault condition is removed

FUNCTION

ON/OFF CONTROL
Logic "1" or open: power on Logic "0" short to Vin-: power off

ENVIRONMENT

WORKING TEMP.
-25 ~ +85℃ (Refer to "Derating Curve")
STORAGE TEMP., HUMIDITY
-25 ~ +85℃, 0 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0~50℃)

SAFETY & EMC (Note 6)

SAFETY STANDARDS
Design refer to LVD, EAC TP TC 004 approved
ISOLATION VOLTAGE
I/P-O/P:1KVDC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃ / 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-2,3,4,6,8, BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
8083.5K hrs min. Telcordia SR-332 (Bellcore) ; 777.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
50.8*50.8*16mm (2"*2"*0.63") (L*W*H)
PACKING
0.1Kg; 150pcs/15.8Kg/0.94CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Short circuit not more than 60 second.
  5. 5. DC source wires ≧5cm, an input external al capacitor 47 ~ 100uF is required.
  6. 6. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 230mm*230mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  7. 7. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

SDM30-12S3 Block Diagram
Block Diagram
SDM30-12S3 Derating Curve
Derating Curve

Downloads

FAQ

Can I use the SDM30-12S3 to power a 3.3V logic board or embedded controller from a 9.2-18V source?

Yes, this model is designed for constant-voltage 3.3V loads when the available input is within 9.2-18V. It can deliver up to 5A, so the connected 3.3V electronics need to stay within that output current and the 16.5W rating.

Is the SDM30-12S3 a fit for 3.3V communication modules, industrial SBCs, or processor boards?

It is a practical match for 3.3V embedded and interface hardware that needs a regulated constant-voltage rail. The 5A output makes it more suitable for current-hungry 3.3V electronics than a lower-current converter would be.

Can this converter support several 3.3V devices on one rail in an automation system?

It can, provided the combined 3.3V load stays within 5A total. That makes it usable for grouped 3.3V logic, communication, and controller loads in compact industrial or embedded systems.

Is the SDM30-12S3 suitable for outdoor equipment or wide-temperature enclosures?

The rated operating range is -25°C to +85°C, with the load derated at higher ambient temperatures per the derating curve, so it covers a broad temperature window for enclosed equipment. No IP rating is listed, so weather, dust, and water exposure need to be managed at the enclosure level.

How does the SDM30-12S3 compare with the other SDM30 converters listed here?

For the listed 12V-input models, SDM30-12S3 is 16.5W, 3.3V, 5A; SDM30-12S5 is 25W, 5V, 5A; SDM30-12S12 is 25.2W, 12V, 2.1A; and SDM30-12S15 is 25.5W, 15V, 1.7A. The other listed variants are SDM30-24S12 at 30W, 12V, 2.5A; SDM30-24S15 at 30W, 15V, 2A; SDM30-24S3 at 16.5W, 3.3V, 5A; SDM30-24S5 at 25W, 5V, 5A; SDM30-48S12 at 30W, 12V, 2.5A; SDM30-48S15 at 30W, 15V, 2A; SDM30-48S3 at 16.5W, 3.3V, 5A; and SDM30-48S5 at 25W, 5V, 5A.

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Mean Well SDM30-12S3 DC-DC Converter - 16.5W - 9.2~18V in 3.3V out 5A
Mean Well

Mean Well SDM30-12S3 DC-DC Converter - 16.5W - 9.2~18V in 3.3V out 5A

$30.30 USD

SDM30-12S3 is the 3.3V output model of this series: rated current 5A, rated power 16.5W, typical efficiency 77%.

Features

  • Wide 2:1 DC input range
  • In/out capacitance1000pF
  • Protections: Short circuit / Overload / Over voltage
  • 1000VDC I/O isolation for D/D
  • Cooling by free air convection
  • Built-in remote ON-OFF control
  • 100% full load burn-in test
  • Fixed switching frequency at 225KHz
  • Low cost
  • High reliability
  • 2 years warranty
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