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Mean Well SDM30-48S12 DC-DC Converter - 35W - 36~72V in 12V out 2.5A

Name: Mean Well SDM30-48S12 DC-DC Converter - 35W - 36~72V in 12V out 2.5A
Brand: Mean Well
SKU: SDM30-48S12
Price: 30.3 USD
Availability: InStock

SKU SDM30-48S12

$30.30 USD

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Overview

SDM30-48S12 is the 12V output model of this series: rated current 2.5A, rated power 30W, typical efficiency 84%.

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

SDM30-48S12Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 2.5A
CURRENT RANGE: 0 ~ 2.5A
RATED POWER: 30W
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
VOLTAGE TOLERANCE^Note.3: ±2.0% max.
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.): 84%
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: 13.8 ~ 18V 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. All parameters NOT specially mentioned are measured at 12,24,48VDC input, rated load and 25℃ of ambient temperature.
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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Short circuit not more than 60 second.
5. DC source wires ≧5cm, an input external al capacitor 47 ~ 100uF is required.
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. 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

SDM30-48S12 Block Diagram — Block Diagram

SDM30-48S12 Derating Curve — Derating Curve

Downloads

Certificates1

EMC Certificate(SDM30)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the SDM30-48S12 in a 48V industrial control cabinet to run 12V sensors or auxiliaries?

Yes, this model is built for a 36~72V input range and provides a constant 12V output. Its 30W rating and 2.5A output current fit moderate 12V control loads in industrial or automation enclosures. The compact 50.8 × 50.8 × 16.0 mm size also suits space-limited panels.

Is the SDM30-48S12 a good fit for telecom or embedded systems that need regulated 12V from a higher-voltage bus?

It can fit systems that have a 36~72V source and require a constant 12V rail. With 30W available at up to 2.5A, it is better suited to lower-power embedded or auxiliary 12V sections rather than larger 12V loads. Buyers should size the downstream load to stay within the 30W and 2.5A limits.

Can this converter power 12V PLC accessories or interface modules from a 36~72V supply?

Yes, that is a reasonable use case when the accessories need a constant 12V supply and the total draw stays within 2.5A. The unit is designed for 36~72V input and operates across -25°C to +85°C, which aligns with many industrial enclosure environments. Its constant-voltage output is intended for equipment that expects a regulated 12V source.

What is the difference between the SDM30-48S12 and the other SDM30 36~72V input models?

Within the 36~72V input group, the SDM30-48S3 is 16.5W at 3.3V and 5A, the SDM30-48S5 is 25W at 5V and 5A, this SDM30-48S12 is 30W at 12V and 2.5A, and the SDM30-48S15 is 30W at 15V and 2A. Across the broader series, the 12V-input models are SDM30-12S3 at 16.5W, SDM30-12S5 at 25W, SDM30-12S12 at 25.2W, and SDM30-12S15 at 25.5W, while the 24V-input models are SDM30-24S3 at 16.5W, SDM30-24S5 at 25W, SDM30-24S12 at 30W, and SDM30-24S15 at 30W. The main selection points are input range, output voltage, output current, and total wattage.

Is the SDM30-48S12 suitable for outdoor or harsh-environment use?

The published specs show an operating temperature range of -25°C to +85°C, which supports wide-temperature operation. The specs provided do not list an IP rating, so it should be treated as a converter for protected enclosures rather than direct outdoor exposure. For exposed locations, buyers typically look for a stated IP rating in addition to the temperature range.

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Mean Well SDM30-48S12 DC-DC Converter - 35W - 36~72V in 12V out 2.5A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

FUNCTION

ENVIRONMENT

SAFETY & EMC (Note 6)

OTHERS

Technical drawings

Downloads

Certificates1

Catalogues2

FAQ

Payment & Security

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Mean Well SDM30-48S12 DC-DC Converter - 35W - 36~72V in 12V out 2.5A

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