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Mean Well MDS15A-12 DC-DC Converter - 15W - 9~18V in 12V out 1.25A

SKU MDS15A-12

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Overview

MDS15A-12 is the 12V output model of this series: rated power 15W, typical efficiency 88%.

MDS15 series is 15W isolated and regulated module type medical grade DC-DC converter with 2"x1" package. It features international standard pins, a high efficiency up to 88%, wide working temperature range -40~+90℃, 4KVAC I/P-O/P high isolation voltage, compliance with IEC60601-1 medical standard, continuous-mode short circuit protection, etc. The models account for different input voltage 9~18V, 18~36V and 36~75V 2:1 wide input range, and various output voltage 5V/12V/15V/24V, which are suitable for medical systems, ultra low leakage current.

Features

DIP 2"x1" package with international standard pinout
2:1 wide input range
Low patient leakage current <5μA
Wide operating temperature range -40 ~ +90℃
Medical safety approved (2xMOPP) according to IEC60601-1
No minimum load required
Protections: Short circuit (Continuous) / Overload / Input under voltage
4000VAC high I/O isolation (Reinforced isolation)
3 years warranty

Specifications

MDS15A-12Specifications from the official datasheet (2024-04-30 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Normal 12V (9 ~ 18V)
INPUT CURRENT NO LOAD: 10mA
INPUT CURRENT FULL LOAD: 1450mA
OUTPUT VOLTAGE: 12V
OUTPUT CURRENT: 1250mA
EFFICIENCY (Typ.): 88%
CAPACITOR LOAD (MAX.): 1000μF

INPUT

VOLTAGE RANGE: 9~18Vdc
SURGE VOLTAGE (100ms max.): 12Vin models : 25Vdc, 24Vin models : 50Vdc, 48Vin models : 100Vdc
FILTER: Pi type
PROTECTION: Fuse recommended. 12Vin models: 4A delay time Type, 24Vin models: 2A delay time Type, 48Vin models: 1A delay time Type

OUTPUT

VOLTAGE ACCURACY: ±1%
RATED POWER: 15W
RIPPLE & NOISE^Note.2: 60mVp-p
LINE REGULATION^Note.3: ±0.5%
LOAD REGULATION^Note.4: ±0.5%
SWITCHING FREQUENCY (Typ.): 12Vin/24Vin:250KHz, 48Vin:300KHz

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 185% rated output power Protection type : Recovers automatically after fault condition is removed
UNDER VOLTAGE LOCKOUT: 12Vin: 7.5Vdc, 24Vin: 15Vdc, 48Vin: 33Vdc

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +90℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +110℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 70℃)
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.6)

SAFETY STANDARDS: IEC60601-1(LVD) 3rd edition, EAC TP TC 020/2011(EAC TP TC 004 for 48Vin type only) approved
WITHSTAND VOLTAGE: I/P-O/P 4KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 100pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55011 Class A without external components
Radiated BS EN/EN55011 Class A without external components
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 1, ±15KV air, ±8KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 1, 10V/m
EFT/Bursts BS EN/EN61000-4-4 Level 1, ±2KV
Surge BS EN/EN61000-4-5 Level 1, ±1KV Line-Line, ±2KV Line-GND
Conducted BS EN/EN61000-4-6 Level 1, 10Vrms(e.m.f.)
Magnetic Field BS EN/EN61000-4-8 Level 2, 10A/m

Parameter	Standard	Test Level
Conducted	BS EN/EN55011	Class A without external components
Radiated	BS EN/EN55011	Class A without external components

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 1, ±15KV air, ±8KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 1, 10V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 1, ±2KV
Surge	BS EN/EN61000-4-5	Level 1, ±1KV Line-Line, ±2KV Line-GND
Conducted	BS EN/EN61000-4-6	Level 1, 10Vrms(e.m.f.)
Magnetic Field	BS EN/EN61000-4-8	Level 2, 10A/m

OTHERS

MTBF: 1060Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 50.8*25.4*12mm (2*1*0.47 inch)
CASE MATERIAL: UL94V-0 plastic case
PACKING: 30g; 18pcs/per tube, 432pcs/24 tube max./carton

Test conditions and notes6

1.All parameters are specified at normal input(A:12Vdc, B:24Vdc, C: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.
5.2xMOPP base on a working voltage of 250Vac between Primary to Secondary.
6.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

MDS15A-12 Pin Configuration — Pin Configuration

MDS15A-12 Derating Curve — Derating Curve

Typical applications

Medical devices
Medical oxygen monitor
CT scanning
Medical carts
Oral care equipment

Downloads

Certificates3

Certificate (MDS15-20-EMC)(EN) PDF Download

Certificate (MDS15-20-CE-dec)(EN) PDF Download

Certificate (MDS15-20-UK-dec)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MDS15A-12 for 12V PLC I/O or sensor power in a compact control cabinet?

Yes, it is a constant-voltage converter with a 12V output rated for 15W and 1.25A. That makes it a fit for low-power 12V industrial control loads when the available source is within the listed 9-18Vdc input range.

Is the MDS15A-12 suitable for embedded 12V control boards that need regulated output?

It can be appropriate for embedded electronics that require a steady 12V constant-voltage output rather than a variable supply. The key limits are the 15W power rating, 1.25A output current, and 9-18Vdc input range.

Can this converter power small 12V relays or interface modules in automation equipment?

It is intended for low-power 12V loads and provides constant-voltage output at 12V. For automation interfaces, the practical check is whether the total load stays within 15W and 1.25A and the source feeding it is within 9-18Vdc.

Is the MDS15A-12 suitable for outdoor or harsh-temperature locations?

The published operating temperature is -40C to +90C (load derating applies at higher ambient temperatures per the derating curve), so the temperature range is broad. However, no IP rating is listed in the provided specs, so the product data does not confirm outdoor or washdown suitability on its own.

How does the MDS15A-12 compare with the other MDS15A models?

All MDS15A models are 15W converters with 9-18Vdc input. The series outputs are MDS15A-05 at 5V and 3A, MDS15A-12 at 12V and 1.25A, MDS15A-15 at 15V and 1A, and MDS15A-24 at 24V and 625mA.

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Model	Power	Voltage	Current	IP Rating
Mean Well MDS15C-24 DC-DC Converter - 15W - 36~75V in 24V out 625mA	15W	24V	625 Milliampere	IP20	View
Mean Well MDS15C-15 DC-DC Converter - 15W - 36~75V in 15V out 1A	15W	15V	1A	IP20	View
Mean Well MDS15C-12 DC-DC Converter - 15W - 36~75V in 12V out 1.25A	15W	12V	1.25A	IP20	View
Mean Well MDS15C-05 DC-DC Converter - 15W - 36~75V in 5V out 3A	15W	5V	3A	IP20	View
Mean Well MDS15B-24 DC-DC Converter - 15W - 18~36V in 24V out 625mA	15W	24V	625 Milliampere	IP20	View
Mean Well MDS15B-15 DC-DC Converter - 15W - 18~36V in 15V out 1A	15W	15V	1A	IP20	View
Mean Well MDS15B-12 DC-DC Converter - 15W - 18~36V in 12V out 1.25A	15W	12V	1.25A	IP20	View
Mean Well MDS15B-05 DC-DC Converter - 15W - 18~36V in 5V out 3A	15W	5V	3A	IP20	View
Mean Well MDS15A-24 DC-DC Converter - 15W - 9~18V in 24V out 625mA	15W	24V	625 Milliampere	IP20	View
Mean Well MDS15A-15 DC-DC Converter - 15W - 9~18V in 15V out 1A	15W	15V	1A	IP20	View
Mean Well MDS15A-05 DC-DC Converter - 15W - 9~18V in 5V out 3A	15W	5V	3A	IP20	View

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