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Mean Well MPM-45-12ST Power Supply 45W 12V 3.75A

Name: Mean Well MPM-45-12ST Power Supply 45W 12V 3.75A
Brand: Mean Well
SKU: MPM-45-12ST
Price: 27.07 USD
Availability: InStock

encapsulatedcompact sizemedical safety approvedno load power consumption < 0.1Wextremely low leakage current

SKU MPM-45-12ST

$27.07 USD

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Overview

MPM-45-12ST is the 12V output model of this series: typical efficiency 91.5%.

MPM-45 is a 45W high density and small size (87x52x29.5mm) AC/DC PCB-mount type medical grade power supply. It features the operation for 80~264VAC, a low no load power consumption less than 0.1W, a high efficiency up to 92.5%, Class Ⅱ (no FG) double insulation, outstanding dissipation,2~5G anti-vibration by model, high EMC performance, 4KVAC isolation, etc. The design observes IEC / BS EN/ EN60601 - 1 and ANSI/AAMI ES60601 - 1version three with 2 x MOPP level and ultra-low leakage current (< 100μ A). It is very suitable for BF (patient contact) type medical device or relevant equipment.

Features

3.43"x2.05" compact size
PCB chassis or screw terminal mounting version
Medical safety approved (2 x MOPP) according to ANSI/AAMI ES60601-1 and IEC/BS EN/EN60601-1
Suitable for BF application with appropriate system consideration
No load power consumption<0.1W
Extremely low leakage current
Wide operating temp. range -30 ~ +80℃
EMI Class B without additional components
Isolation Class Ⅱ
Protections: Short circuit / Overload / Over voltage
No minimum load required
Operating altitude up to 4000 meters( Note.7)
50W peak(10 sec.)
3 years warranty

Specifications

MPM-45-12STSpecifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE: 12V
CURRENT Peak(10 sec.): 4.13A
CURRENT Convection: 3.75A
RATED POWER Peak(10 sec.)^Note.2: 49.5W
RATED POWER Convection: 45W
RIPPLE & NOISE (max.)^Note.3: 120mVp-p
VOLTAGE TOLERANCE^Note.4: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 1000ms, 30ms/230VAC 1000ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 50ms/230VAC 12ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.5: 80 ~ 264VAC 113 ~ 370VDC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 91.5%
AC CURRENT (Typ.): 1.2A/115VAC 0.6A/230VAC
INRUSH CURRENT (Typ.): COLD START 30A/115VAC 60A/230VAC
LEAKAGE CURRENT (max.)^Note.6: Touch current <100μA/264VAC

PROTECTION

OVERLOAD: 115% ~ 135% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 12.6 ~ 16.2V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: -30 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP.: -40 ~ +85℃
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃)
SOLDERING TEMPERATURE: Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.)
VIBRATION: Blank:10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes ST:10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes
OPERATING ALTITUDE^Note.7: 4000 meters / OVCⅡ

SAFETY & EMC (Note 8)

SAFETY STANDARDS: IEC 60601-1:2005+A1, TUV BS EN/ EN 60601-1:2006+A1+A12+A2, ANSI/AAMI ES60601-1:2005+A2 CAN/CSA C22.2 No. 60601-1:2014+A2, EAC TP TC 004 approved; Design refer to BS EN/EN60335-1(by request)
ISOLATION LEVEL: Primary-Secondary: 2xMOPP
WITHSTAND VOLTAGE: I/P-O/P:4KVAC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55011 (CISPR11) Class B
Radiated BS EN/EN55011 (CISPR11) Class B
Harmonic Current BS EN/EN61000-3-2 Class A
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035, BS EN/EN60601-1-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility BS EN/EN61000-4-3 Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts BS EN/EN61000-4-4 Level 3, 2KV
Surge susceptibility BS EN/EN61000-4-5 Level 3, 1KV/Line-Line
Conducted susceptibility BS EN/EN61000-4-6 Level 3, 10V
Magnetic field immunity BS EN/EN61000-4-8 Level 4, 30A/m
Voltage dip, interruption BS EN/EN61000-4-11 >95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55011 (CISPR11)	Class B
Radiated	BS EN/EN55011 (CISPR11)	Class B
Harmonic Current	BS EN/EN61000-3-2	Class A
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 4, 15KV air; Level 4, 8KV contact
RF field susceptibility	BS EN/EN61000-4-3	Level 3, 10V/m( 80MHz~2.7GHz ) Table 9, 9~28V/m( 385MHz~5.78GHz )
EFT bursts	BS EN/EN61000-4-4	Level 3, 2KV
Surge susceptibility	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line
Conducted susceptibility	BS EN/EN61000-4-6	Level 3, 10V
Magnetic field immunity	BS EN/EN61000-4-8	Level 4, 30A/m
Voltage dip, interruption	BS EN/EN61000-4-11	>95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

OTHERS

MTBF: 4590.4K hrs min. Telcordia SR-332 (Bellcore) ; 563.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: PCB mounting style : 87*52*29.5mm (L*W*H) Screw terminal style : 109*52*33.5mm (L*W*H)
PACKING: PCB mounting style : 0.185Kg;60pcs/12.1Kg/0.94CUFT Screw terminal style :0.206Kg;50pcs/11.3Kg/0.56CUFT

Test conditions and notes8

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. 33% Duty cycle maximum within every 30 seconds. Average output power should not exceed the rated power.
3. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
4. Tolerance : includes set up tolerance, line regulation and load regulation.
5. Derating may be needed under low input voltages. Please check the derating curve for more details.
6. Touch current was measured from primary input to DC output.
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).
8. The power supply is considered a component which will be installed into a final equipment. 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 )

Technical drawings

MPM-45-12ST Block Diagram — Block Diagram

MPM-45-12ST Mechanical Specification — Mechanical Specification

Typical applications

Portable medical device
Mobile clinical workstation
Medical computer monitor
Medical examination instrument

Downloads

Certificates6

Mean Well MPM-45-65-90-EMC Certificate PDF Download

Mean Well MPM-45-65-90-CB Certificate PDF Download

Mean Well MPM-45-65-90-TUV Certificate PDF Download

Mean Well MPM-45-65-90-CE-dec Certificate PDF Download

Mean Well MPM-45-65-90-UK-dec Certificate PDF Download

Mean Well 0147476-EAC Certificate PDF Download

Test reports1

Mean Well MPM-45-12 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MPM-45-12ST for a 12V industrial control board or compact automation assembly?

Yes, if the load needs constant voltage 12V and stays at or below 45W and 3.75A. It accepts 80-264VAC input, which supports a broad AC input range for panel-based equipment.

Is the MPM-45-12ST a fit for 12V embedded systems that need medical safety approval?

It can be considered for 12V embedded equipment where the listed medical safety approved feature is relevant, provided the load remains within 45W and 3.75A. The output is constant voltage, so it is intended for devices designed for a regulated 12V input.

Can this model power a 12V networking, gateway, or monitoring device in an equipment enclosure?

It can support 12V gateway, monitoring, or communications hardware if the total demand does not exceed 3.75A and 45W. The less than 0.1W no-load power consumption may be useful in continuously energized enclosures.

Is the MPM-45-12ST meant for outdoor use or wide-temperature indoor environments?

Its specified operating range is -30°C to +80°C, which supports use across a broad temperature range. However, no IP rating is listed, so outdoor suitability cannot be confirmed from the provided specifications.

What is the difference between the MPM-45-12ST and the other 45W MPM power supplies?

The 45W group includes MPM-45-12 and MPM-45-12ST at 45W, 12V, 3.75A; MPM-45-15 and MPM-45-15ST at 45W, 15V, 3A; MPM-45-24 and MPM-45-24ST at 45.1W, 24V, 1.88A; MPM-45-48 and MPM-45-48ST at 45.1W, 48V, 0.94A; and MPM-45-5 and MPM-45-5ST at 40W, 5V, 8A. For this ST version specifically, the listed dimensions are 109.0 x 52.0 x 33.5 mm and the weight is 0.206 kg.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well MPM-45-5ST Power Supply 45W 5V 8A	40W	5V	8A	IP20	$27.07	View
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Mean Well MPM-45-15ST Power Supply 45W 15V 3A	45W	15V	3A	IP20	$27.07	View
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Mean Well MPM-45-12 Power Supply 45W 12V 3.75A	45W	12V	3.75A	IP20	$24.96	View

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