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Mean Well MFM-20-12 Power Supply 20W 12V 1.8A

Name: Mean Well MFM-20-12 Power Supply 20W 12V 1.8A
Brand: Mean Well
SKU: MFM-20-12
Price: 13.96 USD
Availability: InStock

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

SKU MFM-20-12

$13.96 USD

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Overview

MFM-20-12 is the 12V output model of this series: rated current 1.8A, rated power 21.6W, typical efficiency 85.5%.

MFM-20 is a 20 W high density and small size ( 49 *2 3 . 8 * 23 mm) AC/DC o n boa r d type medical power supply series. It features the operation for 80~ 264 VAC, a low no load power consumption less than 0. 1 W , a high efficiency up to 87 %, Class Ⅱ (no FG) double insulation, outstanding dissipation , 5G anti-vibration, high EMC performance, 4KVAC isolation, etc. The design observes IEC / BS EN/EN60601 - 1 and ANSI/AAMI ES60601 - 1 version three with 2xMOPP level and ultra-low leakage current(< 8 0μA). It is very suitable for BF (patient contact) type medical device or relevant equipment.

Features

1.93"x0.94" compact size
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 -35 ~ +85℃
EMI class B for class Ⅱ configuration
Protections: Short circuit / Overload / Over voltage / Over temperature
No minimum load required
3 years warranty

Specifications

MFM-20-12Specifications from the official datasheet (2024-10-30 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 1.8A
CURRENT RANGE^Note.2: 0 ~ 1.8A
PEAK CURRENT: 1.98A
RATED POWER: 21.6W
PEAK LOAD(10sec.)^Note.3: 23.8W
RIPPLE & NOISE (max.)^Note.4: 150mVp-p
VOLTAGE TOLERANCE^Note.5: ±2.0%
LINE REGULATION: ±0.3%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME: 1500ms, 30ms/230VAC 1500ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.): 40ms/230VAC 10ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.6: 80 ~ 264VAC 113V~370VDC
FREQUENCY RANGE: 47 ~ 440Hz
EFFICIENCY (Typ.): 85.5%
AC CURRENT (Typ.): 0.75A/115VAC 0.5A/230VAC
INRUSH CURRENT (Typ.): COLD START 20A/115VAC 45A/230VAC
LEAKAGE CURRENT (max.)^Note.7: Touch current <80μA/264VAC

PROTECTION

OVERLOAD: 110% ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 13.8 ~ 16.2V Protection type : Shut off o/p voltage, clamping by zener diode
OVER TEMPERATURE: Protection type : Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.: -35 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
SOLDERING TEMPERATURE: Wave soldering: 265℃,5s (max.); Manual soldering: 390℃,3s (max.)
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes
OPERATING ALTITUDE^Note.8: 5000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC 60601-1:2005+A1,TUV BS EN/ EN 60601-1:2006+A1+A12+A2,ANSI/AAMI ES60601-1:2005/A2:2021, CAN/CSA C22.2 No. 60601-1:2014+A2,IEC 60335-1:2010/AMD2:2016, Dekra BS EN/ EN 60335-1:2012+A11+A13+A1+A14+A2+A15 ,EAC TP TC 004 approved
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 emission BS EN/EN55011 (CISPR11) Class B
Radiated emission BS EN/EN55011 (CISPR11) Class B
Harmonic current BS EN/EN61000-3-2 Class A
Voltage flicker BS EN/EN61000-3-3
EMC IMMUNITY^Note.9: 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/EN61000-4-11 100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

Parameter	Standard	Test Level
Conducted emission	BS EN/EN55011 (CISPR11)	Class B
Radiated emission	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	100% dip 1 periods, 30% dip 25 periods, 100% interruptions 250 periods

OTHERS

MTBF: 7319.8K hrs min. Telcordia SR-332 (Bellcore) ; 1210.1K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 49*23.8*23mm (L*W*H) or 1.93 ″*0.94″*0.91″ inch
PACKING: 0.028Kg; 200pcs/6.6Kg/0.94CUFT

Test conditions and notes9

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
2. No minimum load required.
3. 33% Duty cycle maximum within every 30 seconds. Average output power should not exceed the rated power.
4. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
5. Tolerance : includes set up tolerance, line regulation and load regulation.
6. Derating may be needed under low input voltages. Please check the derating curve for more details.
7. Touch current was measured from primary input to DC output.
8. 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).
9. 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

MFM-20-12 Derating Curve — Derating Curve

MFM-20-12 Mechanical Specification — Mechanical Specification

Typical applications

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

Downloads

Certificates8

Mean Well MFM-MPM-15-20-TUV Certificate PDF Download

Mean Well MFM-MPM-15-20-CB Certificate PDF Download

Mean Well MFM-MPM-15-20-CB(60335) Certificate PDF Download

Mean Well MFM-MPM-15-20-EMC Certificate PDF Download

Mean Well MFM-MPM-15-20-CE-dec Certificate PDF Download

Mean Well MFM-MPM-15-20-UK-dec Certificate PDF Download

Mean Well 0147476-EAC Certificate PDF Download

Mean Well E227340 UL Certificate PDF Download

Test reports1

Mean Well MFM-20-12 Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the MFM-20-12 for a 12V PLC accessory, relay bank, or sensor group?

Yes, this model is a constant-voltage 12V supply rated for 1.8A and 21.6W, which fits small 12V automation loads. It is suitable where the combined current stays within 1.8A and the total power stays within 21.6W.

Is the MFM-20-12 a good fit for embedded 12V control electronics in compact equipment?

It is intended for board-level power use because it is a PCB type supply and measures 49.0 x 23.8 x 23.0 mm. For embedded 12V electronics, the important electrical limit is the 12V constant-voltage output at up to 1.8A.

Can this model power a low-power 12V industrial HMI or monitoring device?

It can support compact 12V monitoring or interface hardware that does not exceed 21.6W total load. The supply provides 12V at 1.8A and accepts a wide 80-264VAC input range for global AC systems.

Would the MFM-20-12 work for a small medical or laboratory device with 12V internals?

It can be considered for low-power 12V equipment because it is medical safety approved (2 x MOPP) to IEC/EN 60601-1 and ANSI/AAMI ES60601-1, with CAN/CSA C22.2 No. 60601-1 and EAC TP TC 004 also listed. The available output is 21.6W, so the 12V load must remain within 1.8A.

Is the MFM-20-12 suitable for outdoor applications or only protected indoor use?

The operating temperature range is -35C to +85C, with output derating required at higher ambient temperatures (see the derating curve), so it suits protected equipment. No IP rating is listed, so this product is not specified here for direct outdoor exposure or water-prone environments.

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