MEAN WELL MFM-10 series: Open-Frame Medical AC/DC Power Supply - MFM-10-3.3

Description

MEAN WELL MFM-10-3.3 is an open-frame PCB-mount medical AC/DC power module with a 3.3 V output rated at 2.5 A and 8.3 W. It accepts 80–264 VAC or 113–370 VDC, requires no minimum load, and provides Class II construction with 2 × MOPP primary-secondary isolation. Peak operation and BF applications are subject to the conditions below.

Product Datasheet

Download MEAN WELL MFM-10 Datasheet (PDF)

The MFM-10 section is on PDF pages 5, 6, 7, 8. Refer to the complete mechanical drawings and notes when planning installation.

Model and Medical Application

Exact model MFM-10-3.3; open-frame on-board AC/DC power module. The final model-code field identifies the nominal DC output voltage.
Electrical protection class Class II, double insulation, no functional-ground (FG) connection.
Patient-protection insulation Primary-to-secondary isolation: 2 × MOPP.
BF application Suitable for BF applications with appropriate system consideration; the power module alone does not certify a completed medical device as BF.
Typical applications Portable medical devices, mobile clinical workstations, medical computer monitors and examination instruments.

This compact open-frame module is intended for integration onto the equipment PCB. Apply the medical-system insulation and installation requirements to the complete assembly.

Model-Specific DC Output

DC voltage 3.3 V.
Rated continuous current 2.5 A.
Current range 0–2.5 A; no minimum load required.
Rated output power 8.3 W, as listed for this exact model.
Peak current 2.75 A, subject to the peak-load conditions below.
Peak output power 9 W, for a maximum of 10 seconds and subject to all duty-cycle and average-power limits.
Ripple and noise, maximum 120 mVp-p.
Voltage tolerance ±2.5%; includes set-up tolerance, line regulation and load regulation.
Line regulation ±0.3%.
Load regulation ±0.5%.
Efficiency, typical 78%.

Peak loading is limited to 33% maximum duty cycle within every 30 seconds, and average output power must not exceed this model’s rated output power. The 10-second peak specification does not remove either limit; reduce the duty further when the remaining load would otherwise exceed the permitted average.

Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors in parallel.

Input and Start-Up

AC input range 80–264 VAC, subject to low-input derating.
DC input range 113–370 VDC.
AC frequency 47–440 Hz.
Input current, typical 0.3 A at 115 VAC; 0.2 A at 230 VAC.
Cold-start inrush, typical 25 A at 115 VAC; 45 A at 230 VAC.
No-load input consumption Less than 0.075 W.
Set-up and rise time 1000 ms set-up and 30 ms rise at both 230 VAC and 115 VAC, at full load.
Hold-up time, typical 40 ms at 230 VAC; 8 ms at 115 VAC, at full load.
Touch current Less than 80 µA at 264 VAC; measured from primary input to DC output.
Switching frequency reference 100 kHz in the block diagram.

Unless specifically stated otherwise, catalogue parameters are measured at 230 VAC input, rated load and 25°C ambient. Typical figures are not guaranteed minimum performance values.

Protection

Short circuit and overload Overload protection operates at 110–180% of rated output power. Hiccup mode recovers automatically after the fault is removed; short-circuit protection is also listed.
Overvoltage threshold 3.8–5 V.
Overvoltage action Output voltage shuts off and is clamped by a zener diode.
Overtemperature action Output shuts down and recovers automatically after temperature falls.

The overload-protection threshold is not a continuous output rating or an additional peak-load allowance. Observe the separately stated model-specific output and peak-load limits.

Cooling, Derating and Environment

Working ambient range -30 to +85°C, with load derating.
Cooling and curve orientation Fanless operation; the published ambient/load curve is for horizontal mounting.
Temperature/load curve for this model -30°C: 100%; 50°C: 100%; 70°C: 50%; 80°C: 30%; 85°C: 20%.
Curve selection All voltages output-voltage curve.
Input-voltage/load curve At 60 Hz: 80% load at 80 VAC, rising to 100% at 100 VAC; 100% plateau from 100 to 264 VAC.
Operating humidity 20–90% RH, non-condensing.
Storage conditions −40 to +100°C; 10–95% RH, non-condensing.
Temperature coefficient ±0.03%/°C over 0–50°C.
Vibration 10–500 Hz, 5 G, 10 minutes per cycle, 60 minutes each along X, Y and Z.
Operating altitude Up to 5,000 m.
High-altitude temperature reduction Above 2,000 m, reduce the allowable ambient temperature by 3.5°C per additional 1,000 m for this fanless module.

Use the complete temperature and input-voltage curves for intermediate conditions, and apply input, temperature, altitude and peak-load restrictions together. A wide operating-temperature range does not mean full rated load throughout that range.

Mechanical Dimensions and PCB Connections

Dimensions, L × W × H 42 × 22.3 × 20.5 mm, as listed in the specification.
Drawing units and tolerance Millimetres; general tolerance ±0.5 mm.
Input pins, top view With the input pins on the left as drawn: upper pin AC/N; lower pin AC/L.
Output pins, top view With the output pins on the right as drawn: upper pin +V; lower pin −V.
Pin spacing Input pair 10.75 mm; output pair 8 mm.
Pin-to-board edge references Each pin column is 1.75 mm from its adjacent left or right board edge; both lower pins are 1.9 mm from the bottom edge in the top view.
Side-view detail The side view marks a 16 mm vertical dimension and terminal-detail dimensions of 4.5 mm, 3.5 mm, 1.8 mm and 1.05 mm. Use the full drawing for the footprint and terminal profile.
Soldering limits Wave soldering: 265°C for 5 seconds maximum; manual soldering: 390°C for 3 seconds maximum.

Use the stated top-view orientation when locating AC and DC connections. Follow the manufacturer’s installation instructions for the completed assembly. The assigned pages identify no separate orderable mating connector, mounting bracket or accessory kit. FS1 is a drawing reference, not a complete spare-part ordering code.

Safety and EMC Conditions

Listed medical safety approvals IEC60601-1:2005+A1; TUV BS EN/EN60601-1:2006+A1+A12+A2; ANSI/AAMI ES60601-1:2005+A2; CAN/CSA C22.2 No.60601-1:2014+A2; EAC TP TC004.
Other safety applicability Design reference to BS EN/EN60335-1 is available by request; the specification does not list this as the standard approved configuration.
Input-to-output withstand voltage 4 kVAC.
Input-to-output insulation resistance 100 MΩ at 500 VDC, 25°C and 70% RH.
Conducted and radiated emissions BS EN/EN55011 (CISPR11), Class B, for Class II configuration.
Harmonic current BS EN/EN61000-3-2, Class A.
Voltage flicker BS EN/EN61000-3-3 is listed; no numerical test level is specified.
Immunity framework BS EN/EN55035 and BS EN/EN60601-1-2.
ESD BS EN/EN61000-4-2: Level 4, 15 kV air and 8 kV contact.
RF field susceptibility BS EN/EN61000-4-3: Level 3, 10 V/m over 80 MHz–2.7 GHz; Table 9 proximity-field levels 9–28 V/m over 385 MHz–5.78 GHz.
EFT / burst BS EN/EN61000-4-4: Level 3, 2 kV.
Surge BS EN/EN61000-4-5: Level 3, 1 kV line-to-line.
Conducted susceptibility BS EN/EN61000-4-6: Level 3, 10 V.
Magnetic-field immunity BS EN/EN61000-4-8: Level 4, 30 A/m.
Voltage dips and interruptions BS EN/EN61000-4-11: 100% dip for 1 period; 30% dip for 25 periods; 100% interruption for 250 periods.

This power supply is a component for installation in final equipment. Reconfirm the completed equipment’s EMC compliance and medical-system suitability; component approval and primary-secondary insulation do not establish every protection measure of the complete system.

Weight, Reliability and Catalogue Reference

Single-unit catalogue weight 18 g (0.018 kg), explicitly listed in PACKING. This is a catalogue unit-weight reference, not a measured shipping weight.
Packing reference 270 pieces / 5.8 kg / 0.94 CUFT.
Minimum MTBF estimates 9314.1 thousand hours by Telcordia SR-332 (Bellcore); 1756.2 thousand hours by MIL-HDBK-217F at 25°C.
Catalogue warranty 3-year manufacturer warranty, subject to the applicable terms.
Specification version MFM-10-SPEC dated 2024-10-30; combined catalogue pages 5–8.
Rating convention The displayed power, current and peak values preserve the catalogue’s printed precision.

MTBF values are statistical estimates under the stated methods and are not a guaranteed operating life.

MEAN WELL MFM-10 series: Open-Frame Medical AC/DC Power Supply - MFM-10-3.3

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MEAN WELL MFM-10-3.3 is an open-frame PCB-mount medical AC/DC power module with a 3.3 V output rated at 2.5 A... Read more

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    Description

    MEAN WELL MFM-10-3.3 is an open-frame PCB-mount medical AC/DC power module with a 3.3 V output rated at 2.5 A and 8.3 W. It accepts 80–264 VAC or 113–370 VDC, requires no minimum load, and provides Class II construction with 2 × MOPP primary-secondary isolation. Peak operation and BF applications are subject to the conditions below.

    Product Datasheet

    Download MEAN WELL MFM-10 Datasheet (PDF)

    The MFM-10 section is on PDF pages 5, 6, 7, 8. Refer to the complete mechanical drawings and notes when planning installation.

    Model and Medical Application

    Exact model MFM-10-3.3; open-frame on-board AC/DC power module. The final model-code field identifies the nominal DC output voltage.
    Electrical protection class Class II, double insulation, no functional-ground (FG) connection.
    Patient-protection insulation Primary-to-secondary isolation: 2 × MOPP.
    BF application Suitable for BF applications with appropriate system consideration; the power module alone does not certify a completed medical device as BF.
    Typical applications Portable medical devices, mobile clinical workstations, medical computer monitors and examination instruments.

    This compact open-frame module is intended for integration onto the equipment PCB. Apply the medical-system insulation and installation requirements to the complete assembly.

    Model-Specific DC Output

    DC voltage 3.3 V.
    Rated continuous current 2.5 A.
    Current range 0–2.5 A; no minimum load required.
    Rated output power 8.3 W, as listed for this exact model.
    Peak current 2.75 A, subject to the peak-load conditions below.
    Peak output power 9 W, for a maximum of 10 seconds and subject to all duty-cycle and average-power limits.
    Ripple and noise, maximum 120 mVp-p.
    Voltage tolerance ±2.5%; includes set-up tolerance, line regulation and load regulation.
    Line regulation ±0.3%.
    Load regulation ±0.5%.
    Efficiency, typical 78%.

    Peak loading is limited to 33% maximum duty cycle within every 30 seconds, and average output power must not exceed this model’s rated output power. The 10-second peak specification does not remove either limit; reduce the duty further when the remaining load would otherwise exceed the permitted average.

    Ripple and noise are measured at 20 MHz bandwidth with a 12-inch twisted pair terminated by 0.1 µF and 47 µF capacitors in parallel.

    Input and Start-Up

    AC input range 80–264 VAC, subject to low-input derating.
    DC input range 113–370 VDC.
    AC frequency 47–440 Hz.
    Input current, typical 0.3 A at 115 VAC; 0.2 A at 230 VAC.
    Cold-start inrush, typical 25 A at 115 VAC; 45 A at 230 VAC.
    No-load input consumption Less than 0.075 W.
    Set-up and rise time 1000 ms set-up and 30 ms rise at both 230 VAC and 115 VAC, at full load.
    Hold-up time, typical 40 ms at 230 VAC; 8 ms at 115 VAC, at full load.
    Touch current Less than 80 µA at 264 VAC; measured from primary input to DC output.
    Switching frequency reference 100 kHz in the block diagram.

    Unless specifically stated otherwise, catalogue parameters are measured at 230 VAC input, rated load and 25°C ambient. Typical figures are not guaranteed minimum performance values.

    Protection

    Short circuit and overload Overload protection operates at 110–180% of rated output power. Hiccup mode recovers automatically after the fault is removed; short-circuit protection is also listed.
    Overvoltage threshold 3.8–5 V.
    Overvoltage action Output voltage shuts off and is clamped by a zener diode.
    Overtemperature action Output shuts down and recovers automatically after temperature falls.

    The overload-protection threshold is not a continuous output rating or an additional peak-load allowance. Observe the separately stated model-specific output and peak-load limits.

    Cooling, Derating and Environment

    Working ambient range -30 to +85°C, with load derating.
    Cooling and curve orientation Fanless operation; the published ambient/load curve is for horizontal mounting.
    Temperature/load curve for this model -30°C: 100%; 50°C: 100%; 70°C: 50%; 80°C: 30%; 85°C: 20%.
    Curve selection All voltages output-voltage curve.
    Input-voltage/load curve At 60 Hz: 80% load at 80 VAC, rising to 100% at 100 VAC; 100% plateau from 100 to 264 VAC.
    Operating humidity 20–90% RH, non-condensing.
    Storage conditions −40 to +100°C; 10–95% RH, non-condensing.
    Temperature coefficient ±0.03%/°C over 0–50°C.
    Vibration 10–500 Hz, 5 G, 10 minutes per cycle, 60 minutes each along X, Y and Z.
    Operating altitude Up to 5,000 m.
    High-altitude temperature reduction Above 2,000 m, reduce the allowable ambient temperature by 3.5°C per additional 1,000 m for this fanless module.

    Use the complete temperature and input-voltage curves for intermediate conditions, and apply input, temperature, altitude and peak-load restrictions together. A wide operating-temperature range does not mean full rated load throughout that range.

    Mechanical Dimensions and PCB Connections

    Dimensions, L × W × H 42 × 22.3 × 20.5 mm, as listed in the specification.
    Drawing units and tolerance Millimetres; general tolerance ±0.5 mm.
    Input pins, top view With the input pins on the left as drawn: upper pin AC/N; lower pin AC/L.
    Output pins, top view With the output pins on the right as drawn: upper pin +V; lower pin −V.
    Pin spacing Input pair 10.75 mm; output pair 8 mm.
    Pin-to-board edge references Each pin column is 1.75 mm from its adjacent left or right board edge; both lower pins are 1.9 mm from the bottom edge in the top view.
    Side-view detail The side view marks a 16 mm vertical dimension and terminal-detail dimensions of 4.5 mm, 3.5 mm, 1.8 mm and 1.05 mm. Use the full drawing for the footprint and terminal profile.
    Soldering limits Wave soldering: 265°C for 5 seconds maximum; manual soldering: 390°C for 3 seconds maximum.

    Use the stated top-view orientation when locating AC and DC connections. Follow the manufacturer’s installation instructions for the completed assembly. The assigned pages identify no separate orderable mating connector, mounting bracket or accessory kit. FS1 is a drawing reference, not a complete spare-part ordering code.

    Safety and EMC Conditions

    Listed medical safety approvals IEC60601-1:2005+A1; TUV BS EN/EN60601-1:2006+A1+A12+A2; ANSI/AAMI ES60601-1:2005+A2; CAN/CSA C22.2 No.60601-1:2014+A2; EAC TP TC004.
    Other safety applicability Design reference to BS EN/EN60335-1 is available by request; the specification does not list this as the standard approved configuration.
    Input-to-output withstand voltage 4 kVAC.
    Input-to-output insulation resistance 100 MΩ at 500 VDC, 25°C and 70% RH.
    Conducted and radiated emissions BS EN/EN55011 (CISPR11), Class B, for Class II configuration.
    Harmonic current BS EN/EN61000-3-2, Class A.
    Voltage flicker BS EN/EN61000-3-3 is listed; no numerical test level is specified.
    Immunity framework BS EN/EN55035 and BS EN/EN60601-1-2.
    ESD BS EN/EN61000-4-2: Level 4, 15 kV air and 8 kV contact.
    RF field susceptibility BS EN/EN61000-4-3: Level 3, 10 V/m over 80 MHz–2.7 GHz; Table 9 proximity-field levels 9–28 V/m over 385 MHz–5.78 GHz.
    EFT / burst BS EN/EN61000-4-4: Level 3, 2 kV.
    Surge BS EN/EN61000-4-5: Level 3, 1 kV line-to-line.
    Conducted susceptibility BS EN/EN61000-4-6: Level 3, 10 V.
    Magnetic-field immunity BS EN/EN61000-4-8: Level 4, 30 A/m.
    Voltage dips and interruptions BS EN/EN61000-4-11: 100% dip for 1 period; 30% dip for 25 periods; 100% interruption for 250 periods.

    This power supply is a component for installation in final equipment. Reconfirm the completed equipment’s EMC compliance and medical-system suitability; component approval and primary-secondary insulation do not establish every protection measure of the complete system.

    Weight, Reliability and Catalogue Reference

    Single-unit catalogue weight 18 g (0.018 kg), explicitly listed in PACKING. This is a catalogue unit-weight reference, not a measured shipping weight.
    Packing reference 270 pieces / 5.8 kg / 0.94 CUFT.
    Minimum MTBF estimates 9314.1 thousand hours by Telcordia SR-332 (Bellcore); 1756.2 thousand hours by MIL-HDBK-217F at 25°C.
    Catalogue warranty 3-year manufacturer warranty, subject to the applicable terms.
    Specification version MFM-10-SPEC dated 2024-10-30; combined catalogue pages 5–8.
    Rating convention The displayed power, current and peak values preserve the catalogue’s printed precision.

    MTBF values are statistical estimates under the stated methods and are not a guaranteed operating life.

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