MEAN WELL MFM-30-48 is an open-board, pin-type medical AC/DC power supply providing 48 V, 0.63 A and 30.2 W catalogue-rated output. Its compact PCB-mount design uses Class II construction without FG and 2 MOPP primary-secondary isolation. BF applications require appropriate system consideration; observe the peak, thermal and input-voltage limits below.
Product Datasheet
Download MEAN WELL MFM-30 Datasheet (PDF)
The MFM-30 section is on PDF pages 17, 18, 19, 20. Refer to the complete mechanical drawings and notes when planning installation.
Model Code and Application
Complete model
MFM-30-48
Series
MFM-30 on-board medical AC/DC power supply.
Output-voltage code
48 V nominal DC output.
Mounting
Pin-type PCB mounting, as shown in the top-view connection drawing.
Typical applications include portable medical devices, mobile clinical workstations, medical computer monitors and medical examination instruments. The power supply is a component for integration into suitable final equipment.
DC Output and Peak Capability
Nominal DC voltage
48 V.
Rated current
0.63 A.
Current range
0–0.63 A; no minimum load required.
Catalogue-rated power
30.2 W.
Peak current / peak power
0.73 A / 35 W, for up to 10 seconds and subject to the duty and average-power limits.
Ripple and noise, maximum
200 mVp-p.
Voltage tolerance
±2.0%, including setup tolerance, line regulation and load regulation.
Line / load regulation
±0.5% / ±0.5%.
Maximum peak duty cycle is 33% within every 30 seconds. Average output power must not exceed the rated power. Apply the listed current, power and voltage limits together; peak ratings are not continuous-output ratings.
Ripple and noise are measured at 20 MHz bandwidth using a 12-inch twisted-pair wire terminated with 0.1 µF and 47 µF capacitors in parallel.
Input and Timing
Input voltage
80–264 V AC.
Frequency
47–63 Hz.
Efficiency, typical
91%, at the default catalogue test conditions.
AC input current, typical
0.75 A at 115 V AC; 0.5 A at 230 V AC.
Cold-start inrush, typical
25 A at 115 V AC; 45 A at 230 V AC.
Setup / rise time
500 ms / 30 ms at both 230 V AC and 115 V AC, full load.
Hold-up time, typical
40 ms at 230 V AC; 12 ms at 115 V AC, full load.
No-load power consumption
Less than 0.075 W.
Switching-frequency reference
65 kHz in the block diagram.
Protection and Medical Isolation
Short circuit
Short-circuit protection is listed in the catalogue.
Overload
115–165% of rated output power; hiccup mode with automatic recovery after the fault is removed.
Overvoltage
50.4–64 V; output shutdown, re-power to recover.
Touch current
Less than 80 µA at 264 V AC, measured from primary input to DC output.
Insulation construction
Class II, double insulation, without FG.
Primary-secondary isolation
2 × MOPP.
Withstand voltage
Input to output: 4 kV AC.
Isolation resistance
Input to output: 100 MΩ at 500 V DC, 25°C and 70% RH.
Suitability for BF applications requires appropriate system consideration. Component insulation and leakage-current ratings do not by themselves certify the assembled medical device.
Cooling and Operating Limits
Operating ambient
−40 to +85°C, subject to derating.
Temperature derating
Horizontal mounting: 100% load from −40 to +60°C, then along the plotted segments to 80% at +70°C, 50% at +80°C and 40% at +85°C.
Input-voltage derating
At 60 Hz, the AC-input curve gives 80% load at 80 V AC, rising to 100% at 100 V AC and remaining at 100% through 264 V AC.
Operating humidity
20–90% RH, non-condensing.
Storage
−40 to +85°C; 10–95% RH.
Temperature coefficient
±0.03%/°C over 0–60°C.
Operating altitude
Up to 5000 m, subject to the altitude derating condition.
Altitude derating
Above 2000 m (6500 ft), reduce allowable ambient temperature by 3.5°C per additional 1000 m for fanless models.
Vibration
3 G, 10–500 Hz; 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.
Apply input-voltage, ambient-temperature and altitude limits together. The upper ambient limit does not mean full output is available at that temperature. Keep peak operation within its duration, duty-cycle and average-power limits as well.
Dimensions, Pins and Installation
Catalogue dimensions (L × W × H)
65.5 × 35 × 23 mm; follow the full side profile and pin projection in the mechanical drawing.
Drawing tolerance
±1 mm.
Top-view pin assignment
Pin 1: ACL; pin 2: ACN; pin 3: +V; pin 4: −V.
Connection orientation
In the illustrated top view, ACL is at the upper left and ACN below it; +V is at the upper right and −V below it.
Pin-position dimensions
AC pins are spaced 30 mm; output pins are spaced 9 mm. The drawing marks 2 mm from each side edge to the pin column and 2.5 mm at the indicated top/bottom edge references.
Side-view pin details
The below-board pin projection is marked 8 ±1 mm, with 4.5 mm and 3.5 mm sections. The drawing also marks 1.8 mm and 1.05 mm across the stepped pin profile, and 18.5 mm above the board reference. Use the drawing for the exact measurement locations.
Soldering limits
Wave soldering: 265°C for 5 seconds maximum. Manual soldering: 390°C for 3 seconds maximum.
Use the pin layout and manufacturer installation instructions when designing the host PCB and final equipment. The catalogue does not list a separate mating connector, mounting kit or accessory order code for this pin-type model; no screw-terminal or DIN-rail version is implied.
Safety Standards and EMC
Medical 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.
Additional design option
Design reference to BS EN/EN60335-1 is by request; it is not an additional standard approval claim for this supplied model.
Conducted / radiated emissions
BS EN/EN55011 (CISPR11), Class B; the feature statement specifies Class B for Class II configuration.
Harmonic current / voltage flicker
BS EN/EN61000-3-2, Class A / BS EN/EN61000-3-3.
Immunity standards
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, -4-3: Level 3, 10 V/m at 80 MHz–2.7 GHz; Table 9, 9–28 V/m at 385 MHz–5.78 GHz. EFT, -4-4: Level 3, 2 kV. Surge, -4-5: Level 3, 1 kV line-to-line. Conducted immunity, -4-6: Level 3, 10 V. Magnetic-field immunity, -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 and 100% interruption for 250 periods.
The power supply is a component. Re-confirm EMC compliance in the final equipment according to the manufacturer guidance for testing component power supplies.
Weight, Reliability and Catalogue Notes
Catalogue unit-weight reference
53 g, converted from the explicit 0.053 kg PACKING reference per unit. This is not a measured net weight or shipping weight.
MTBF
6325.8 K hours minimum, Telcordia SR-332 (Bellcore); 778.9 K hours minimum, MIL-HDBK-217F at 25°C.
Default test conditions
230 V AC input, rated load and 25°C ambient unless otherwise specified.
Manufacturer warranty statement
The catalogue lists three years; manufacturer terms apply.
Catalogue pages and version
MFM-30-SPEC, 2024-10-30; combined MFM catalogue pages 17–20.
MTBF is a statistical reliability reference, not a guaranteed service life. Unit weight is taken from the explicit per-unit entry, not calculated by dividing carton weight.
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