MEAN WELL MDS03 series: Single-output regulated medical DC/DC converter - MDS03F-15

Description

MDS03F-15 — Single-output regulated medical DC/DC converter

MEAN WELL MDS03F-15 is a 3 W isolated single-output regulated medical DC/DC converter with a 9–36 V DC input range and 15 V DC output. Its DIP 24 package, 4:1 input range, low patient leakage and reinforced isolation support medical and industrial system integration. Observe the temperature derating curve and external-component requirements.

Download MEAN WELL MDS03 Datasheet (PDF)
Download MEAN WELL EMI Testing Guidance (PDF)

MDS03 section: PDF pages 11–16, edition 2025-07-28. Refer to the model-selection table, pin layout and applicable derating curve for this complete model.

Model and electrical selection

Model and package MDS03F-15; 3 W isolated regulated medical DC/DC converter in a DIP 24 package with standard pinout. S denotes single output and D denotes dual output.
DC input range 9–36 V DC, 4:1 range; listed nominal inputs 12 / 24 V DC.
Input current 20 mA at no load; 320 mA at full load.
Output voltage 15 V DC.
Output current range 0–200 mA.
Rated output power 3 W total rated output; observe the stated voltage and current limits.
Efficiency 80% typical.
Capacitive load 47 µF maximum.
Input surge, filter and fuse 50 V DC input surge for 100 ms maximum. Pi-type input filter. Typical input-protection recommendation: 2 A slow-blow fuse.
Voltage accuracy and line regulation Voltage accuracy: ±2%. Line regulation: ±0.5%, measured from low line to high line at rated load.
Load regulation ±0.5%.
Ripple and noise 150 mVp-p. Measured with a 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
Switching frequency 250 kHz typical.

Protection and medical isolation

Short circuit and overload Continuous short-circuit protection with automatic recovery. Overload: 110–250% of rated output power, recovering automatically after the fault is removed.
Undervoltage lockout Start-up voltage: 8.8 V DC; shutdown voltage: 8 V DC, as listed in the common specification table.
Isolation and patient leakage Reinforced primary-to-secondary isolation: 2 × MOPP when the system input is 250 V AC, 50/60 Hz. The catalog specifies low patient leakage below 5 µA.
Withstand voltage Input to output: 6 kV DC or 4.2 kV AC.
Isolation resistance and capacitance Isolation resistance: 1,000 MΩ at 500 V DC, 25°C and 70% RH. Isolation capacitance: 20 pF typical.
Safety approvals IEC60601-1 (LVD), 3rd edition, and EAC TP TC 020/2011 approved. The catalog limits EAC TP TC 004 to the 48 V input type. Complete medical-equipment compliance must be assessed at system level.

EMC and circuit integration

EMC emissions BS EN/EN55011 conducted-emission entry: N/A. Radiated emissions: Class A without external EMC components; Class B requires the specified external circuit. Reconfirm final-equipment EMC.
EMC suggestion circuit The Class B suggestion circuit on PDF page 15 shows C1 and C2 each 10 µF / 50 V MLCC, L1 = 450 µH common-mode choke; C3 and C4 are marked X (not fitted). Follow the manufacturer circuit and verify the complete system with its actual load.
EMC immunity BS EN/EN61000-4-2: ±15 kV air; -4-3: 10 V/m; -4-4: ±2 kV; -4-5: ±2 kV line to line; -4-6: 10 Vrms (e.m.f.); -4-8: 30 A/m.

Thermal, environmental and assembly limits

Operating temperature and derating −40 to +90°C with free-air convection. The natural-convection curve shows full load through +71°C, 75% at +80°C and 50% at +90°C. The plot beyond +90°C does not extend the specified operating range.
Case temperature and humidity Case temperature: +105°C maximum. Working humidity: 20–90% RH, non-condensing.
Storage −55 to +125°C; 10–95% RH, non-condensing.
Temperature coefficient 0.05%/°C over 0–71°C.
Soldering At 1.5 mm from the case: 3–5 seconds, 265°C maximum.
Vibration 10–500 Hz, 2 G; 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.

Mechanical layout and pin assignment

Dimensions and case 31.8 × 20.3 × 12.2 mm (L × W × H); UL94V-0 plastic case.
Mechanical tolerances General x.x / x.xx dimensions: ±0.5 mm. Pin size: 0.6 ±0.10 mm; lead extension: 3.81 mm.
PCB footprint Top-view PCB layout: Ø0.8 mm holes (+0.2 / −0); 2.54 mm grid and 15.24 mm pin-row spacing. The body drawing gives a 2.06 mm end offset and a 5.08 mm span between pins 10 and 12 / pins 15 and 13. Verify orientation using the bottom-view module and top-view PCB drawings on PDF page 14.
Pin assignment Pin 1: +Vin; pins 10, 11 and 15: no pin; pin 12: −Vout; pin 13: +Vout; pins 23 and 24: −Vin.

Test conditions, packing and applications

Specification test conditions Unless otherwise stated: 12 V DC normal input for the F model, rated load, 25°C and 70% RH ambient.
MTBF Greater than 454 kh, MIL-HDBK-217F at 25°C.
Unit weight 17 g catalog packing reference per unit; not a separately measured net weight.
Bulk packing 15 units per tube, 750 units in 50 tubes maximum per carton. One tube gross weight: 310 g; carton gross weight: 16.1 kg. Carton: 620 × 230 × 230 mm. The packing illustration shows a 520 mm tube length and a 24 × 21.3 mm outer cross-section.
Typical applications Medical devices, oxygen monitors, CT scanning, medical carts, oral-care equipment and industrial control systems.
Manufacturer warranty The manufacturer datasheet states a 3-year warranty; confirm the applicable supply and service terms.

Component and system EMC guidance

Complete-system EMC verification Verify EMC with the converter installed in the final equipment and connected to a representative load. Wiring, assembly and the application affect the result. Follow the model's specified EMC conditions and any required external components; the linked EMI testing guidance does not certify the finished equipment.

MEAN WELL MDS03 series: Single-output regulated medical DC/DC converter - MDS03F-15

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MDS03F-15 — Single-output regulated medical DC/DC converter MEAN WELL MDS03F-15 is a 3 W isolated single-output regulated medical DC/DC converter... Read more

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    Description

    MDS03F-15 — Single-output regulated medical DC/DC converter

    MEAN WELL MDS03F-15 is a 3 W isolated single-output regulated medical DC/DC converter with a 9–36 V DC input range and 15 V DC output. Its DIP 24 package, 4:1 input range, low patient leakage and reinforced isolation support medical and industrial system integration. Observe the temperature derating curve and external-component requirements.

    Download MEAN WELL MDS03 Datasheet (PDF)
    Download MEAN WELL EMI Testing Guidance (PDF)

    MDS03 section: PDF pages 11–16, edition 2025-07-28. Refer to the model-selection table, pin layout and applicable derating curve for this complete model.

    Model and electrical selection

    Model and package MDS03F-15; 3 W isolated regulated medical DC/DC converter in a DIP 24 package with standard pinout. S denotes single output and D denotes dual output.
    DC input range 9–36 V DC, 4:1 range; listed nominal inputs 12 / 24 V DC.
    Input current 20 mA at no load; 320 mA at full load.
    Output voltage 15 V DC.
    Output current range 0–200 mA.
    Rated output power 3 W total rated output; observe the stated voltage and current limits.
    Efficiency 80% typical.
    Capacitive load 47 µF maximum.
    Input surge, filter and fuse 50 V DC input surge for 100 ms maximum. Pi-type input filter. Typical input-protection recommendation: 2 A slow-blow fuse.
    Voltage accuracy and line regulation Voltage accuracy: ±2%. Line regulation: ±0.5%, measured from low line to high line at rated load.
    Load regulation ±0.5%.
    Ripple and noise 150 mVp-p. Measured with a 20 MHz bandwidth using a 12-inch twisted pair terminated with 0.1 µF and 47 µF capacitors.
    Switching frequency 250 kHz typical.

    Protection and medical isolation

    Short circuit and overload Continuous short-circuit protection with automatic recovery. Overload: 110–250% of rated output power, recovering automatically after the fault is removed.
    Undervoltage lockout Start-up voltage: 8.8 V DC; shutdown voltage: 8 V DC, as listed in the common specification table.
    Isolation and patient leakage Reinforced primary-to-secondary isolation: 2 × MOPP when the system input is 250 V AC, 50/60 Hz. The catalog specifies low patient leakage below 5 µA.
    Withstand voltage Input to output: 6 kV DC or 4.2 kV AC.
    Isolation resistance and capacitance Isolation resistance: 1,000 MΩ at 500 V DC, 25°C and 70% RH. Isolation capacitance: 20 pF typical.
    Safety approvals IEC60601-1 (LVD), 3rd edition, and EAC TP TC 020/2011 approved. The catalog limits EAC TP TC 004 to the 48 V input type. Complete medical-equipment compliance must be assessed at system level.

    EMC and circuit integration

    EMC emissions BS EN/EN55011 conducted-emission entry: N/A. Radiated emissions: Class A without external EMC components; Class B requires the specified external circuit. Reconfirm final-equipment EMC.
    EMC suggestion circuit The Class B suggestion circuit on PDF page 15 shows C1 and C2 each 10 µF / 50 V MLCC, L1 = 450 µH common-mode choke; C3 and C4 are marked X (not fitted). Follow the manufacturer circuit and verify the complete system with its actual load.
    EMC immunity BS EN/EN61000-4-2: ±15 kV air; -4-3: 10 V/m; -4-4: ±2 kV; -4-5: ±2 kV line to line; -4-6: 10 Vrms (e.m.f.); -4-8: 30 A/m.

    Thermal, environmental and assembly limits

    Operating temperature and derating −40 to +90°C with free-air convection. The natural-convection curve shows full load through +71°C, 75% at +80°C and 50% at +90°C. The plot beyond +90°C does not extend the specified operating range.
    Case temperature and humidity Case temperature: +105°C maximum. Working humidity: 20–90% RH, non-condensing.
    Storage −55 to +125°C; 10–95% RH, non-condensing.
    Temperature coefficient 0.05%/°C over 0–71°C.
    Soldering At 1.5 mm from the case: 3–5 seconds, 265°C maximum.
    Vibration 10–500 Hz, 2 G; 10 minutes per cycle, for 60 minutes along each X, Y and Z axis.

    Mechanical layout and pin assignment

    Dimensions and case 31.8 × 20.3 × 12.2 mm (L × W × H); UL94V-0 plastic case.
    Mechanical tolerances General x.x / x.xx dimensions: ±0.5 mm. Pin size: 0.6 ±0.10 mm; lead extension: 3.81 mm.
    PCB footprint Top-view PCB layout: Ø0.8 mm holes (+0.2 / −0); 2.54 mm grid and 15.24 mm pin-row spacing. The body drawing gives a 2.06 mm end offset and a 5.08 mm span between pins 10 and 12 / pins 15 and 13. Verify orientation using the bottom-view module and top-view PCB drawings on PDF page 14.
    Pin assignment Pin 1: +Vin; pins 10, 11 and 15: no pin; pin 12: −Vout; pin 13: +Vout; pins 23 and 24: −Vin.

    Test conditions, packing and applications

    Specification test conditions Unless otherwise stated: 12 V DC normal input for the F model, rated load, 25°C and 70% RH ambient.
    MTBF Greater than 454 kh, MIL-HDBK-217F at 25°C.
    Unit weight 17 g catalog packing reference per unit; not a separately measured net weight.
    Bulk packing 15 units per tube, 750 units in 50 tubes maximum per carton. One tube gross weight: 310 g; carton gross weight: 16.1 kg. Carton: 620 × 230 × 230 mm. The packing illustration shows a 520 mm tube length and a 24 × 21.3 mm outer cross-section.
    Typical applications Medical devices, oxygen monitors, CT scanning, medical carts, oral-care equipment and industrial control systems.
    Manufacturer warranty The manufacturer datasheet states a 3-year warranty; confirm the applicable supply and service terms.

    Component and system EMC guidance

    Complete-system EMC verification Verify EMC with the converter installed in the final equipment and connected to a representative load. Wiring, assembly and the application affect the result. Follow the model's specified EMC conditions and any required external components; the linked EMI testing guidance does not certify the finished equipment.

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