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Mean Well MDD03G-05 Medical Grade DC/DC Converter 3W - 18-75V input, 5 and -5V output

15V, 3W, DC/DC, Medical Grade
SKU:
MDD03G-05

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Description

Features

DIP 24 package with international standard pinout
4:1 wide input range
Low patient leakage current <5µA
Wide operating temperature range -40~+90℃
Medical safety approved(2xMOPP) according to IEC60601-1
Protections: Short circuit(Continuous)/Overload
6KVDC or 4.2KVAC high I/O isolation(Reinforced isolation)
3 years warranty

General Specification 

Voltage accuracy ±2%
Efficiency 81%
Short circuit protection Continuous, automatic recovery
Working temperature -40°C to +90°C
EMC Compliance to EN55011 class A, EN61000-4-2,3,4,5,6,8
Temp. Coefficient 0.05% / ℃ (0 ~ 71℃)
Dimension (LxWxH) (mm) 31.8*20.3*12.2mm

Specifications

  • Brand
    Mean Well
  • Series
    MDD Series
  • Power Rating
    3 Watt
  • Output Voltage
    5 Volt
  • Rated Current
    0.3 Ampere
  • Input Voltage
    18V~75V
  • Standards Met
    CB,CCC,CE,EAC,ENEC,UL
  • Operation Mode
    Constant Voltage
  • Operating Temperature
    -40°C~90°C
  • Warranty
    3 Year
  • Length
    3.18 cm
  • Width
    2.03 cm
  • Height
    1.22 cm
  • Weight
    0.02 kg

File Downloads

::specification::

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Frequently Asked Questions

Can I use the MDD03G-05 in a medical monitor or patient-adjacent embedded system that needs 5V rails?

This model is a 3W constant-voltage DC/DC converter with 5V output at 0.3A, so it fits low-power 5V medical or embedded subcircuits that stay within that output limit. Its medical-grade positioning and CB, CCC, CE, EAC, ENEC, and UL certifications make it appropriate for regulated equipment designs where those approvals matter.

Is the MDD03G-05 suitable for industrial control electronics that need isolated low-power 5V conversion?

It can fit compact industrial control or automation electronics that need a 5V rail and draw no more than 0.3A from a 3W converter. The 18-75V input range also suits systems built around a wide nominal DC bus within that stated range.

Can this converter power 5V logic in embedded automation or data acquisition boards?

Yes, it is aligned with low-power 5V logic sections in embedded or data acquisition designs, provided the load stays within 5V and 0.3A. The small 31.8 × 20.3 × 12.2 mm package also helps where board or enclosure space is limited.

Which MDD03G model should I choose: 5V, 12V, or 15V?

Within this 3W series, the MDD03G-05 provides 5V at 0.3A, the MDD03G-12 provides 12V at 0.12A, and the MDD03G-15 provides 15V at 0.1A. All three share the same 18-75V input range, 31.8 × 20.3 × 12.2 mm dimensions, 0.017 kg weight, and -40°C to +90°C operating temperature range.

Is the MDD03G-05 suitable for outdoor or harsh-temperature installations?

The operating temperature range is -40°C to +90°C, so the temperature spec supports use across a wide range of enclosed equipment environments. No IP rating is listed in the provided specs, so outdoor exposure or washdown suitability cannot be confirmed from this data alone.

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Mean Well MDD03G-05 Medical Grade DC/DC Converter 3W - 18-75V input, 5 and -5V output
Mean Well

Mean Well MDD03G-05 Medical Grade DC/DC Converter 3W - 18-75V input, 5 and -5V output

Features

DIP 24 package with international standard pinout
4:1 wide input range
Low patient leakage current <5µA
Wide operating temperature range -40~+90℃
Medical safety approved(2xMOPP) according to IEC60601-1
Protections: Short circuit(Continuous)/Overload
6KVDC or 4.2KVAC high I/O isolation(Reinforced isolation)
3 years warranty

General Specification 

Voltage accuracy ±2%
Efficiency 81%
Short circuit protection Continuous, automatic recovery
Working temperature -40°C to +90°C
EMC Compliance to EN55011 class A, EN61000-4-2,3,4,5,6,8
Temp. Coefficient 0.05% / ℃ (0 ~ 71℃)
Dimension (LxWxH) (mm) 31.8*20.3*12.2mm
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