DC-DC converter MEAN WELL SMU02N-05 2 W, input 21.6–26.4 V, output 400 mA, 7.5×11.6×10.1 mm

MEAN WELL SMU02N-05 is a compact 2 W DC-DC converter engineered for low-power electronic designs. It accepts a DC input voltage in the range of 21.6–26.4 V and provides a regulated output current of 400 mA. With a small package measuring 7.5×11.6×10.1 mm, this converter is intended for applications where board space is limited and reliable, low-power conversion is required.

Advantages

The converter delivers a fixed output current of 400 mA with a 2 W power rating, ensuring predictable performance in current-driven circuits. Its narrow input voltage range of 21.6–26.4 V makes it suitable for systems powered from nominal 24 V rails. The miniature dimensions reduce PCB footprint and simplify placement in dense assemblies. The device is designed to provide stable conversion with minimal external components, supporting straightforward integration into embedded systems and instrumentation.

Suitable for

• Embedded systems and single-board computers with 24 V supply
• Industrial automation modules and sensors requiring controlled current output
• Instrumentation and measurement equipment with limited PCB space
• Low-power communication devices and telemetry modules

Key specifications

• Output power: 2 W
• Input voltage range: 21.6–26.4 V DC
• Output current: 400 mA (regulated)
• Package dimensions: 7.5 mm × 11.6 mm × 10.1 mm (W × D × H)
• Mounting: PCB-mounted converter module

How to use

Install the DC-DC converter on the PCB following the manufacturer’s recommended footprint and soldering guidelines. Connect the input to a stable 21.6–26.4 V DC source, observing correct polarity. Route the regulated output current to the load, ensuring that the load current does not exceed the 400 mA rating. Allow adequate copper area or thermal path on the board for heat dissipation according to system-level thermal design. Verify output under expected operating conditions before final deployment.

Recommendations

Use within the specified input voltage range and below the rated output current to ensure reliable operation. Provide adequate decoupling and layout practices to minimize noise. For long-term reliability in industrial environments, comply with recommended soldering profiles and consider environmental protection if exposed to contaminants or moisture.