DC Converter MEAN WELL DCWN03E-15 3W 4.5-9V 100mA

The MEAN WELL DCWN03E-15 is a compact DC converter delivering up to 3W of regulated power. Designed for low-voltage DC systems, it accepts an input range of 4.5–9V and provides a constant output current of 100mA. Its small footprint—20.3mm wide, 31.8mm deep and 10.2mm high—makes it suitable for installations where space is limited and reliable DC-to-DC conversion is required.

Advantages

This DC converter offers stable output current and compact mechanical dimensions that simplify integration into small enclosures and PCB-mounted solutions. The device is engineered for efficient power conversion within its rated input range, with construction that supports reliable operation in compact electronic assemblies. Low-profile packaging and straightforward electrical characteristics reduce design complexity when adding regulated DC output to existing systems.

Suitable for

• Low-power embedded electronics and sensor modules
• Battery-powered devices operating within 4.5–9V input range
• Small instrumentation and control circuitry requiring 100mA output
• Space-constrained applications and compact enclosures

Key specifications

• Output power: 3 W
• Input voltage range: 4.5–9 V DC
• Output current: 100 mA
• Package dimensions: 20.3 mm (W) × 31.8 mm (D) × 10.2 mm (H)
• Form factor: compact low-profile DC-to-DC converter

How to use

Connect the converter to a stable DC source within the specified input range (4.5–9V). Observe correct polarity when wiring input and output terminals. Mount the unit in a location that allows some air circulation; although designed for compact spaces, avoid covering the device with insulating materials that could impede heat dissipation. Verify the output current requirement of the connected load does not exceed 100mA and test under expected operating conditions before final installation.

Recommendations

For reliable operation, install the converter on a mechanically secure surface and keep ambient temperature within the device's operational limits. Use proper decoupling and short wiring on input and output lines to minimize voltage drops and interference. If the application approaches the converter’s power limits, confirm thermal behavior under load and consider additional cooling or a higher-power converter when necessary.