Power adapter MEAN WELL MFM-20-12 20W 12V 90-264V

The MEAN WELL MFM-20-12 is an AC-DC single-output medical open-frame power supply providing 12 V DC at 1.8 A (20 W). Designed for PCB mounting, it supports a wide input range of 90–264 V AC, features 2×MOPP isolation for medical applications, and is RoHS compliant. Its compact dimensions (depth 49 mm, height 23 mm) and light weight (28 g) make it suitable for integration into space-constrained equipment.

Advantages

The MFM-20-12 delivers a regulated 12 V output with up to 1.8 A current while meeting medical isolation standards via 2×MOPP. Its wide input voltage range allows global use without additional converters. PCB-mount form factor and small size simplify installation in embedded or medical devices. RoHS compliance ensures reduced use of hazardous substances.

Suitable for

• Medical and healthcare equipment requiring 2×MOPP isolation
• Embedded systems and PCB-mounted devices
• Low-power instrumentation and control circuits

Key specifications

• Output voltage: 12 V DC
• Output current: 1.8 A (20 W)
• Input voltage: 90–264 V AC
• Isolation: 2×MOPP (medical)
• Mounting: PCB mount, open-frame
• Dimensions: depth 49 mm, height 23 mm
• Weight: 28 g
• Compliance: RoHS

How to use

Mount the MEAN WELL MFM-20-12 directly to the device PCB following the manufacturer’s recommended footprint and soldering guidelines. Connect the AC input according to the device wiring and ensure correct polarity on the 12 V DC output. Observe proper creepage and clearance distances in the system layout to maintain medical isolation performance. Verify output voltage under load before final assembly.

Recommendations

Install the module in an environment within its rated input voltage and temperature ranges, provide adequate airflow if enclosed, and follow medical device safety standards when integrating into patient-connected systems. Refer to the manufacturer datasheet for detailed electrical, thermal and mechanical requirements.