Power Adapter MEAN WELL MPM-20-12 20W 12V 90-264V

The MEAN WELL MPM-20-12 is an AC-DC single-output medical encapsulated power supply that delivers 12 V DC at up to 1.8 A (20 W). With a universal input of 90–264 V AC and compact PCB through-hole format, this adapter is designed for reliable, space-saving integration in medical and industrial equipment. It meets RoHS requirements and features reinforced insulation (2 x MOPP) suitable for medical applications.

Advantages

The MPM-20-12 provides a stable 12 V output with short-circuit and overload protection in an encapsulated housing that simplifies PCB mounting. Its wide input range (90–264 V AC) allows use in different mains environments, while the small size (depth 52.4 mm, height 24 mm) and low weight (50 g) facilitate integration into compact designs. Reinforced isolation (2 x MOPP) supports safety compliance for medical devices.

Suitable for

• Powering medical devices with low power consumption
• Embedded systems and control boards on PCB
• Industrial equipment requiring a reliable 12 V rail
• Products needing reinforced isolation for patient-safe circuits

Key specifications

• Output voltage: 12 V DC
• Output current: 1.8 A (20 W)
• Input voltage: 90–264 V AC
• Mounting: PCB through-hole
• Safety isolation: 2 x MOPP (medical reinforced insulation)
• Dimensions: depth 52.4 mm, height 24 mm
• Weight: 50 g
• Compliance: RoHS

How to use

Install the adapter on the PCB using the designated through-hole pins and secure mechanical fastening points where applicable. Connect the AC mains input (90–264 V AC) according to the manufacturer’s wiring diagram and ensure correct polarity on the 12 V DC output. Verify proper ventilation and keep the surrounding area free of conductive debris. Test the output voltage under load before connecting sensitive equipment.

Recommendations

For medical applications, observe applicable standards and device-level safety requirements; maintain creepage and clearance distances on the PCB and follow MEAN WELL’s application notes for mounting, thermal management and protective circuitry to ensure long-term reliable operation.