MEAN WELL IRM-05-12 5W AC/DC Encapsulated Power Supply Module, 12V 0.42A, PCB Mount, Black

Embedded systems developers and industrial electronics designers often need a compact, reliable power source that fits directly onto a PCB. The MEAN WELL IRM-05-12 delivers exactly that: a fully encapsulated 5-watt AC/DC module that converts universal mains input (85–264 V AC) into a stable 12 V DC output at up to 0.42 A. Its low-profile black housing and through-hole pins make it ideal for space-constrained applications such as IoT gateways, smart sensors, and automation controllers.

Key specifications

• Output power: 5 W continuous
• Output voltage: 12 V DC (fixed)
• Output current: 0.42 A maximum
• Input voltage range: 85–264 V AC (universal)
• Input frequency: 47–440 Hz
• Efficiency: up to 82%
• Isolation voltage: 3000 V AC (input to output)
• Operating temperature: -30 °C to +70 °C (free air convection)
• Safety standards: ITE EN/UL/IEC 60950-1
• Protection: short circuit, overload, over voltage
• Ripple & noise: 100 mVp-p max.
• No-load power consumption: <0.1 W
• EMC compliance: EN55032 Class B
• MTBF: >1,000,000 hours
• Mounting: PCB through-hole (encapsulated module)
• Dimensions: 45.7 mm (L) × 25.4 mm (W) × 21.4 mm (H)
• Weight: 32 g

Why choose it

This module eliminates the need for external components—just add input filtering and output capacitance, and you have a complete power solution. Its encapsulated design protects against dust, moisture, and vibration, ensuring long-term reliability in harsh environments. The universal input range means one part can be used in products destined for global markets, simplifying inventory and compliance.

Ideal use cases

• Industrial control boards and PLC auxiliary supplies
• IoT devices and smart home hubs
• Sensor networks and data loggers
• Telecom and networking equipment
• Test and measurement instruments

Good to know

The IRM-05-12 is a Class II device (no earth connection required) and meets EN55032 Class B radiated and conducted emissions without additional filtering in most layouts. It is supplied in a black, flame-retardant plastic case and is compatible with automated wave soldering processes. For higher power needs, consider the IRM-10 or IRM-15 series from MEAN WELL.