• Output Power: 3 W
• Output Voltage: 3.3 V DC
• Output Current: 900 mA
• Input Voltage Range: 85 – 305 V AC / 120 – 430 V DC, 47 – 63 Hz
• Efficiency: 68 %
• Ripple & Noise: max. 100 mVp-p
• Inrush Current: 10 A @115 VAC / 20 A @230 VAC
• No-load Power Consumption: < 0.075 W
• Operating Temperature: −30 °C to +85 °C
• Cooling: Free air convection
• Protection Functions: Short circuit, Overload, Over voltage
• Overvoltage Category: OVC II
• Isolation Voltage: 4200 V AC (Input to Output)
• Dimensions (L x W x H): 37 mm x 24 mm x 15 mm
• Weight: approx. 23 g
• Safety & EMC Certificates: UL, TUV, EN62368-1, EN60335-1, CB, EAC, CE
• Mounting Style: SMD (Surface Mount Device)
• Manufacturer Warranty: 3 years

Information about the MEAN WELL IRM-03-3.3S

The MEAN WELL IRM-03-3.3S is a 3W miniature AC-DC SMD-type power supply designed for efficient surface mount assembly on modern printed circuit boards. This high-reliability module is an excellent choice for compact industrial automation and handheld electronic devices where space and weight are critical factors. Its Class II isolation design, which operates without a functional ground pin, combined with built-in EMI filtering, allows it to comply with BS EN/EN55032 Class B standards. The module is protected by a flame-retardant phenolic case and fully encapsulated with silicone, providing superior thermal conductivity and vibration resistance up to 5G while shielding internal components from dust and moisture.

Performance-wise, the IRM-03-3.3S is an eco-friendly power solution, featuring an incredibly low no-load power consumption of less than 0.075W. This high efficiency ensures compliance with worldwide green energy regulations for low standby power. The unit handles a universal input range of 85 to 305Vac, making it adaptable for global power grids. With its integrated protection against short circuits, overloads, and overvoltages, and a wide operating temperature range from -30 to +85°C, this SMD module offers a durable and safe power source for IoT sensors and precision instruments in demanding environments.