MEANWELL PS-120-3.3 PS-120 Series 120W single-output switching power supplies

General Description

The PS-120-3.3 is a 120-watt open-frame AC-DC switching power supply. It is designed to convert AC input voltage into a stable 3.3V DC output, which is suitable for various electronic devices that require a 3.3V power supply, such as some low - voltage digital circuits and integrated circuits.

Features

Universal AC Input: It can work with an input voltage ranging from 90V to 264V AC, covering a wide range of voltage standards, making it adaptable to different power grids.

Low Leakage Current: The leakage current is less than 0.75mA, ensuring safety and reliability during operation.

Multiple Protections: It has short - circuit, overload, and over - voltage protection functions to protect the power supply and connected equipment from damage.

Free Air Convection Cooling: It adopts free air convection for cooling, which helps to dissipate heat effectively and maintain stable operation.

Full - load Burn - in Test: It undergoes a 100% full - load burn - in test to ensure high quality and reliability.

Specifications

Output Voltage: 3.3V DC, with an adjustable range (if applicable) usually around ±10% of the nominal value, so it could be approximately 3V - 3.6V.

Rated Current: 36.4A, and the maximum output current can reach 40A.

Rated Power: 120W.

Ripple and Noise: The maximum ripple and noise is 50mVp - p.

Voltage Tolerance: ±2%.

Line Regulation: 1%.

Load Regulation: 2%.

Efficiency Input (Typ.): 80% - 85%.

Over - voltage Protection: The over - voltage protection range is usually around 130% - 150% of the nominal output voltage, so it could be approximately 4.3V - 5V.

Dimensions: The size of the PS - 120 - 3.3 is 177.8mm×108mm×35.5mm, and its net weight is about 0.3kg.

Operating Temperature: The operating temperature range is from - 10°C to 60°C.

Warranty

It usually comes with a 2 - year warranty, providing users with reliable after - sales service.