# Power supply module, 220VAC to 12VDC, 50W

> Switching power supply module (SMPS) AC-DC, reference 9939, converts 90-265VAC (50/60Hz) to 12VDC. Output current 4A (maximum 6A), power 50W (maximum 72W). Connection via screw terminals, no additional connectors required. Includes overtemperature, overcurrent and short-circuit protection. Dimensions 90x49x26mm. Supplied without enclosure, suitable for LED strips and 12V devices.

- Page: https://sigmanortec.ro/en/power-supply-module-220vac-to-12vdc-50w
- Price: 42.83 RON
- Availability: In stock; 1-2 zile
- Reference: 9939 · EAN: 5943148434441
- Category: Electronic components > Power Supply
- Specifications: Power: Over 20W; Source Type: descend; Adjustment Type: Fixed; Maximum Controlled Power: 50; Input Voltage: 220VAC; Output Voltage: 12VDC; Input Voltage Type: AC; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.098 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 03:39 (Europe/Bucharest)

## Description

AC-DC switching power supply for converting 90-265V AC to 12V DC, ideal for LED strips and 12V equipment. Offers up to 50W with high efficiency, quick connection via screw terminals without additional connectors, overtemperature, overcurrent and short circuit protections. Delivered without housing, easy to integrate into technical applications.
AC-DC switching power supply module for converting mains voltage (90-265V AC) to a stable 12V DC voltage, with a maximum power of 50W. Designed to power LED strips, electronic devices and other 12V equipment, this module offers high conversion efficiency.
The module does NOT include the housing.
It is equipped with multiple protection functions, including over-temperature protection, over-current protection and short-circuit protection, ensuring safe and durable operation. It does not require additional connectors (connect the wires directly to the screw connectors) and is compatible with a wide range of electrical systems.
This power supply module is a switch mode power supply (SMPS). This type of power supply uses a switching circuit to efficiently convert alternating current (AC) voltage into a stabilized direct current (DC 12V), offering several advantages over linear power supplies.
Specifications:
Input voltage: AC 90~265V, 50/60Hz
Output voltage: DC 12V
Output current: 4A (maximum 6A)
Output power: 50W (maximum 72W)
Protections: Overtemperature, overcurrent, short circuit
Dimensions: 90 x 49 x 26mm
Use:
Make sure that the power source is compatible with the 90-265V AC range. Be very careful because you are working with AC mains voltage!
After connecting the power, test the output to ensure that the voltage and current are within optimal parameters.
Connect the input wires to the electrical network according to the pins marked AC Input . Polarity is not relevant.
Attach the 12V DC consumers to the output terminals, which are marked DC + and - .
Avoid overheating by mounting the module in a well-ventilated space.
Package Included:
1 x AC-DC 12V Power Supply Module