# AC-DC power supply 220VAC to 5VDC, 3.5W

- Page: https://sigmanortec.ro/en/ac-dc-power-supply-220vac-to-5vdc-35w
- Price: 9.75 RON
- Availability: In stock; 1-2 zile
- Reference: 33327 · EAN: 5945335158529
- Category: Electronic components > Power Supply
- Specifications: Power: 0 - 20W; Source Type: descend; Adjustment Type: Fixed; Input Voltage: 220VAC; Output Voltage: 5VDC; Input Voltage Type: AC; Output Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.
- Package (shipping data): 0.01 kg
- Updated: 2026-06-16
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:03 (Europe/Bucharest)

## Description

Converts mains power into stable 5V DC, ideal for compact projects and DIY electronics. Accepts 85-220VAC at 50Hz, delivers up to 700mA at 3.5W power, with ± 0.2V. Dimensions of only 30 x 22 mm make it easy to integrate into small housings and custom modules.
The 5V Voltage Source module is a compact and efficient solution for powering electronic circuits directly from the 220VAC mains, without the need for a bulky transformer or an external power supply.
Thanks to its small dimensions of just 30 x 22mm, it is ideal for integration into small projects, including IoT applications, automation modules, or other low-power circuits.
The module accepts an input voltage between 85 and 220VAC at 50Hz, providing a stable 5VDC output with a tolerance of ±0.2V and a maximum current of 700mA, for a total power of 3.5W.
Specifications:
AC input voltage: 85 - 265V, 50/60Hz
DC input voltage: 100 - 370V
Output voltage: 3.3VDC (±0.2V)
Maximum output current: 700mA
Maximum power: 3.5W
Isolation: galvanic, high voltage
Protections: overcurrent, short circuit, thermal
Output regulation technology: 431 reference
MTBF: over 16,000 hours (25°C, 80% load)
Dimensions: 30 x 20 x 18mm
Usage:
Make sure the mains power is disconnected before any mounting or wiring operation.
Connect the module's input terminals to the 220VAC mains, observing polarity and electrical safety standards.
Connect the output terminals (5VDC and GND) to the circuit to be powered.
Check that the connected load does not exceed the maximum current of 700mA.
Reconnect the mains power and verify the output voltage before connecting sensitive components.
When using together with an Arduino, ESP32, or other microcontroller, connect the 5V output to the board's VIN or 5V pin, and GND to the common GND.
Connection:
⚠️ WARNING - DANGEROUS VOLTAGE
This module operates at 220VAC mains voltage, which can cause severe electric shock or death if handled incorrectly or installed by unqualified personnel. Do not touch live components. Work on this module must be performed only with the power disconnected and only by qualified persons.