# DC power adapter MEAN WELL DCWN03E-05 3W 5V 0.3A RoHS

**URL:** https://aio.lv/en/product--mean-well-dcwn03e-05--3879291
**Data updated:** 2026-01-05 20:32 (EET)
**Category:** Cable Adapters & Converters
**Manufacturer:** mean well
**Manufacturer code:** DCWN03E-05
**EAN:** 4021087046879
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-dcwn03e-05--3879291

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.99 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL DCWN03E-05 is a compact DC power adapter with an output of 3W, 5V voltage, and 0.3A current. It is RoHS compliant, ensuring environmental safety. Ideal for powering small electronic devices efficiently.

## Long description

The MEAN WELL DCWN03E-05 is a compact DC power adapter delivering 3W output power with a regulated 5V DC output at 0.3A. It features a DC-DC regulated dual-output converter topology with input range 4.5–9V DC and provides ±5V outputs at ±0.3A with 3000VDC input-to-output isolation in a DIP through-hole package. The unit is RoHS compliant and suitable for integration into small electronic devices and applications requiring isolated dual rails.
Advantages
This module offers regulated dual outputs with high input-to-output isolation (3000VDC), compact DIP through-hole packaging for straightforward PCB mounting, and a wide input voltage range (4.5–9V DC) that supports battery or regulated DC sources. The product meets RoHS environmental standards.
Suitable for
 Small embedded systems and microcontroller projects
 Signal conditioning and sensor interfaces requiring isolated rails
 Portable devices powered from 5–9V DC sources
 Applications needing low-power ±5V supplies
Key specifications
 Manufacturer: MEAN WELL
 Model / MPN: DCWN03E-05
 Output power: 3W
 Output voltage / current: ±5V at ±0.3A (single output 5V @ 0.3A per summary)
 Input voltage range: 4.5–9V DC
 Isolation: 3000VDC input-to-output
 Package: DIP through-hole
 Compliance: RoHS
How to use
Mount the DCWN03E-05 in a compatible DIP footprint on the PCB and solder the pins for mechanical and electrical connection. Apply a DC input voltage within the specified 4.5–9V range to the input pins. Observe correct polarity. Use the ±5V output rails to power target circuits, staying within the 0.3A per rail current limit. Provide adequate clearance and grounding on the PCB according to your system requirements.
Usage recommendations
Use proper decoupling capacitors on the input and output as recommended in your system design, avoid exceeding the rated current, and maintain creepage/clearance distances to preserve the 3000V isolation rating.

## Specifications

| Feature | Value |
|---|---|
| Output current | 0.3 A |
| Output power | 3 W |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 700 pc(s) |

### Performance

| Feature | Value |
|---|---|
| Output voltage | 5 |

### Certificates

| Feature | Value |
|---|---|
| Compliance certificates | RoHS |

## FAQ

### How much does the DC power adapter MEAN WELL DCWN03E-05 cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All mean well products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized mean well service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for DC power adapter MEAN WELL DCWN03E-05?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3879291/64231769_large.webp