# Power adapter MEAN WELL SCWN03A-12 3W 12V 0.25A RoHS

**URL:** https://aio.lv/en/product--mean-well-scwn03a-12--4182793
**Data updated:** 2026-01-05 20:33 (EET)
**Category:** I/O Adapters & Controllers
**Manufacturer:** mean well
**Manufacturer code:** SCWN03A-12
**EAN:** 4021087041881
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 19.83 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-scwn03a-12--4182793

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL SCWN03A-12 is a compact power adapter with an output of 3W, 12V, and 0.25A. It is RoHS compliant, ensuring it meets environmental standards. Ideal for powering low-power devices, it offers reliability and efficiency in a small form factor.

## Long description

The MEAN WELL SCWN03A-12 is a compact DC-DC regulated single output converter delivering 12V at 0.25A (3W) from a 9–18V DC input. It features 3000VDC input-to-output isolation and comes in a DIP through-hole package suitable for PCB mounting. The unit is RoHS compliant.
Advantages
This module provides a regulated 12V output with low power consumption in a small DIP package, allowing straightforward integration into existing PCBs. High input-to-output isolation (3000VDC) improves safety in applications requiring galvanic separation. The wide input range (9–18V) offers flexibility for various DC supplies.
Suitable for
Powering low-power embedded systems and microcontroller boards
Industrial control circuits requiring isolation
Sensor modules and instrumentation with 12V requirements
Prototyping and through-hole PCB designs
Key specifications
Model: MEAN WELL SCWN03A-12 (MPN: SCWN03A-12)
Input voltage: 9–18 V DC
Output voltage/current: 12 V DC, 0.25 A (3 W)
Isolation: 3000 V DC input-to-output
Package: DIP through-hole
Compliance: RoHS
How to use
Mount the SCWN03A-12 on the target PCB using standard DIP through-hole soldering methods. Connect a 9–18V DC supply to the input pins, observing polarity. Take the regulated 12V output from the output pins, ensuring the load does not exceed 0.25A. Follow normal PCB layout practices for power modules, keeping input and output traces adequately sized.
Usage recommendations
Use the converter within the specified input range and do not exceed the 0.25A output current. Provide appropriate decoupling and, if needed, input fusing. Maintain clearance and creepage distances on the PCB consistent with the 3000V isolation rating and follow manufacturer guidelines for reliable long-term operation.

## Specifications

| Feature | Value |
|---|---|
| Output power | 3 W |

### Technical details

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

### Power

| Feature | Value |
|---|---|
| Output voltage | 12 |
| Output current | 0.25 A |

### Logistics data

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

## FAQ

### How much does the Power adapter MEAN WELL SCWN03A-12 cost, and is it available for purchase?

The price is 23.99 € (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 24.07.2026 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 Power adapter MEAN WELL SCWN03A-12?

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/4182793/64257742_large.webp