# Power adapter MEAN WELL MDS01L-03 1W 0.303A 4.5-5.5V

**URL:** https://aio.lv/en/product--mean-well-mds01l-03--3812929
**Data updated:** 2026-04-20 17:28 (EEST)
**Category:** Portable Device Chargers
**Manufacturer:** mean well
**Manufacturer code:** MDS01L-03
**EAN:** 4021087043120
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 18.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 15.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-mds01l-03--3812929

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.99 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL MDS01L-03 is a compact power adapter with an input voltage range of 4.5 to 5.5 V, providing a stable output power of 1 W and output current of 0.303 A. It is compliant with RoHS standards, ensuring environmental safety. This adapter is suitable for various low-power applications where reliable power supply is essential.

## Long description

The MEAN WELL MDS01L-03 is a compact DC‑DC medical converter designed for PCB mounting. It accepts a 4.5–5.5 V DC input and provides a single regulated 3.3 V DC output capable of supplying up to 0.303 A (1 W). The module is supplied in a SIP through‑hole package and offers reinforced isolation with two MOPP, making it suitable for low‑power medical and sensitive electronic applications requiring isolation and a small footprint.
Advantages
The converter delivers a stable 3.3 V output with up to 0.303 A current in a minimal 1 W power envelope, reducing board space compared with larger power supplies. Its SIP through‑hole format simplifies PCB assembly and mechanical retention. Reinforced isolation (2×MOPP) supports safety requirements in medical equipment. RoHS compliance ensures it meets environmental material restrictions.
Suitable for
Low‑power medical electronics and patient‑connected devices requiring 2×MOPP isolation
Embedded systems and microcontroller power rails at 3.3 V
PCB‑mounted designs where space is limited and through‑hole mounting is preferred
When it may not be suitable
This converter is rated for only 1 W and a maximum output current of 0.303 A; it is not appropriate for applications requiring higher power or greater load current. Systems that need multiple output voltages or higher isolation voltages may require a different power module.
Key specifications
Input voltage range: 4.5–5.5 V DC
Output voltage: 3.3 V DC (regulated)
Maximum output current: 0.303 A
Output power: 1 W
Package type: SIP through‑hole
Isolation: reinforced isolation, 2×MOPP
Compliance: RoHS
How to use
Mount the SIP through‑hole converter on the PCB following the manufacturer’s recommended footprint and soldering guidelines. Apply an input voltage within the 4.5–5.5 V DC range and verify output is 3.3 V under expected load conditions. Ensure isolation creepage and clearance distances on the board meet medical safety standards when integrating the module into patient‑connected equipment.
What to consider before purchase
Required output current does not exceed 0.303 A
System power budget limited to approximately 1 W
Need for reinforced isolation (2×MOPP) for medical compliance
Through‑hole SIP package fits your PCB layout and assembly process
Usage recommendations
Use this converter for single 3.3 V rails in compact medical or industrial boards where 2×MOPP isolation and through‑hole mounting are required; verify thermal conditions and maintain appropriate clearance for safety.

## Specifications

### Power

| Feature | Value |
|---|---|
| Output power | 1 W |
| Input voltage | 4.5 - 5.5 |
| Output current | 0.303 A |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 3000 pc(s) |

### Certificates

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

## FAQ

### How much does the Power adapter MEAN WELL MDS01L-03 cost, and is it available for purchase?

The price is 18.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 23.07.2026 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 MDS01L-03?

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/3812929/64229816_large.webp