# Power Adapter MEAN WELL MDD01L-12 1W Input 4.5-5.5V Output 12V

**URL:** https://aio.lv/en/product--mean-well-mdd01l-12--3922617
**Data updated:** 2026-04-20 17:28 (EEST)
**Category:** Power Supplies (PSU)
**Manufacturer:** mean well
**Manufacturer code:** MDD01L-12
**EAN:** 4021087043342
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 13.21 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-mdd01l-12--3922617

## 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 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL MDD01L-12 is a compact power adapter with an input voltage range of 4.5 to 5.5V and a stable output of 12V at 1W. It is RoHS compliant, making it an eco-friendly choice for powering various devices. With a pack quantity of 3000 pieces, it is ideal for bulk purchasing for industrial applications.

## Long description

The MEAN WELL MDD01L-12 is a compact DC‑DC medical converter designed for PCB mounting. It accepts an input voltage between 4.5 and 5.5 V DC and provides a dual ±12 V output with a rated current of ±0.042 A per rail and total power of approximately 1 W. The module comes in a SIP through‑hole package and features 2xMOPP insulation suitable for medical equipment requiring reinforced isolation.
Advantages
The converter offers stable dual outputs from a low-voltage input in a small footprint suitable for PCB integration. Its SIP through‑hole form factor simplifies mechanical retention and soldering on standard boards. With 2xMOPP isolation, it meets higher safety isolation requirements common in medical applications. RoHS compliance ensures the product is free from restricted hazardous substances.
Suitable for
 Low‑power medical devices and patient‑connected instrumentation
 PCB designs requiring small SIP power modules with through‑hole mounting
 Applications needing reinforced isolation between input and outputs
When it may not be suitable
This converter is intended for low‑power use; its ±0.042 A output current and ~1 W power limit make it unsuitable for circuits requiring higher current or power. It is designed for PCB mounting and through‑hole installation, so it may not fit applications that require surface‑mount components or separate enclosure mounting without additional mechanical adaptation.
Key specifications
 Input voltage: 4.5–5.5 V DC
 Output: dual ±12 V DC
 Output current: ±0.042 A per rail (approx. 1 W total)
 Package: SIP through‑hole
 Safety isolation: 2xMOPP (reinforced isolation suitable for medical use)
 Compliance: RoHS
How to use
Mount the SIP through‑hole module on the PCB according to the manufacturer’s recommended footprint and soldering guidelines. Provide a stable 4.5–5.5 V DC input source and observe correct polarity. Route the ±12 V outputs to the required circuits keeping spacing and creepage distances consistent with medical isolation requirements. Verify output voltages under the intended load and include appropriate filtering or decoupling as needed for downstream electronics.
What to consider before purchase
 Confirm the ±0.042 A per rail output is sufficient for your load
 Ensure the SIP through‑hole package suits your PCB layout and mechanical constraints
 Verify that 2xMOPP insulation meets the safety requirements of your medical application
 Check that the input voltage range (4.5–5.5 V DC) matches your power source
Usage recommendations
Use the MDD01L-12 in low‑power medical or sensitive electronic circuits where reinforced isolation and a compact SIP through‑hole module are required; include appropriate input protection and output decoupling to maintain stable performance.

## Specifications

| Feature | Value |
|---|---|
| Input voltage | 4.5 - 5.5 |
| Output voltage | 12 |
| Output current | -0.042 A |
| Output power | 1 W |

### Certificates

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

### Logistics data

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

## FAQ

### How much does the Power Adapter MEAN WELL MDD01L-12 cost, and is it available for purchase?

The price is 15.99 € (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 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 MDD01L-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/3922617/64234810_large.webp