# Power adapter/inverter Mean Well RSDW20G-03 — 20 W, Input 18–75 V, Output 3 V, RoHS

**URL:** https://aio.lv/en/product--mean-well-rsdw20g-03--3812853
**Data updated:** 2026-01-06 11:11 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** mean well
**Manufacturer code:** RSDW20G-03
**EAN:** 4021087048279
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 61.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 50.82 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-rsdw20g-03--3812853

## 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

Mean Well RSDW20G-03 is a compact 20 W power adapter/inverter with an input voltage range of 18–75 V and a fixed 3 V output. Designed for embedded and industrial applications, it meets RoHS requirements, has a depth of 50.8 mm and weighs 35 g. Supplied in bulk packs of 300 pieces, it suits projects requiring small, lightweight DC power conversion.

## Long description

Mean Well RSDW20G-03 is a compact DC-DC railway single output converter designed for embedded and industrial applications. It accepts a wide input range of 18–75 VDC and provides a regulated 3.3 VDC output at up to 5.5 A. The module features 1.5 kVDC input-to-output isolation, a DIP through-hole package suitable for PCB mounting, and a Remote ON/OFF control. The unit is RoHS-compliant and intended for projects that require a small, lightweight 20 W DC power converter.
Advantages
The converter delivers a stable 3.3 V output with up to 5.5 A current in a compact 50.8 mm deep, 35 g package, enabling space- and weight-constrained designs. Wide 18–75 VDC input range allows compatibility with various DC power sources used in railway and industrial environments. 1.5 kVDC isolation improves safety between input and output circuits, and the DIP through-hole form factor simplifies PCB mounting and mechanical retention. Remote ON/OFF adds control flexibility for system integration.
Suitable for (tasks / use cases)
Embedded railway electronics and on-board power supplies
Industrial control systems and automation modules
Battery-powered systems and wide-voltage DC buses
PCB-mounted power rails in compact assemblies
Key specifications
Brand: Mean Well (RSDW20G-03)
Output: 3.3 VDC, up to 5.5 A (20 W)
Input voltage range: 18–75 VDC
Isolation: 1.5 kVDC input-to-output
Package: DIP through-hole
Depth: 50.8 mm; Weight: 35 g
Control: Remote ON/OFF
Compliance: RoHS
How to use
Mount the DIP through-hole module securely on the PCB following the manufacturer's pinout and recommended footprint. Apply a DC input voltage within 18–75 VDC to the input terminals, and connect the load to the 3.3 V output. Use the Remote ON/OFF pin to enable or disable the output according to the product's logic level specification. Ensure proper thermal management and clearance around the module to maintain reliable operation at rated load.
Usage recommendations
For reliable performance, operate the converter within the specified input range and avoid prolonged operation at maximum load without appropriate cooling. Verify isolation requirements in your system and follow PCB layout guidelines from Mean Well to minimize noise and ensure stable output under varying input conditions.

## Specifications

| Feature | Value |
|---|---|
| Input voltage | 18 - 75 |
| Output voltage | 3 |
| Output power | 20 W |

### Certificates

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

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.035 kg |
| Depth | 50.8 mm |

### Logistics data

| Feature | Value |
|---|---|
| Quantity per pack | 300 pc(s) |

## FAQ

### How much does the Mean Well RSDW20G-03 power adapter/inverter 20 W cost, and is it available for purchase?

The price is 61.49 € (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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Mean Well RSDW20G-03 power adapter/inverter 20 W?

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/3812853/64229761_large.webp