---
product_id: 473265025
title: "Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable"
brand: "youmile"
price: "€ 28.91"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/473265025-youmile-5-pcs-ac-dc-12v-450ma-buck-module-power
store_origin: NL
region: Netherlands
---

# 12V stable output Compact 3x2x1.8cm size Multi-layer protection Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable

**Brand:** youmile
**Price:** € 28.91
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your innovation with precision and protection!

## Quick Answers

- **What is this?** Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable by youmile
- **How much does it cost?** € 28.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/473265025-youmile-5-pcs-ac-dc-12v-450ma-buck-module-power)

## Best For

- youmile enthusiasts

## Why This Product

- Trusted youmile brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Space-Savvy Design:** Ultra-compact footprint fits seamlessly into tight enclosures and sleek home automation setups.
- • **Robust Safety Suite:** Built-in temperature, overcurrent, short-circuit, and overvoltage protections keep your devices safe and sound.
- • **Plug & Play Convenience:** Includes 5 modules plus red/black cables for immediate integration and rapid prototyping.
- • **Precision Power Delivery:** Consistent 12V ±0.2V output ensures your DIY and IoT projects run flawlessly.
- • **Wide Voltage Compatibility:** Supports AC 85-265V and DC 100-370V inputs, perfect for global and versatile applications.

## Overview

The Youmile 5 pcs AC-DC 12V 450mA Buck Converter modules deliver stable 12V power with ±0.2V accuracy, featuring comprehensive protections against temperature, overcurrent, short circuits, and overvoltage. Compact at just 3x2x1.8cm, these modules support wide input voltages (AC 85-265V, DC 100-370V) and offer 80% efficiency, making them ideal for Arduino, IoT, home automation, and small appliance projects. Each pack includes 5 modules and connecting cables for quick deployment.

## Description

Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable

## Features

- Stable performance: Very good stable 12V power supply module for DIY constructions.Fantastic with for Arduino, IOT and home-automation projects.
- Perfect fit: The step down module is small enough to be embedded into a product. Very good electrical filtering and almost perfect voltage conversion without noise
- Module protection: The power supply module board is temperature, over-current and short-circuit protection.It can isolate the high and low voltage
- Small size: This small buck converter is great to small devices where space is at a premium
- Application: Widely used for Motherboard power supply, instrument and meter, small home appliances, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item weight | 0.05 Kilograms |
| Manufacturer | Youmile |
| Part number | JK-YM-456D |
| Item Weight | 50 g |
| Package Dimensions | 10.8 x 5.8 x 2 cm; 50 g |
| Item model number | JK-YM-456D |
| Colour | 12V 450mA |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Brand:** Youmile
- **Power source:** AC/DC
- **Mounting type:** PCB Mount
- **Maximum frequency:** 60 Hz
- **Minimum frequency:** 50 Hz

## Images

![Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable - Image 1](https://m.media-amazon.com/images/I/71G5fUbRUSL.jpg)
![Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable - Image 2](https://m.media-amazon.com/images/I/61g2CTaBwVL.jpg)
![Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable - Image 3](https://m.media-amazon.com/images/I/61rTyy-0IHL.jpg)
![Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable - Image 4](https://m.media-amazon.com/images/I/61trkhAoEhL.jpg)
![Youmile 5 pcs AC-DC 12V 450mA Buck module Power Supply Buck Converter Step Down Module 5.4W Transformers with red and black cable - Image 5](https://m.media-amazon.com/images/I/71XjIBEgRfL.jpg)

## Available Options

This product comes in different **Colour Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works fine!
*by A***R on 16 November 2024*

Installed it. Tested it. Worked fine. There's a nice bright green Led to let you know it's working. Ive got one controlling a heating element.

### ⭐⭐⭐⭐ Excellent value - though use with care
*by A***B on 26 February 2025*

I've used similar switched mode power supplies and they tend to be of a similar design (the data sheet for the controller chip can be found on the internet). First off, it does not come with (or show) CE compliance so safety could be a concern. Missing is either a input fuse or more typically, a fusable resistor; power factor correction etc but then this is a minimal cost design. One concern is with the transformer construction - I did a windings isolation test to 600 volts with no insulation failure so a pass on the tested unit. Typical failings over time are the input and output electrolytic caps and the good news here is with the input cap indicating a higher than expected temperature max rating. Optical feedback is used for output regulation and the PCB has isolation slots where required. In use, the test unit has now run continuously for over 500 hours and operating temp has been fine (not in an enclosure) so looks good for DIY type use, with the standard precautions taken.

### ⭐⭐⭐⭐⭐ Perfect
*by M***S on 26 March 2025*

Perfect for low current audio projects

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-14*