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48 To 5V 3A Double Line USB with Ear

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一、About product

The 48 to 5V 3A double line USB with ear DC Step down Converter is an electronic device that allows you to convert a higher voltage (in this case, 48V) to a lower voltage (5V) while also stepping down the current to a maximum of 3 amps. It includes two lines for USB connections and has an ear DC connector for input power. This converter is commonly used in applications where a high voltage power source needs to be converted for use with USB devices, such as smartphones, tablets, or other portable electronics. The step-down converter is designed to regulate the output voltage and maintain a stable power supply for your devices.

二、Product details

Input Voltage: DC 36V - 72V

Output Voltage: DC 5V (+/-0.1V)

Output Current: 3A max Efficiency: 96%

Operating Temperature: -20 to +80 degrees Celsius


Weight: 65G

Certification: CE, RoHS

The converter includes various safety features, including overvoltage protection, overcurrent protection, and short-circuit protection. It is designed with a compact size and lightweight construction, making it easy to install and use in a range of applications. The double line USB connections allow for multiple devices to be connected simultaneously, providing convenient charging or power supply options.

三、The competitive advantage of product line:

The company has passed CE/ROHS certification. OEM and ODM service is available.

One of the main competitive advantages of the 48 to 5V 3A double line USB with ear DC Step down Converter is its high efficiency rating of 96%. This means that it can effectively convert the input voltage to the desired output voltage with minimal energy loss, making it a more cost-effective and eco-friendly option compared to other converters with lower efficiency ratings.

Additionally, the converter includes multiple safety features such as overvoltage protection, overcurrent protection, and short-circuit protection, which help protect connected devices from potential damage due to power surges or faults.

The double line USB connections also provide added convenience, allowing for multiple USB devices to be charged or powered simultaneously. This can be particularly useful in settings where multiple devices need to be powered, such as in an office or household.

Finally, the compact size and lightweight construction make the converter easy to install and use in a range of applications, including automotive, industrial, and consumer electronics. Overall, the combination of high efficiency, safety features, and convenience make the 48 to 5V 3A double line USB with ear DC Step down Converter a competitive choice for those in need of a voltage converter.

四、Production capacity:

Product Line Name

Production Line Capacity

Actual Units Produced(Previous Year)

Power converter/Step-down converter/DC converter

Power converter: 40,000 Pcs / Month, Step-down converter: 10,000 Pcs / Month, DC converter: 40,000 Pcs / Month

Power converter: 400,000 Pcs, Step-down converter: 100,000 Pcs, DC converter: 400,000 Pcs


1. Are you a manufacturer?
Yes! We are a professional leading manufacturer engaged in the R & D, production, sale and service of DC-DC, AC-DC switching power, we have developing team with above 15 years experience can offer personalized power solutions.
2. What is your MOQ? Delivery time? Shipping Cost?
The MOQ is only 1pcs. The delivery time and shipping cost depends on the quantity of goods, shipping method and country.
3. Can I get samples?
Yes. We can send samples for checking. We usually choose Express delivery to send samples for quick testing.
4. Do you support OEM & ODM?

Yes, we can customize the product logo, packaging and specifications you need.
5. How to place an order?
Please send PO to Service and we will draft the Alibaba insurance order for you according to your needs. The payment methods we support include T/T, Western Union, paypal, etc
6. How can you make sure your quality? What's your products warranty?
We only use the best quality (original) parts to ensure that our product standards are the highest. All the products we sell are produced by experienced workers and 100% have been strictly inspected by QC department before shipping. The warranty is 1 year.


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Huizhou Calculus Technology Co., Ltd. is a leading manufacturer specializing in the R&D, production, sales and service of DC-DC and AC-DC converter.




 Tel: +86 18933510102  
 Add: 6th Floor, Building 8, Yinong Technology Rural Revitalization Technology Industry Demonstration Park, No. 3, Xinhua Avenue, Chenjiang Street, Zhongkai High-Tech Zone,Huizhou City,Guangdong Province,China
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