0 ratings
Item #:
85551193
12V to 3.3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Item #:
85551193
GBP 13
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Monday, August 17
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Perfect for automotive, RV, marine, ATV, and other DIY and OEM applications requiring reliable low-voltage DC power conversion.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Compact Design
This miniature DC-DC converter module is designed for tight spaces, making it ideal for various applications while ensuring efficient power conversion without occupying much room.
Waterproof Rating
With its waterproof construction, this converter provides reliable power supply in harsh environments, protecting the circuitry from moisture and ensuring durability in outdoor applications.
High Efficiency
Operating at up to 96% efficiency, this converter minimizes energy loss during the power conversion process, delivering consistent performance while reducing heat generation and energy costs.
Product Details
| Brand Name | Envistia |
| Model | 3V 3A DC-DC Converter |
| UPC | 732387204855 |
| Manufacturer | Chuangruifa |
| Part Number | 3V 3A DC-DC Converter |
| Unit Count | 1.0 Count |
| Power Source | Corded Electric |
| Mounting Type | Surface Mount |
| Current Rating | 3 Amps |
| Item Dimensions D x W x H | 1.5"D x 1.06"W x 9.06"H (3.8 x 2.7 x 23 cm) |
| Item Weight | 30 Grams |
| Specification Met | FCC, UL |
| Brand | Envistia |
| Product Dimensions (L x W x H) | 1.5"D x 1.06"W x 9.06"H (3.8 x 2.7 x 23 cm) |
Who Should Buy?
-
DIY Electronics Enthusiasts
Perfect for hobbyists needing to power 3V devices from a 12V source in waterproof environments.
-
Outdoor Applications
Ideal for use in outdoor projects requiring durable, waterproof power solutions for low-voltage equipment.
-
LED Lighting Projects
Great for powering 3V LED lights on 12V systems, with an efficient and waterproof design.
-
High-Power Devices
Not suitable for devices requiring more than 3A, as it may cause overheating or failure.
Product Description
12V to 3.3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a 12V to 3V 3A Step-Down DC-DC Converter?
Answer: A 12V to 3V 3A Step-Down DC-DC Converter is an electronic power supply module that efficiently converts a 12V input voltage down to a stable 3V output voltage at a maximum current of 3A. This module is designed to provide a reliable power source for low-voltage devices from a higher voltage supply, ensuring they function correctly without damage. It’s commonly used in applications like LED lighting, microcontroller projects, and portable electronics. -
Question:
Is the 12V to 3V DC-DC Converter waterproof?
Answer: Yes, the 12V to 3V DC-DC Converter is waterproof, which makes it suitable for outdoor use or in environments where moisture is present. This feature helps protect the internal circuitry from degradation due to water exposure, ensuring long-lasting performance. Users can install it in settings like garden lights or automotive applications without worrying about short circuits caused by rain or splashing. -
Question:
What are the main applications for this power supply module?
Answer: This power supply module is primarily used in various projects such as powering LED strips, battery-operated devices, and microcontrollers like Arduino or Raspberry Pi. Its ability to deliver a steady 3A current at 3V makes it ideal for devices that require consistent power without voltage fluctuations, ensuring reliability in applications ranging from robotics to home automation systems. -
Question:
How does the step-down (buck) converter work?
Answer: The step-down (buck) converter works by utilizing an inductor, capacitor, and switch (transistor) to convert a higher input voltage to a lower output voltage efficiently. When the switch closes, energy is stored in the inductor; when it opens, the energy is released to the output capacitor, creating a lower voltage level. This process happens rapidly to achieve efficient power conversion, minimizing energy loss and heat generation, which is particularly useful in battery-powered devices. -
Question:
What are the specifications of this DC-DC converter?
Answer: The specifications of the 12V to 3V 3A Step-Down DC-DC Converter include an input voltage range of 12V, an output voltage of 3V, and a maximum current of 3A. The converter is designed with a compact size for easy integration into various projects while maintaining high efficiency and low heat generation. Additionally, it features a wide temperature operating range, making it suitable for various environmental conditions. -
Question:
Can I use this converter in a solar power system?
Answer: Absolutely! The 12V to 3V DC-DC Converter can be a great addition to a solar power system where you need to power low-voltage devices. By connecting this converter to a 12V battery (charged by solar panels), you can efficiently step down the voltage to power components such as sensors, controllers, and low-power appliances, extending the system’s utility and improving energy management. -
Question:
What safety features does this module have?
Answer: This DC-DC converter is equipped with several safety features, such as over-current protection, over-voltage protection, and thermal shutdown. These features protect the module and connected devices from damage due to electrical faults, ensuring reliability in various operating conditions. This makes it a safe choice for DIY electronics projects, enhancing user confidence in long-term usage. -
Question:
How do I install and connect this converter?
Answer: To install the 12V to 3V DC-DC Converter, first, ensure you have a suitable power source, such as a 12V battery. Connect the input terminals of the converter to the 12V supply, making sure of the correct polarity. Then, connect your 3V device to the output terminals. Ensure connections are secure and insulated to prevent short circuits. After installation, test with a multimeter to confirm the output voltage before connecting sensitive electronics. -
Question:
What is the efficiency of this converter?
Answer: The efficiency of the 12V to 3V 3A Step-Down DC-DC Converter typically ranges between 85% to 95%, depending on the load and operating conditions. High efficiency reduces energy loss as heat, prolonging the lifespan of the module and connected devices. It is particularly beneficial in battery-operated applications where maximizing energy use is crucial, ensuring longer run times. -
Question:
Where can I buy a 12V to 3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module?
Answer: You can purchase the 12V to 3V 3A Step-Down Waterproof Miniature DC-DC Converter Power Supply Module from Ubuy. They offer a variety of electronic components and modules, ensuring you can find the right product to meet your needs. Ubuy provides convenient shipping options and reliable customer service, making it easier for you to get the components required for your projects.
Envistia Power Converters Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
GBP 13
Order now and get it around Monday, August 17
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- Converts 12V DC input to 3V, 5V, 6V, or 9V outputs.
- Boasts a rugged, epoxy-sealed waterproof design.
- Delivers up to 3A current, suitable for various applications.
- Lightweight and compact for easy transport and use.
- Includes overload, over-current, and voltage protection for stable performance.
- Compatible with input voltages from 8V to 24V DC.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.