--- product_id: 119867598 title: "DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof" brand: "knacro" price: "$7.52" currency: USD in_stock: false url: https://www.desertcart.us/products/119867598-dc-dc-buck-converter-12v-24v-8-40v-to-5v store_origin: US region: United States of America --- # DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof **Brand:** knacro **Price:** $7.52 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof by knacro - **How much does it cost?** $7.52 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/119867598-dc-dc-buck-converter-12v-24v-8-40v-to-5v) ## Best For - knacro enthusiasts ## Why This Product - Trusted knacro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Adopts synchronous rectification technology; high transfer efficiency of 95 percent; small heating generation Full-potting, waterproof, anti-shock, waterproof, moisture-proof and dust-proof Small size of 74x74x32mm; Weight: 260g; tiny in size and light in weight With overcurrent and short-circuit protection, therefore safe to use Input voltage: 12V 24V (8V-40V, long-term operating voltage: 11v-30v) Output voltage: 5V Output Current: 25A Output Power: 125W Conversion efficiency: >93% Soft start time: about 500mS Output ripple: 30mV(Max) 20M Bandwidth Operate temperature(industrial): -40 to +85 Celsius(please enhance cooling or use lower power) Waterproof rating:IP68 Temperature rise in full load: 50 Celsius Adjust ratio in load: +/— 1% Volt adjust ratio: +/- 2% Dynamic response speed: 5% 200uS Module Properties: non-isolated buck module (BUCK) Rectification: synchronous rectification Input reverse connection protection: no(please connect diode in series to the input if you need input reverse-connection protection) Applications: Bus, CMB, large trucks, motor, solar generate electricity, display screen of bus and taxi, car audio device, LCD TV, LED, interphone, monitoring system, etc. Note: 1.Please add fuse in the input; and positive and negative pole of voltage should not be connected reversely, or power module would burn 2.To ensure the module outputs enough voltage and power, please make sure enough voltage and power of input power supply 3.We suggest you to leave current margin for longer usage life; and if your output current reaches the Max, you must enhance cooling Package Includes: 1x DC/DC Converter ## Features - Input range: DC 12V 24V (8V-40V,Please long-term input load at 11-30V within use. ),Output voltage:5V/25A/125W.High efficiency:>93%.Reliable, low heat dissipation ; - With overload / over-current / over / low voltage protection, stable performance. - Light compact, convenient to use and transport; Auto recovery - All epoxy sealed containers with Waterproof Housing; Used in vehicles, security systems, telecommunications, medical equipments, instruments etc - Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc, ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D271YG8 | | Brand | KNACRO | | Input Voltage | 12 Volts, 24 Volts, 40 Volts | | Manufacturer | KNACRO | | Mfr Part Number | 12V 24V ( 9- 36V) to 5V 25A 125W | | Output Voltage | 5 Volts | | UPC | 736364876899 | ## Product Details - **Brand:** KNACRO - **Input Voltage:** 12 Volts, 24 Volts, 40 Volts - **Output Voltage:** 5 Volts - **UPC:** 736364876899 ## Images ![DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof - Image 1](https://m.media-amazon.com/images/I/71ToQy-3kbL.jpg) ![DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof - Image 2](https://m.media-amazon.com/images/I/71WLbDHtbyL.jpg) ![DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof - Image 3](https://m.media-amazon.com/images/I/81DWJ1urYVL.jpg) ![DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof - Image 4](https://m.media-amazon.com/images/I/816gYCLIYML.jpg) ![DC-DC Buck Converter 12V 24V (8-40V) to 5V 25A 125W Step-Down Voltage Volt Regulator Power Supply Inverter Module Waterproof - Image 5](https://m.media-amazon.com/images/I/41lOPBYdSJL.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/119867598-dc-dc-buck-converter-12v-24v-8-40v-to-5v](https://www.desertcart.us/products/119867598-dc-dc-buck-converter-12v-24v-8-40v-to-5v) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*