DC-DC Buck Converter, 12V/24V to 3.3V/5V

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SKU: PH-DCBC-1224

$44.29

● 12V/24V to 3.3V/5V DC-DC buck converter, 100% full power, high stability output. ● 1-60A current available, power from 15W-300W, conversion efficiency up to 95%. ● DC-DC step-down converter with aluminum housing, IP68 sealing, pure copper inductor, and quality SMT components. ● Suitable for a wide range of DC-DC buck converter applications including automotive, industrial, and LED power systems.

Output Current & Power & Voltage *

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Overview
Specs
Application
FAQ
Reviews

Overview

This 12V/24V to 3.3V/5V DC-DC buck converter delivers 100% full power with high stability and up to 95% efficiency. Available in 1–60A (15W–300W), dc dc step down converter has a compact aluminum alloy housing, IP68 waterproof silicone potting, and a pure copper inductor for reliable performance. Built with high-quality SMT components, it includes protection against over-current, low voltage, over-temperature, and short circuit. Designed for automotive, industrial, and LED applications, it supports wide voltage input, undergoes full-load aging tests, and offers a long lifespan of over 100,000 hours.

Feature

100% full power, high stability output.
100% full load aging test.
Buck converter adopt high quality thermally conductive silicone potting, waterproof, dustproof, shockproof.
Aluminum alloy shell, small size, easy to install.
Built-in over-current, low-voltage, over-temperature, short-circuit protection.
Wide voltage input, up to 93% conversion efficiency.
Long service life of more than 100000 hours.

Details

High-Quality Aluminum Enclosure: The enclosure of this DC-DC step-down converter is made of premium die-cast aluminum, offering excellent heat dissipation and ensuring safety and reliability.
Superior Waterproof Sealing: Sealed with high-quality organic silicone, the product is waterproof, dustproof, and shock-resistant, meeting the IP68 protection standard.
Pure Copper Inductor: The inductor features a pure copper magnetic core that effectively filters noise, vibration, and ripple, directly contributing to the stability of the power supply.
SMT Surface Mount Technology: Utilizes high-quality electronic components (such as TI, NCC, NICHICON, and NIPPON) to ensure high stability and reliability.

Dimension (unit: mm)

12V/24V to 5V Dimension

3A 15W

Buck converter 12v 24v to 5v 3a 15w

10A 50W

DC DC buck converter low current dimension

15A 75W, 20A 100W, 30A 150W

DC DC buck converter high current dimension

12V/24V to 3.3V Dimension

1A 3W, 2A 6W, 3A 9W, 5A 15W, 6A 18W, 10A 33W

Buck converter 12v 24v to 3.3v size

Wiring Diagram

DC DC buck converter wiring

Specs

Input
Rated voltage	12/24 V
Voltage range	8–36 V
Efficiency (type)	92% @ 12V input; 90% @ 24V input
Positive cable (red)	18 AWG @ 16.5 cm length
Negative cable (black) (input)	18 AWG @ 16.5 cm length
Output
Voltage	5 V
Max. rated current	10 A
Max. rated power	50 W
Voltage regulation	±1 %
Load regulation	2%
No load loss	0.15 W
Ripple & noise	100 mV
Positive cable (yellow)	16 AWG @ 16.5 cm length
Negative cable (black)	16 AWG @ 16.5 cm length
Environment
Working temperature	-35 ~ +80 °C
Working humidity	10% ~ 90% RH
Storage temperature	-40 ~ +85 °C
Function
Short circuit protection	YES
Over load protection	YES
Waterproof	IP68
Over temperature protection	YES
Over voltage protection	YES
Mechanical
Weight	110 g
Size	64 × 57 × 22 mm
Other
Cooling	Free air convection
Packaging	White box

Note: This table takes the specification of 12V/24V to 5V, 10A as an example, please see the selection table below for 3A/15A/20A/30A/40A/50A/60A specification files.

12V/24V to 3.3V DC-DC Buck Converter Model Selection

Output Current/Output Power	Efficiency
1A/3W	92%
2A/6W	92%
3A/9W	92%
5A/15W	92%
6A/18W	92%
10A/33W	92%

12/24V to 5V DC-DC Buck Converter Model Selection

Output Current/Power: 3A/15W, Efficiency: 89%, Size: 412714mm	12/24V to 5V 3A DC DC Buck Converter User Manual
Output Current/Power: 10A/50W, Efficiency: 92%, Size: 645722mm	12/24V to 5V 10A DC DC Buck Converter User Manual
Output Current/Power: 15A/75W, Efficiency: 93%, Size: 747432mm	12/24V to 5V 15A DC DC Buck Converter User Manual
Output Current/Power: 20A/100W, Efficiency: 92%, Size: 747432mm	12/24V to 5V 20A DC DC Buck Converter User Manual
Output Current/Power: 30A/150W, Efficiency: 93%, Size: 747432mm	12/24V to 5V 30A DC DC Buck Converter User Manual
Output Current/Power: 40A/200W, Efficiency: 95%, Size: 1008039mm	12/24V to 5V 40A DC DC Buck Converter User Manual
Output Current/Power: 50A/250W, Efficiency: 91%, Size: 15012763mm	12/24V to 5V 50A DC DC Buck Converter User Manual
Output Current/Power: 60A/300W, Efficiency: 90%, Size: 15012763mm	12/24V to 5V 60A DC DC Buck Converter User Manual

Note: The 3A/15W DC DC buck converter has an input voltage of only 12V.

Application

Car Charger

PLC Controller

Solar Panel Power System

LED Billboard

FAQ

Q1: Does the converter need additional cooling?

Usually no for loads under 1A–2A. For higher loads or in enclosed spaces, passive or active cooling may be needed to avoid thermal shutdown.

Q2: Can I connect multiple converters in parallel?

Not recommended unless specifically designed for parallel operation. Outputs may interfere or create current imbalance.

Q3: How should I fuse or protect the input?

Use an inline fuse or PTC resettable fuse close to the input side to prevent damage from short circuits or reverse polarity.

1 review(s)

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From: Matthew | Date: 5/8/2026 12:47 AM

Works for my 5V devices

Got this DC-DC step-down converter for a car project. Input is 12V from the vehicle and output is stable 5V. The IP68 waterproof housing is solid - even works in wet engine bay conditions. No heat issues so far. Handy little module for LED strips, USB ports, or any 5V gear that needs to run off a 12V or 24V battery system.