---
product_id: 240815473
title: "6 Pieces LM2596s DC to DC Buck Converter Step Down Voltage Regulator Power Module 3.2-40V to 1.25-35V 3A High Efficiency DC Voltage Stabilizer Volt Transformer LM2596 DC-DC Buck Converter"
brand: "queta"
price: "฿1452"
currency: THB
in_stock: true
reviews_count: 8
category: "Queta"
url: https://www.desertcart.co.th/products/240815473-6-pieces-lm2596s-dc-to-dc-buck-converter-step-down
store_origin: TH
region: Thailand
---

# 3.2-40V input range 92% high efficiency 1.25-35V adjustable output 6 Pieces LM2596s DC to DC Buck Converter Step Down Voltage Regulator Power Module 3.2-40V to 1.25-35V 3A High Efficiency DC Voltage Stabilizer Volt Transformer LM2596 DC-DC Buck Converter

**Brand:** queta
**Price:** ฿1452
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your innovation with precision and efficiency!

## Quick Answers

- **What is this?** 6 Pieces LM2596s DC to DC Buck Converter Step Down Voltage Regulator Power Module 3.2-40V to 1.25-35V 3A High Efficiency DC Voltage Stabilizer Volt Transformer LM2596 DC-DC Buck Converter by queta
- **How much does it cost?** ฿1452 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/240815473-6-pieces-lm2596s-dc-to-dc-buck-converter-step-down)

## Best For

- queta enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Reliable:** Small 43x21x14mm footprint with rigorous 2-hour aging test ensures dependable performance in tight spaces.
- • **Robust Power Handling:** Supports up to 3A output current, ideal for powering demanding DIY projects or professional prototypes.
- • **Precision Voltage Control:** Continuously adjustable output from 1.25V to 35V lets you tailor power delivery with surgical accuracy.
- • **Ultra-Efficient Conversion:** Maximize energy savings with up to 92% efficiency, reducing heat and extending component lifespan.
- • **Versatile Application Ready:** Perfect for solar setups, battery charging, and embedded systems—engineered for millennial makers who demand flexibility.

## Overview

This 6-pack of LM2596 DC-DC buck converters offers a wide input voltage range (3.2-40V) and finely adjustable output (1.25-35V) with a max 3A current. Featuring up to 92% conversion efficiency and low ripple voltage (30mV max), these compact modules are built for reliable, heat-efficient voltage regulation in diverse applications—from solar-powered devices to embedded electronics. Each unit undergoes stringent quality testing, making them a trusted choice for professionals and hobbyists alike.

## Description

Description:Module nature: non-isolated buck (BUCK)Rectification method: non-synchronous rectificationInput voltage: 3.2V-40VOutput voltage: 1.25V-35VOutput current: 3A (maximum)Conversion efficiency: 92% (maximum)Switching frequency: 65KHzOutput ripple: 30mV (maximum)Load regulation: ±0.5%Voltage adjustment rate: ±2.5%Working temperature: -40 to +85Peripheral size: 43*21*14 (length * width * height) (mm)Features:1.The module uses high-quality LM2596 chip, high efficiency (maximum 92%), low heat generation, and can easily bring 3A (short-term) current. It is recommended to use current within 2A for long-term work, and add a heat sink (above 10W) Output).2.This module uses the original Sanyo filter capacitor with low ESR, which can make the ripple voltage as low as 30mV, which is completely comparable to the linear power supply!3.This module uses machine placement, reflow soldering, and each module undergoes a two-hour aging test before shipment to ensure high reliability.​ Wiring: 1. Soldering, directly solder the power cord to the input (output) port2. Welding pins can be used by inserting pins through lead wires or inserting into holes on the board; or soldering the PCB directly after adding pins.

Review: Great DC converter! ( Includes tips for new users ) - These Queta DC-DC Buck converters work great! All six of the DC converter modules I received today performed exactly as expected. When the output is set to 3 volts, their output voltage only sagged about 10 mV when drawing a half amp, so they are regulating the output voltage pretty well under load. A WORD OF CAUTION to people who are not used to working with these buck converters - it may seem at first like they are not working correctly. When you first take them out of the package, they are typically set for maximum output, so the DC input and output voltages will probably be the same. So this means that initially you should NOT hook up the device you intend to power with this buck converter. You MUST first set the output of the module to the desired output voltage level, before you connect your device to it, or you could potentially FRY the unit that you were intending to power this converter with! When you power the module up, set the DC input voltage to the buck converter to somewhere between 7 to 14 volts DC. Using a jeweler's screwdriver, turn the small brass screw on the blue trimpot about 10 turns counter-clockwise. Assuming you are monitoring the module's output with a DC multimeter, after you surpass 9 to 10 turns of the trimpot you should start to see the output voltage drop. Now adjust the trimpot until you reach the intended DC output level. For a 3W "star type" high power LED, this could be about 3 volts. For an Arduino Uno, it might be around 6V > 7V. One other thing you might want to check before permanently wiring the module to your intended load device. With the converter module powered up, monitor the DC output voltage to make sure that when you connect your device to the output, make sure that the output voltage does not "sag" too much. If the voltage drops by more than say ~ 30 to 100 mV when you connect your load device, there might be a problem .... otherwise it is probably working just fine.
Review: These have worked well for my solar panels - I have a farm and on that farm I have some cameras. Actually quite a few. Many are in remote corners where I have no power so I utilize solar panels and LiFePO4 batteries. To keep the batteries charged I made camera poles that have a solar panel on top and the camera below for shade during the hot day. I use these devices to limit the output to the current to the correct voltage to charge the batteries during the day. So far they have worked perfectly. One thing I do that might give me better results is that I use a Conformal Coating on them to protect the electronics from moisture. This is an electronics spray used to coat electronics with a protective barrier for moist environments. I apply this to all of them before putting them outdoors to use. I keep these on hand for many other uses as well. Great little devices as ling as you do not exceed their rated capacity.

## Features

- INPUT VOLTAGE RANGE: DC 3.2V to 40V (The input voltage must be 1.5V higher than the output voltage
- OUTPUT VOLTAGE RANGE: DC 1.25V to 35V continuously adjustable voltage, Maximum output current is 3A.
- HIGH EFFICIENCY: Output with high power conversion efficiency up to 92%. Measured 12V input, 5V output current, 1A load regulation rate is less than 1%.
- USE STEPS: Connect the power supply (3-40V), the power indicator light is on, and the module is working normally; adjust the blue potentiometer knob (usually turn clockwise to boost, counterclockwise to turn down) and use a multimeter to monitor the output voltage until it reaches the required voltage.This module can be used to debug a variety of system operating voltage ranges.
- REQUIRES ATTENTION:It is recommended to use the current within 2.5A for long-term work, and add the scattered Hot plate (output above 10W); because it is a step-down module, in order to ensure stable output, please keep a small 1.5V differential pressure

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08G4GYNL6 |
| Best Sellers Rank | #294,306 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,241 in Power Converters |
| Brand | Queta |
| Brand Name | Queta |
| Current Rating | 3 Amps |
| Customer Reviews | 4.6 out of 5 stars 165 Reviews |
| Item Dimensions D x W x H | 0.55"D x 0.83"W x 0.55"H |
| Manufacturer | Queta |
| Maximum Frequency | 65 KHz |
| Minimum Frequency | 50 Hz |
| Model | 6577943-4428-1059579511 |
| Mounting Type | PCB Mount |
| Power Source | Corded Electric, Battery Powered |
| Product Dimensions | 0.55"D x 0.83"W x 0.55"H |
| Specification Met | CE, ETL, FCC, RoHS, UL |
| UPC | 884139086452 |

## Product Details

- **Brand:** Queta
- **Power Source:** Corded Electric, Battery Powered
- **Product Dimensions:** 0.55"D x 0.83"W x 0.55"H
- **Mounting Type:** PCB Mount
- **Current Rating:** 3 Amps

## Images

![6 Pieces LM2596s DC to DC Buck Converter Step Down Voltage Regulator Power Module 3.2-40V to 1.25-35V 3A High Efficiency DC Voltage Stabilizer Volt Transformer LM2596 DC-DC Buck Converter - Image 1](https://m.media-amazon.com/images/I/61RkqDJFjCL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great DC converter! ( Includes tips for new users )
*by L***C on August 15, 2022*

These Queta DC-DC Buck converters work great! All six of the DC converter modules I received today performed exactly as expected. When the output is set to 3 volts, their output voltage only sagged about 10 mV when drawing a half amp, so they are regulating the output voltage pretty well under load. A WORD OF CAUTION to people who are not used to working with these buck converters - it may seem at first like they are not working correctly. When you first take them out of the package, they are typically set for maximum output, so the DC input and output voltages will probably be the same. So this means that initially you should NOT hook up the device you intend to power with this buck converter. You MUST first set the output of the module to the desired output voltage level, before you connect your device to it, or you could potentially FRY the unit that you were intending to power this converter with! When you power the module up, set the DC input voltage to the buck converter to somewhere between 7 to 14 volts DC. Using a jeweler's screwdriver, turn the small brass screw on the blue trimpot about 10 turns counter-clockwise. Assuming you are monitoring the module's output with a DC multimeter, after you surpass 9 to 10 turns of the trimpot you should start to see the output voltage drop. Now adjust the trimpot until you reach the intended DC output level. For a 3W "star type" high power LED, this could be about 3 volts. For an Arduino Uno, it might be around 6V > 7V. One other thing you might want to check before permanently wiring the module to your intended load device. With the converter module powered up, monitor the DC output voltage to make sure that when you connect your device to the output, make sure that the output voltage does not "sag" too much. If the voltage drops by more than say ~ 30 to 100 mV when you connect your load device, there might be a problem .... otherwise it is probably working just fine.

### ⭐⭐⭐⭐⭐ These have worked well for my solar panels
*by M***S on June 7, 2024*

I have a farm and on that farm I have some cameras. Actually quite a few. Many are in remote corners where I have no power so I utilize solar panels and LiFePO4 batteries. To keep the batteries charged I made camera poles that have a solar panel on top and the camera below for shade during the hot day. I use these devices to limit the output to the current to the correct voltage to charge the batteries during the day. So far they have worked perfectly. One thing I do that might give me better results is that I use a Conformal Coating on them to protect the electronics from moisture. This is an electronics spray used to coat electronics with a protective barrier for moist environments. I apply this to all of them before putting them outdoors to use. I keep these on hand for many other uses as well. Great little devices as ling as you do not exceed their rated capacity.

### ⭐⭐⭐⭐⭐ Handy gadgets for regulating voltage.
*by M***Y on August 12, 2025*

I've had one of these in my truck dashboard powering a 3V device from the 12V system for over a year. No issues.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-28*