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AJMRTC DC-DC Buck Mini Step-Down Regulator Module, 5~36V Wide DC Input, Solder-Selectable 3.3V / 5V Output, Max 4A Current, Comes with Pin Header and Screw Terminal for Embedded IoT Projects
- - Wide 5~36V DC input range, factory preset to 5V, switch to 3.3V by soldering onboard resistor
- - Stable regulated output up to 4A, provides steady power for MCU, sensors and development boards
- - Dual connection options: pin header and screw terminal for flexible wiring and quick testing
- - High conversion efficiency, built-in over-current and over-temperature protection for safe operation
- - Tiny compact PCB size, immersion gold circuit design, easy to embed into DIY electronics and enclosures
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Overview
Specs
Reviews
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AJMRTC mini DC-DC buck converter is a high-performance step-down power regulator for embedded electronics. It accepts wide 536V DC input and outputs fixed 3.3V or 5V, selected by reworking the onboard 0 resistor. It delivers continuous current up to 4A with excellent efficiency. Equipped with both pin header and screw terminal blocks, it supports breadboard prototyping and fixed wiring. Integrated protection circuits prevent damage from overload and overheating. Perfect for powering Raspberry Pi, ESP32, Arduino, sensors, smart home modules and industrial low-voltage embedded systems.
Specifications
- Input Voltage: DC 5~36V (3.3V mode); DC 6~36V (5V default mode)
- Selectable Output: DC 3.3V / DC 5V (via soldering switching resistor)
- Max Output Current: 4A
- Switching Frequency: 500kHz
- Conversion Efficiency: Up to 90%
- Interface: Pin Header + Screw Terminal Block
- Protection: Over-current, Over-temperature
- PCB Process: Immersion Gold
- Application: IoT, MCU, Sensor, Embedded System, DIY Electronic Projects
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: non-replaceable
- This item is covered by ConnectFlow USA Return Policy
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