RF-300EA-1D390 Mini DC Spindle Motor – Compact, Quiet & Versatile

Meet the RF-300EA-1D390 Mini DC Motor by JIA AI MOTOR — a compact, low-noise permanent magnet brush motor engineered for hobbyists, makers, and educators alike. Whether you're building a solar-powered toy, a DIY robotics project, or a small mechanical model, this 24mm round motor delivers reliable, smooth rotational power across a wide voltage range.

Made in Mainland China.

Key Features

Wide Voltage Range: Operates on DC 1.5V to 6.0V — compatible with solar panels, AA batteries, USB power banks, and more
High Speed: Reaches up to 7,250 RPM at 6V for strong rotational output in a tiny package
Ultra-Quiet Operation: Precious metal brush commutation minimizes noise for mute-friendly builds
Permanent Magnet Construction: Delivers consistent torque and efficient energy use (IE 1 efficiency class)
Compact & Lightweight: 24.3mm diameter, 12.4mm height, only 22g — fits virtually any tight-space application
CE Certified: Meets CE safety and compliance standards
Waterproof Protection: Built with waterproof features for added durability

Technical Specifications

Parameter	Value
Model	RF-300-1D390
Motor Diameter	24.3 mm
Motor Height	12.4 mm
Output Shaft Diameter	2.0 mm
Output Shaft Length	5 mm
Weight	22 g
Voltage Range	DC 1.5V – 6.0V
Commutation Type	Precious Metal Brush
Construction	Permanent Magnet
Certification	CE

Performance Data

Voltage	No-Load Speed (RPM)	Current
1.5V	1,800 RPM	8 mA
3.0V	3,600 RPM	12 mA
5.0V	6,050 RPM	17 mA
6.0V	7,250 RPM	20 mA

Perfect For

Solar-powered DIY toys and science fair projects
Robotics and automation prototypes
Educational STEM model kits
Small fans, pumps, and mechanical gadgets
RC models and miniature vehicles

What's in the Box?

1× RF-300EA-1D390 Mini DC Motor

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Learn More About DC Motor Technology

For more information on electrical motor efficiency standards and safety, visit the U.S. Department of Energy – Electric Motor Systems.

Note: Please allow minor measurement tolerances due to manual measurement. Monitor color calibration may cause slight color variations from the product image.

Frequently Asked Questions

Q: What voltage should I use with the RF-300EA-1D390 DC motor?

A: This mini DC motor supports a voltage range of 1.5V to 6.0V. You can power it with a single AA battery at 1.5V for slow-speed applications, or use up to 6V for maximum speed of 7,250 RPM. It is also compatible with small solar panels, making it ideal for solar-powered DIY toy models and STEM projects.

Q: Is this DC motor suitable for beginner DIY and robotics projects?

A: Absolutely! The RF-300EA-1D390 is compact, lightweight (just 22g), and very easy to integrate into beginner and intermediate DIY builds. Its low current draw (8–20 mA) makes it safe and energy-efficient for school science models, small robots, motorized toys, and hobby electronics projects.

Q: What does "precious metal brush" mean and why does it matter?

A: Precious metal brushes are used in the commutation system of this motor instead of standard carbon brushes. They produce significantly less electrical noise and friction, resulting in quieter, smoother motor operation — ideal for applications where low noise is important, such as indoor toy models or sensitive electronic projects.