The N20 Gear Motor is a miniature high-performance DC motor featuring an integrated precision metal gearbox. The 5V 200RPM variant is specifically designed for 5V systems, making it directly compatible with the power rails of most microcontrollers and USB power sources. It provides a smooth balance of speed and torque, ideal for small-scale robotics and precision mechanical assemblies.

Specifications

• Rated Voltage: 5V DC (Operating range: 3V – 6V).
• No-Load Speed: 200 RPM (at 5V).
• Shaft Type: D-shape (flat side for non-slip mounting).
• Shaft Diameter: 3mm.
• Shaft Length: 10mm.
• Gearbox Material: All-metal (Precision brass and steel gears).
• No-Load Current: ~35mA.
• Stall Current: ~450mA (at 5V).
• Stall Torque: ~0.5 kgcm to 0.7 kgcm.

Features

• 5V Logic Compatibility: Optimized to run at peak efficiency on a 5V supply, eliminating the need for complex voltage regulators in USB-powered or power-bank projects.
• Durable Metal Gear Train: The all-metal construction offers superior lifespan and impact resistance compared to plastic gearboxes, ensuring the teeth do not strip under sudden loads.
• Compact Integration: Its small rectangular profile is a global standard, fitting easily into tight spaces such as thin robotic chassis or handheld devices.
• Secure D-Shaft: The 10mm shaft length provides ample room for wheels, couplers, or pulleys, while the D-profile ensures a mechanical lock with set screws.

Pin and Connection Guide

• Terminals: Two small solder tabs at the rear.
• Polarity: The motor is bidirectional. Reversing the positive and negative leads will change the rotation direction.
• Control: Best used with a PWM (Pulse Width Modulation) motor driver (e.g., DRV8833 or TB6612FNG) to maintain torque at lower speeds.

Common Applications

• Micro-Robotics: Driving small-wheeled rovers, line followers, and "ant-weight" combat robots.
• USB Powered Gadgets: Motorizing small fans, rotating displays, or automated desktop accessories.
• Electronic Locks: Powering the latching mechanism in 5V smart locks or cabinet security systems.
• IoT Devices: Moving internal sensors or shutters in connected home hardware.

Usage Tips

• Mounting: Always use a dedicated N20 bracket. Avoid over-tightening the mounting screws into the gearbox, as it can deform the thin metal casing and cause the gears to bind.
• Power Supply: While it can run from a microcontroller's 5V pin for testing, it is recommended to use a separate 5V rail for the motor to prevent electrical noise from resetting the MCU.
• Soldering: Use flexible 26AWG–30AWG wire. The terminals are delicate; apply heat-shrink tubing over the soldered joints to provide strain relief and protect the tabs from snapping.
• Lubrication: The gearbox is pre-lubricated. If used in high-dust environments, consider shielding the motor to keep grit out of the precision gear teeth.