4mm Tiny Coreless DC Motor – 12mm Model NFP-D0412-3978

4mm Coreless Motor, Coreless DC Motor


Moving Coil Motor Model NFP-D0412-3978 Data Sheet

Coreless DC motors are different in construction than the usual can motor. Moving Coil or Coreless Motors, instead of rotating iron armature, is made from lightweight material with the magnet wire wound around it. Usually have a less current loss. It doesn’t draw as much current as some other motors, so when powered by a battery the battery will last longer. They are designed for rapid acceleration.

Model NFP-D0412-3978-1-3.7 NFP-D0412-3978-2-3.0
Voltage 3.7V 3V
Terminal resistance 5.3Ω 2.8Ω
No-load-speed 78,000rpm 86,000rpm
No-load-current 53mA 25mA
Stall torque CW2.59g.cm CW2.88g.cm
Stall current 700mA 1,070mA
Max output power 0.519W 0.635W
Max efficiency 49% 49%
Torque constant 4g.cm/A 2.9g.cm/A
Rotor inertia <0.01g.cm² <0.01g.cm²
Weight 0.7g 0.7g


4mm Micro DC Motor NFP-D0412-3978 Outline Drawing



Brushed Coreless DC Motor Applications

Drone, Small Door Locks, Adult Products, Shared Power Bank, Label Printer, Barcode Printer, Security Monitoring Facilities, Card Readers, Office Equipment, Precise Automation Systems, CPAP Machines, Surgery Tools

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