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Ten tiny cylindrical motors with silver bodies and rubber caps in a loose pile

Unique-Bargains

Unique-Bargains 10pcs DC 3V 3500RPM Micro Vibration Motor 4mm x 8mm

SKU CH-KGMS-QW5K7

Ten 3 V micro vibration motors for phone or pager alerts, 3500 RPM in a 4 mm × 8 mm body

  • Ready for projects with ten motors included
  • Runs on low power from 2.5 to 4.0 VDC
  • Spins at 3500 RPM for strong vibration
  • Compact 4 mm by 8 mm body fits tight spaces
  • Reversible rotation by swapping power polarity

What the product is and who it is for

This pack contains ten DC micro vibration motors rated at 3.0 V with a rotor speed of 3500 RPM. Each unit measures 4 mm by 8 mm and includes a removable rubber boot with two leads. They are intended for builders adding haptic feedback to phones, pagers or similar compact devices. Buyers who need higher voltage or larger actuators will not be served by this set.

Behaviour under sustained load

The motors draw a rated current of 70 mA and a starting current of 90 mA maximum, operating between 2.5 V and 4.0 VDC. Insulation resistance is at least 10 MΩ. Rotation direction is arbitrary and reverses when the supply polarity is swapped. These figures describe continuous electrical characteristics rather than a short burst.

Installation and common issues

The 4 mm diameter body fits tight spaces and the two leads allow direct soldering or connector attachment. The rubber boot can be removed if clearance demands it. A frequent mistake is applying voltage above 4.0 V, which can damage the windings. Wiring the leads backwards simply reverses rotation and does not harm the motor.

Highlights

  • Ready for projects with ten motors included
  • Runs on low power from 2.5 to 4.0 VDC
  • Spins at 3500 RPM for strong vibration
  • Compact 4 mm by 8 mm body fits tight spaces
  • Reversible rotation by swapping power polarity

Specifications

BrandUnique Bargains

Questions about this item

How much current does the 3.0 VDC motor draw after it has been running all day?

The motor is rated at 70 mA maximum continuous current at 3.0 VDC, so heat and power draw stay at that level once it reaches steady speed.

What power source must I already have to run these 4 mm x 8 mm vibration motors?

You need a DC supply between 2.5 V and 4.0 V capable of at least 90 mA per motor to handle the starting surge.

Will the 3500 RPM motor work with the 2.3 V logic levels on my older microcontroller board?

The motor starts at 2.3 V DC maximum, so a 2.3 V logic output can trigger it, but you still need the 2.5–4.0 V supply rail for reliable running.

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