Vybronics - one of largest suppliers of cylindrical & coin vibration motors
KOTL JInlong CDM0834B004L
Model Number: VCDM0834B004L
(old p/n: CDM0834B004L)

8 mm x 3.4 mm | 3 V | Double Magnet Vibration Motor

The VCDM0834B004L is the smallest double magnet motor we manufacture.
Unlike this motor, standard coin vibration motor (with brushes) are not noted for their fast rise and fall times and hence are not the best choice for haptic feedback applications. They incorporate a single magnet situated under the motors rotating voice coils / counter weight assembly, at the base of the coin motor. Our engineers recently discovered that by adding a second magnet above the voice coil / counter weight assembly, effectively sandwiching it between both magnets, many of the vibration motors performance characteristics dramatically improved.  Most notable is that this “Double Magnet”  design greatly improved the rise / fall times as well as the G force.  Power consumption is comparable to that of the single magnet design.

Model # Tech Type Rise Time Fall Time G force Current (mA) Vibration Frequency Driver IC Required
VCDM0834B004L Double Magnet 35 50 1.40 48 167 NO
VC0834B011F BRUSH 90 50 0.85 69 200 NO
VG0832012 LRA 50 80 1.40 58 235 YES
VW0825AB001G BRUSHLESS 70 90 1.00 54 250 NO

As can be seen from the table above, the rise / fall times are better than that of an LRA and there is no need for an external driver IC.  They can be driven with DC voltage and do not require an external driver IC.   Being a brush type motor, double magnet vibration motors have a lifetime of 100K cycles (min) which is not as good as that of a coin type LRA  (1000K cycles).    Pricing is slightly higher than that of a standard single magnet, brush type, coin vibration motor, but about 30% less than that of an LRA and even more so if you factor in the required driver IC for the LRA.   This motor is available with connector and custom lead lengths.

CLICK HERE to see photos of how coin motors have been mounted in products.

Summary Of Specifications
Technology Type: DOUBLE-MAGNET
Diameter (mm): 8.0
Thickness (mm): 3.4
Rated Voltage (Vdc): 3.0
Operating Voltage (Vdc): 2.5~3.5
Rated Current MAX (mA): 75
Typical Current (mA): 48
Rise Time (ms) MAX *: 35
Fall Time (ms) MAX *: 50
Rated Speed (rpm): 10000
Vibration Force (G): 1.40
* at 50% of Maximum G force
Packaging Spec
Part Packaging: Plastic Tray
Qty per reel / tray: 100
Quantity - Master box: 4000
Size - Master Box: 45*28*19CM
Weight - Master Box: 5.9KG
ECCN: EAR99
USA HTS Tarrif: 8501.10.4060
USA 25% Exemption: NONE
Samples
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VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor Drawing

This part is not authorized for Life Supporting Devices
None of the products offered for sale by us are authorized for use in any device that:

  1. is surgically implanted into the body
  2. supports or sustains life, and whose failure to perform as per our specification,
    may result in serious injury or death of the user.

VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor current, speedVCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 04VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 05VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 06VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 07VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 08VCDM0834B004L (old p/n CDM0834B004L) Double Magnet Coin Vibration Motor data 09

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