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1. General scope
1-1 The specifications apply
to the coreless cylindrical permanent magnetic micro
vibration motor
DC model
Z4TH3B0020021.
2. Operating
conditions
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Items
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Specifications
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Condition &
Remarks
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2-1
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Rated voltage
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3.0V DC
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2-2
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Rated load
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Vibration weight
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As specified in
the outline drawing.
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2-3
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Rated speed
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12,000±2000rpm
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2-4
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Rotation
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C.W. (clockwise)
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2-5
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Motor position
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All positions
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2-6
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Operating voltage
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2.0~4.0V
DC
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2-7
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Operating
conditions
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-30 ~ 70°C,
ordinary humidity
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No condensation
of moisture.
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2-8
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Storage
conditions
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-40 ~ 80°C,
ordinary humidity
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No condensation of
moisture. |
3. Measuring
conditions
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Items
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Specifications
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Condition &
Remarks
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3-1
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Temperature
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20±2°C
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3-2
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Humidity
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(63 ~ 67%) RH
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3-3
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Motor position
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Motor shaft
horizontal
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Lock the motor in
a test fixture.
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3-4 All data are based on the measuring conditions:
Temperature, 20°C; Humidity, 65% RH. If any disagreement
occurs, such test conditions are available: Temperature,
5~35°C; Humidity, 45 ~ 85% RH.
4.
Mechanical
specifications
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Items
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Specifications
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Condition &
Remarks
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4-1
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Configuration
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As specified in
outline drawing
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Outline drawing No:
Z4TH3B0020021.
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4-2
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Appearance
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There shall be no
evidence of mechanical damage and shall not have
inadequate corrosion, etc.
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Visual
examination: Inspection carried out on samples.
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4-3
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Shaft end play
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0.05 ~
0.2mm
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4-4
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Weight of motor
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0.88g
approx.
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Body + Vibration weight: 0.47+0.41 |
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4-5
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Holding strength
of vibration weight
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49N (5kgf)
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5. Performance and
characteristics
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Items
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Specifications
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Condition &
Remarks
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5-1
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Rated speed
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12,000±2000rpm
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At rated voltage
and rated load (vibration weight).
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5-2
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Rated current
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130mA
max
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5-3
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Stall current
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145mA max
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At rated voltage.
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5-4
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Starting voltage
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2.0V DC
max
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At rated load
(vibration weight) any position of rotor.
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5-5
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Insulation
resistance
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1MΩ min
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At DC 100V
between the lead wires and motor body.
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5-6
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Terminal
resistance
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23Ω
approx.
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At 20°C.
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5-7
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Mechanical noise
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50db (A) max
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Measured at rated voltage and rated load (vibration
weight).
Background noise: 28db (A) max. @ 10cm.
Measuring instruments: B & K.
The weight of jig: 700g.
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6. Reliability Test
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Items
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Standard test conditions |
Condition & Remarks |
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6-1
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Life
test |
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After 2
hours exposure in ordinary Motors shall be approved as
specified in item 7-1. |
|
Position |
Horizontal |
Horizontal |
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Voltage |
Rated |
Rated |
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Load |
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Vibe weight
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Temperature |
20°C
|
40°C
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Humidity
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65% |
90% |
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Life (cycles) |
200,000 |
40,000
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6-2 |
Low
temperature exposure test |
Temperature: -40±2°C
Time: 24hrs |
After
the test motors shall be approved as specified in item
7-2. |
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6-3 |
High
temperature exposure test |
Temperature: 85±2°C
Time: 300hrs |
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6-4 |
High
humidity exposure test |
Temperature: 60±2°C
Humidity: 90 ~ 95% RH
Exposure time: 240hrs
Dry time: 4hrs
No condensation of moisture |
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6-5
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Vibration test |
Displacement: 1.5mm (p-p)
Frequency: 10 to 55Hz
Period: 20 Mins log sweep (10 ~ 55 ~
10Hz)
Direction: x, y, z
Time: Every 2 hours |
After
the test motors shall be approved as specified in item
7-2. |
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6-6
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Drop
test |
Set the
motor to the approximately 100g (include the motor)
weight of block drop the motor on the concrete floor.
Height: 1.5 meters
Direction: ±x, ±y, ±z
Times: Every 2 hours |
After
the test motors shall be approved as specified in item
7-2. |
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6-7
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Heat stock test
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Period: 32 cycles
Exposed at ordinary temperature and
ordinary humidity for 24 hours before measurement.
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After the test motors shall be approved
as specified in item 7-2.
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6-8
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Sulfur gas
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Temperature: 100°C
Time: 48hrs
Environment: Sulfur gas
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No corrosion on the brush and the
commutator.
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6-9
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Salt spray test
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Temperature: 35°C
Time: 48hrs
Environment: 5% salt spray
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No any sign of corrosion.
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6-10
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Las Vegas test
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Temperature: 60°C
Time: 48hrs
Humidity: <20% RH
Test mode: 8 secs on (C.W.)
52 secs off
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After the test motors shall be approved
as specified in item 7-2. |
7. Post environmental
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Items
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Requirements |
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7-1 |
Table A |
1) Rated speed: Initial data
-30% min./ +60% max.
2) Rated current: Initial data
±30% max
3) Insulation resistance: 1MΩ min
4) Starting voltage: 2.0V DC max
5) Wave of current: No blot wave.
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7-2 |
Table B |
1) Rated speed: Initial data
-30% min./ +60% max.
2) Rated current: Initial data
±30% max
3) Starting voltage: 2.0V DC max
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8. Caution and Matters
8-1 Warnings: In a
motor near the end its life, or under breakdown
conditions, short circuits can develop between
commutator segments. Uncontrolled voltage may then
leak into the power source circuit. Motors may
overheat or fail if run continuously with its rotor
locked condition or under excessive loads.
8-2
Destructive atmospheres: Do not use and store the
motor in the corrosive gas atmosphere (H²S, SO², NO²,
Cl², etc.), or substances that can emit toxic gases,
such as organic silicon, cyanide, formalin, or phenol
compounds. The motor may get serious damages.
8-3 Condensation: Condensation on the electrical
circuits can destroy the motor or control circuits.
Monitor the environment and undertake measures to
prevent condensation, such as installing condensation
sensors to cut power when necessary.
8-4 Be aware of the following factors and perform
necessary tests to check a motor’s ability to adopt
with your mechanism and applications: Motor life,
electric noise, mechanical noise, vibration,
static-electrical noise resistance, power-source noise
resistance, drift of rpm, electrical resonance between
control circuit and motor, mechanical resonance
between subassembly and motor malfunction due to motor
noise, electrical magnetic interference, malfunction
due to magnetic flux leakage, destruction due to
lightning-related power surge, grounding.
8-5 Some
particular plastic materials can crack and fail after
exposure to motor bearing oil. Perform test the motor
in/on the subassembly to check the influence of the
oiled plastic parts.
8-6 Avoid
connecting a serial resistor to the motor if at all
possible, as this can negatively affect reliability.
If this is unavoidable, keep resistance as low as
possible and test thoroughly for reliability before
using.
8-7 When testing for UL, CSA or other safely
standards, apply for approval for the entire
subassembly.
8-8 Do not store motors under conditions of extreme
temperatures or high humidity, or for longer than six
months even room conditions. When removing out of
packaging after storage, take precautions to prevent
condensation.
8-9 Connections: Complete
soldering operations within three seconds to prevent
damage to leads and terminals. Make sure that the
soldering tip does not exceed 350°C. Be gentle with
terminals; dents or pressure on them can lock up the
motor.
8-10 Please consults us in advance when design
considerations call for forcefully stalling the motor
using a short circuit at the terminal or reverse
voltage. Such operations can shorten product life.
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