Item Vibration Motor
Model DEV-3408E03 (REV 1.00)
Date JUNE 21, 2008
DOOCO Electronics Co., Ltd.
REVISION PAGE

REV. ORIGINATOR APPRPVAL MODIFICATION DETAIL DATE
1.00
H Y HUANG
K.R CHOI
INITIAL RELEASE
Application
This specification is applied for vibration motors to be used for potable telephones or pagers, manufactured in DOOCO.
 Contents

Items page

1. Construction and method  4
2. Ratings  4
3. Electrical characteristics  4
4. Mechanical characteristics  5
5. Quality testing provisions  6
6. Post environmental  7
7. Marking  7
8. Factory Automation and Identification  8
9. Cautions  9
10. Out drawing 1. Construction and method
1. 1. Motor construction: 4 DC coreless motor
1. 2. Number of magnet poles: 2 – poles
1. 3. Number of phases: 3 – phases ( Connection)
1. 4. Coil construction: Cylindrical moving coil
1. 5. Rectifying method: Precious brush and commutator

2. Ratings
2. 1. Operating Voltage: 3.6Volts Nominal
2. 2. Motor posture: Any posture is available
2. 3. Voltage range for use Starting Voltage: 2.8V max
2. 4. Environmental
2-4-1. Operating temperature range: -10C ~ +60C
2-4-2. Storage temperature range: -40C ~ +80C
2. 5. Measuring condition
Measure at normal temperature and humidity
2. 6. Appearances
No rust, flaw, stains, or transformation appearance on motor
which affect the motor performance.

3. Electrical characteristics

3. 1. Running Current
– Measure at rated voltage : 120mA max
3. 2. Load Speed
– Measure at rated voltage : 9,000 ± 2,000rpm
3. 3. Starting Voltage
– Minimum voltage for starting
(Voltage should be applied instantaneously) : 2.8V max.
3. 4. Starting Current
– Measure current at locked weight in rated voltage : 150mA max



4. Mechanical characteristics

4. 1. Material

4. 1. 1. Counterweight : Tungsten alloy of Specific gravity 17.0 g/cc minimum
4. 1. 2. Brush : Copper Alloy
4. 1. 3. Commutator : Copper Alloy
4. 1. 4. Motor housing : Carbon steel (SPCE)
4. 1. 5. Shaft : SUS (Steel Bar HV 650 or more)
4. 1. 6. Terminal : Nickel silver Alloy
4. 1. 7. Bearing : Fe Cu Oil-impregnated Synthetic alloy
4. 1. 8. Brush base : Polyamide (PA).
4. 1. 9. washer : PEEK
4. 1. 10. Magnet : permanent magnet (Nd Alloy)
4. 1. 11. Coil : Polyurethane coated copper wire
4. 1. 12. Bracket : Carbon Steel (SPCE)

4. 2. Plating / Finish / Coatings

4. 2. 1. Counterweight : Nickel Plate.
4. 2. 4. Motor Housing : Nickel Plate.
4. 2. 5. Terminal : Tin alloy plating.
4. 2. 6. Bracket : Tin alloy Plating.


4. 3. Mechanical Noise

4. 3. 1. 50dBA maximum from 10Cm distance with 3.6 volts applied.
4. 3. 2. Background noise 28dB maximum.
4. 3. 3. Set – up (located within an anechoic enclosure):
SPL meter and microphone must be mechanically decoupled from test block.

5. Quality testing provisions
Motor conform to the following environmental test program shown in section 8 which is detailed in section 6. part marking remain legible after testing.
5. 1. Temperature shock
Each temperature cycle shall consist of 30 minutes at -40C followed by 30minutes at +80C with a 20 second maximum transition time between temperatures. The test duration is 32 cycles. Finally allow test samples to dry at room ambient temperature for 24 hour before taking final measurements.
5. 2. Low Temp Storage
Expose test samples to -40C for 24 ± 1 hour. Finally allow test samples to dry at room ambient temperature for 24 hour before taking final measurements.
5. 3. High Temp / Humidity Storage
Expose test samples to +70C with 85% relative humidity for 24 ± 1 hour. Finally allow test samples to dry at room ambient temperature for 24 hour before taking final measurements.
5. 4. Operating life
Subject samples to -10C for 2 hours followed by +60C, 85% relative humidity for 2 hours cycling for a total test time of 140 hours. Maximum transition time between temperatures is 30 minutes. Motor to be operational during this exposure using an 8 seconds ON followed by 52 seconds OFF duty cycle.
5. 5. Random vibration
Vibrate randomly from 20 to 2000Hz using the following Power Spectral Density Profile. It is a +3dB /octave from 20Hz to 80Hz, at 8g’s RMS level from 80Hz to 350Hz, and finally at –3dB /octave from 350Hz to 2000Hz. The PSD tolerance is ±3dB from 20 to 1000Hz and ±6dB above 1000Hz. The test time is 15minutes per plane.
5. 6. Mechanical Shock Test
Secure component to a fixture appropriate for this test. Fixture shall be capable of controlling drop orientation. Drop samples to three one-half sine shock pulses (4000g’s for 0.3 milliseconds) in each direction (six sides total), along each of the three mutually perpendicular axes for a total of 18 shocks.
5. 7. Shaft Pull Test
Slowly apply an increasing pull force on the counter weight in the axis of the motor shaft until destruction. Record the point of destruction. The counter weight must withstand a minimum axial pull force of 3000 grams.



6. Post Environmental

6. 1. Electrical requirements
6. 1. 1. Starting voltage is 2.8V max
6. 1. 2. No Dead point is 2.8V max
6. 1. 3. Current drain : 25% from initial
6. 1. 4. RPM : 30% from initial
6. 1. 5. Contact resistance : Within 25% from initial

6. 2. Integrity must not be compromised by qualification testing.
Complete visual inspection will be performed before and after environmental testing.

7. Marking
Individual Part Marking: No part markings would be acceptable if agreed by Development Engineering. Otherwise, when physically possible, parts shall be permanently, legibly and visible marked on the topside of the component package. Markings shall include the Supplier name or symbol, part identification and Date Code (year/month/date).
DC 3 3 2
Production Day : 1 ~ V
Production Month : 1 ~ 9, 10(X), 11(Y), 12(Z)
Christian Calendar : 2003 - 3
DOOCO Electronics : DC

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Print 1 2 3 4 5 6 7 8 9 A B C D E F G
Day 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Print H I J K L M N O P Q R S T U V










8. Factory Automation and Identification

Tape and Reel packing per with the following conditions: As per Figures 4 or per approved variant of tatp tolerance dimensions.

8. 1. 1. Tray : 320*300*12.3t
8. 1. 2. One Tray :200 PCS ，15*200=3000pcs
8. 1. 2. One BOX： 330*310*120t








9. Cautions

9. 1. Allowable range for use
Unless it is used in accordance with the specifications, the performance and life
may be considerably reduced.
Due attention should be paid to the voltage and current ranges for use.

9. 2. Handing of motor
9. 2. 1. To handle the motor, hold the motor case softly.
9. 2. 2. Do not bring a magnetized object near or into contact with the surface because there is a fear of performance being deteriorated.
9. 2. 3. Due attention must be paid to the handling and working environments because such objects as powder if attracted by the motor magnet, will cause noise, characteristic deterioration, thus reducing the reliability.