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S20

1. SCOPE

This specification is applied to the dynamic speaker for cellular handset

2. GENERAL SPECIFICATIONS

 

2.1

Mechanical Drawing 

With Dimensions

Φ20±0.2mm×3.1±0.3mm as shown Fig3

2.2

Weight

Approx  2.5g

2.3

Operating Temperature

-20℃~+70

2.4

Storage Temperature

-40℃~+80

3. SPEAKER MODE

 

3.1

Impedance

8Ω±15% at 2000Hz 1.0V

3.2

Rated Input Power

0.8W

3.3

Max Input Power

1.0W must be normal at a white noise for one minute

3.4

Sound Pressure Level

93±3dB/0.1W 0.1M at 0.8,1.0,1.2,1.5KHz Average

3.5

Resonance Frequency (f0)

800Hz±20% at 1.0V

3.6

Frequency Range

f0Hz15KHz

3.7

Frequency Response Curve

Shown in Fig2

3.8

Buzzer & Rattles

Must be normal sine signal at 2.5V from f0Hz to 20KHz sweeping

3.9

Total Harmonic Distortion

Less than 5% at 1KHz (input 1.0W)

3.10

Polarity

When a positive D.C current is applied to terminal marked(+)diaphragm shall move forward

4. RELIABILITY TESTS

       AFTER TEST

Sound pressure level of speaker difference shall be within ±3dB after test at 1.0,1.2,1.5,2.0KHz Average

   

 

4.1

High  Temperature  Test

High  Temperature:   +70℃±3

Duration :            96 hours

4.2

Low  Temperature  Test

Low  Temperature:    -20℃±3

Duration :            96 hours

4.3

Humidity  Test

Temperature:         +40℃±2

Relative  humidity:    90%96% RH

Duration :            96 hours

4.4

Vibration  Test

Vibration:            10Hz55Hz10Hz   Oct/min

Amplitude:           1.5mm

Duration :            2 hours in each of 3 axes

4.5

Temperature  Cycle  Test

Temperature:         -20      +70

Duration :            2 hours    2 hours

Cycle:               5 Cycle

4.6

Drop  Test

(under the unit)

Height:              1.5m

Cycle:               12 Cycles

4.7

Load  Test

Noise:               White noise (EIA filter)

Power:              1.0W

Duration:            96 hours

5. STANDARD TEST CONDITIONS

      Temperature:         17℃~25

      Relative Humidity:    45%85%(RH)

      Air Pressure:         860hpa1060hpa

6. JUDGEMENT TEST CONDITIONS

      Temperature:         20±2

      Relative Humidity:    60%70%(RH)

      Air Pressure:         860hpa1060hpa

7. SPEAKER MODE MEASURING CIRCUIT

4(2).png

(Fig 1)

8. SPEAKER MODE FREQUENCY RESPONSE CURVE

      A: Frequency Resonance Mage dB re 20.00μPa

5.png

(Fig 2) 


9. PRODUCT OUTSIDE VIEW

       Unite: mm

      Unless otherwise specified,

      Tolerance: ±0.2mm

6.png

(Fig 3)


         NO.

PART NAME

MATERIAL

QTY

1

Cap

SUS 304

1

2

Diaphragm

PEN

1

3

Magnet

Nd Fe B

1

4

Plate

SPCC

1

5

Voice Coil

POLYURETHANE

ENAMELLED WIRE

1

6

Frame

PPS

1

7

PCB

FR-4

1

8

Gasket

Adhesive

1

9

Wire

UL1571 AWG32

2/2

10. PACKING METHOD

7.png

Remark:

50 pcs per tray

10 trays for unit

500 pcs per carton

4 carton per box

Total:2000 pcs per box

Size:46×28×28cm     


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