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1.SCOPE:  

This specification covers our product of dynamic Speaker unit for mobile telephone use.

2.MECHANICAL LAYOUT & DIMENSIONS:  

Shown in Fig.3

3.SIZE: 50×H8

4.NET  WEIGHT :  

Approx.   ±0.2g

5.SPEAKER ELECTRICAL AND ACOUSTICAL CHARACTERISTICS

5.1 SOUND PRESSURE LEVEL

    85±3dB  SPL @ 0.8,1.0,1.2,1.5KHz in average ( 0dB SPL=20μPa )

    Measuring condition: 0.1W(sine wave) 0.1M measured with baffler shown in Fig.2

5.2 IMPEDANCE: 8±15%Ω ( @ 2KHz 1V )

5.3 DC Resistance: 7.4±15%Ω 

5.4 MEASURING DIAGRAM : Shown in Fig.1

5.5 FREQUENCY RESPONSE MASK & TYPICAL FREQUENCY RESPONSE CURVE:

Shown in Fig.2

5.6 RATED POWER: 1.0W.   MAX POWER: 1.5W.

5.7 RESONANCE FREQUENCY (Fo):450±20% @1V.(without baffler)

5.8 DISTORTION : Less then 10 % at 1kHz 0.1W.

5.9 AUDIBLE NOISE: Must be free audible noise 200～4kHz, Input level up to 2.83 Vrms.

5.10 FREQUENCY RANGE:  Fo～ 20kHz resonant frequency down -10dB. 

5.11 OPERATING TEMPERATURE:

      -20℃ to +70℃ 

5.12 STORAGE TEMPERATURE:

-30℃ to +80℃

  5.13 FRONT CLEARANCE: 

keep clear of Speaker front by 0.0mm for undisturbed sound reproduction.:

-30℃ to +80℃

FREQUENCY MEASURING DIAGRAM  ( SPEAKER  MODE ) (Fig.1)

Fig.1 Illustration of measuring diagram (speaker mode)

·FREQUENCY RESPONSE MASK & TYPICAL FREQUENCY RESPONSE CURVE

(SPEAKERMODE)(Fig.2) 

Fig.2 Frequency response mask & typical frequency response curse(speaker mode)

DIMENSIONS AND MATERIAL DATA(Fig.3)

Fig.3

01.MATERIAL OF FRAME                                                              MF50-10

02.MATERIAL OF YOKE                                                                 SPCC Plate

03.MATERIAL OF POLE PIECE                               SPCC

04.MATERIAL OF MAGNET                             NdFeB Zn Plated

05.MATERIAL OF CAP                                          PBT

06.MATERIAL OF DIAPHRAGM                            Mylar PET

07.MATERIAL OF COIL                                                                                                                                                                         COPPER WIRE (KSV)

08.MATERIAL OF WIRE                                         NON

09.MATERIAL OF DUSTPROOF COTCH                         NON-WOVEN

                10.MATERIAL OF SCREEN PORON 

6.RELIABILITY TEST

  The sound pressure as specified shall neither deviate more than ±3dB from the initial value, nor any significant damage after any of following testing.

  6.1 LOAD TEST:

     White noise (EIA filter) for 96hours @ 1.0W input power.

  6.2 HUMIDITY TEST:

     Temperature:     +40±2℃            Relative Humidity:  90%～95%

      Duration :     16 hours

  6.3 HIGH TEMPERATURE TEST:

      High Temperature:      +70℃             Duration:     16 hours

6.4 LOW TEMPERATURE TEST:

Low Temperature:       -30℃             Duration:     16 hours

6.5 DROP TEST:

    Height:      1.5M                     

      Cycle:       10 cycles(Onto the concrete board)

6.6 HEAT SHOCK TEST:

   High temperature :    +70℃

    Low temperature :      -30℃

    Changeover time: <30secends                                                              

    Duration        :   1 hour

    Cycle          :               5

6.7 TEMPERATURE CYCLE TEST:

   Temperature :                 -30℃  +70℃

    Duration    :                    45 minutes

    Temperature gradient:    1～3℃/minutes     

    Cycle:                             5