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您现在的位置:网站首页 >> 产品中心 >> 产品中心 >> 微型电磁扬声器 >> 微型喇叭DS2790+08A
  • 产品名称: 微型喇叭DS2790+08A
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A.    

Title

Specification of  27mm  8Ω  0.25w  Speaker

       Page

     1/3

 

1.       Normal Specification (常规规格):

NO

编号

ITEM

(项目)

                    SPECIFICATION

                        ( 规格)

 

1

Size

尺寸

26.5*H9.0 mm

 

2

Unit Weight

产品重量

Approx  6.8±0.2Grams.

 

3

Magnet Dimension Weight

磁石尺寸

Materials  Ndfeb   Size: (φ16*φ7.0*5.0) Y25

 

2.Electrical Specification(电气规格)

 

1

Impedance

额定阻抗

8±15% ohm    At  1000Hz/1v.

2

Lower Resonant Frequency

振频率

900Hz±20%   At1.0V

3

Output Sound Pressure Level  (S.P.L)灵敏度

98±3db/1.0Watt0.1Meter.AverageAt1000,1200,1500,2000Hz.Measurement Method Shown In 。

4

Rating  Power

额定功率

Normal: 0.25w   Maximum:0.4w.

5

Response

频率范围

FO~20,000Hz.Average SPL±10db. Shown In 。

6

Distortion

失真率

5% Maximum At 1000Hz0.4w.

7

Buzzes&Rattles

异常音测试

Must de normat 1.4V sine wave detween.

8

Polarity  

极性

When a positiva D.Cvoltage is applied to the terminal marked(+)or red

The diaphragm should move to the front.

9

Terminal strength

接线架结合性能试验

Capable of withstand a500g load fo3sec.Without resulting in any damage

Or rejection.

10

Terminal soldering test

焊接试验

Speaker shall continue to opoerate after 10sec,stabilization test conditionsuppling lead wire anre and solder on the terminal board and maining for 2seconds attemperature of 290-320°C by handirom.

11

Operaring test:

纯音检听

Must de normal at programm source 0.25w

12

Environmental Protection

Regulation

RoHS

 

 

Title

Specification of  27mm  8Ω  0.25w  Speaker

page

       2/3

3.Reliabie Test (可靠性试验)

NO

编号

ITEM

(项目)

                     Test Conditions 

                      (测试条件)

 

1

   Hseat Test

高温试验

Keep(96)hours at+62℃±2℃then remonval backto normal

Temperaturefor 1hours.

 

2

Low temperature test

低温试验

Keep(96)hours at-20℃±2℃then remonval backto normal

Temperaturefor 1hours.

 

3

Temperatureshouck test

      耐温试验

Low temperature: -20℃±2℃high temperature: +62℃±2℃

Cyle:1hour each tempeature.

And then removal back to normal temperature for 1hour.

4

Hlmidiy test

温热试验

Keep(96)hours at 90~95%.+40℃±2℃then removal back to normal

Temperature for 6 hours.

5

       Load Test

连续负荷试验

Shall be normal after test at white nois source(0.25w).(24) hours.

6

Operation Test

动作测试

Inputpowr0.25wsine wave input1.4v Must Be NormaI

7

Vibration Test

振动试验

F=10~55HZ amplitude:1.5mm Test Direction is x,y,z2H/each.

8

Drop Test

跌落试验

Drop a speaker contained in normal box into aboard5mm thick 10timedFrom a height of 0.75m and then should satisfy the test described testItem#1.

9

Insulation Resistance

绝缘阻抗试验

More than 1mΩ  加直流100V±10%。

10

Cold hot circulation

冷热循环

60℃±1℃/0.5h→20℃/0.5h→-20℃/0.5h→20℃/0.5h 10cycles and then on 20℃  3hours.

4. Frequence Response curve (频率曲线图):

 

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