FHDDMT4028A

常州富鸿达电子有限公司成立于2010年，生产蜂鸣器，喇叭，报警器，咪头等电声器件，是一家集研发、生产、销售一体的企业。

类别：

Multimedia speakers

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产品详情

1.SPECIFICATION
Speaker

1	Dimension	40.228.2 H 11.6mm
2	Impedance	8Ohm ± 20% at 1.2KHz,1.0V
3	Rated Input Power	2.0W
4	Max Input Power	3.0W
5	Lowest Resonance Frequency	400 20% Hz
6	Audible Noise	The input power shall be set at rated noise power(2.0W). Using an audio oscillator sweep from F0 to 16KHZ in free air. There shall be no buzzes,rattles,nor spurious noises.
7	Sound Pressure Level	99±3dB SPL(0.1m,1.0W) at1.0,1.2,1.5,2.0KHz (0dB SPL = 20μPa)
8	Distortion	Less exceeded ≤ 7%
9	Operating Temperature	-20 ℃ to +70 ℃
10	Store Temperature	-30 ℃ to +80 ℃

2.Dimensions

3.Reliability Test Reliability Test

3.1	High Temperature Test	High Temperature: +80 ℃ 5 ℃ Duration: 48 hours
3.2	Low Temperature Test	Low Temperature: -30 ℃ 5 ℃ Duration: 48 hours
3.3	Humidity Test	Temperature: +40 ℃ 5 ℃ Relative humidity: 90% ~ 95% RH Duration: 48 hours
3.4	Vibration Test	Vibration: 10Hz ~ 55Hz Amplitude: 1.5mm or acceleration : 50m/s2 Duration : 2 h per axis = 10cycles ; 3 axis
3.5	Temperature Cycle Test	Temperature: -30 ℃ +80 ℃ Duration : 1hours 1hours Cycle: 5 Cycle
3.6	Drop Test (under the unit)	Height: 1.0m Cycle: 5 Cycle
3. 7	Load Test	Noise: White noise Power: 2.0W Duration: 48hours and satisfy the test listed on item 05,08,14.

The test shall be carried out on the parts that passed 12hours in temperature 20℃.
The sensitivity difference from the initial value shall be within ±3dB.

4.Electrical And Acoustical Measuring Condition