FHDDMT4028A-常州富鸿达电子有限公司

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FHDDMT4028A

所属分类：多媒体喇叭

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产品描述

1.SPECIFICATION
Speaker

1	Dimension	40.228.2H11.6mm
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 exceed≤7%
9	Operating Temperature	-20℃ to + 70℃
10	Store Temperature	-30℃ to +80℃

2.Dimensions

3.Reliability Test 可靠性測試

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 : 2h 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 Cycles
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