Damde

FHDDMT50C


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FHDDMT50C

Parts shall be measured under one condition (temperature: 5~35 ℃, humidity: 45% ~ 85% R.H., atmospheric pressure: 860 ~ 1060hPa), unless standard conditions (temperature: 25±3 ℃, humidity: 60±10%R.H. atmospheric pressure: 860 ~ 1060hPa) are adjusted.

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Keywords: buzzer | horn | materialized film

Product Description

1.SPECIFICATION
Speaker

1

Dimension

φ 50 * H 22.5mm

2

Impedance

4Ohm ± 20% at 1.0KHz

3

Rated Input Power

2.0W

4

Max Input Power

2.5W

5

Lowest Resonance Frequency

150 20% Hz

6

Audible Noise

The input shall set be at rated noise power(2.0W). Using an audio oscillator sweep from F0 to 20KHZ in free air. There shall be no buzzes,rattles,nor spurious noises.

Sound Pressure Level

97±3dB SPL(0.1m,1.0W) at 1.0KHz (0dB SPL = 20μPa)

8

Distortion

Less exceeded ≤ 10% at 1.0KHz

9

Operating temperature

-20 ℃ to +60 ℃

10

Store Temperature

-30 ℃ to +70 ℃

2.Dimensions

3.Reliability Test Reliability Test

4.1

High Temperature Test


High Temperature: +70 ℃ 3 ℃

Duration : 48hours

4.2

Low Temperature Test


Low Temperature: -30 ℃ 3 ℃

Duration : 48hours

4.3

Humidity Test


Temperature: +40 ℃ 3 ℃
Relative humidity: 90% ~ 95% RH

Duration : 48hours

4.4

Vibration Test


Vibration: 10Hz ~ 55Hz
Amplitude: 1.5mm or acceleration : 50m/s2

Duration : 2h per axis = 10cycles ; 3 axis

4.5

Temperature Cycle Test


Temperature: -30 ℃ +80 ℃
Duration : 1hours 1hours

Cycle: 5 Cycle

4.6


Drop Test

(under the unit)


Height: 1m

Cycle: 5 Cycles

4.7

Load Test


Noise: White noise
Power: 2.0W

Duration: 48 hours 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

5.Frequency Response

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Submission

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