Damde

FHDDMT40B


+
  • a11.jpg
  • a13.jpg
  • a12.jpg

FHDDMT40B

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.

Online message

Keywords: buzzer | horn | materialized film

Product Description

1.SPECIFICATION
Speaker

1

Dimension

φ 40 * H 20mm

2

Impedance

4Ohm ± 20% at 1.0KHz

3

Rated Input Power

4.0W

4

Max Input Power

5.0W

5

Lowest Resonance Frequency

300 20% Hz

6

Audible Noise

The input power shall set be rated noise power(4.0W). Using an audio oscillator sweep from F0 to 20KHZ in free air. There shall be no buzzes,rattles,nor spurious noises.

Sound Pressure Level

98±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

3.1

High Temperature Test


High Temperature: +70 ℃ 3 ℃

Duration: 48 hours

3.2

Low Temperature Test


Low Temperature: -30 ℃ 3 ℃

Duration: 48 hours

3.3

Humidity Test


Temperature: +40 ℃ 3 ℃
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 = 10 cycles ; 3 axis

3.5

Temperature Cycle Test


Temperature: -30 ℃ +70 ℃
Duration : 1hours 1hours

Cycle: 5 Cycle

3.6


Drop Test

(under the unit)


Height: 1m

Cycle: 10 Cycles

3.7

Load Test


Noise: White noise
Power: 4.0W

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

Online message

Submission
Mobile phone two-dimensional code

Mobile two-dimensional code

Contact Us

0086-519-83822009

Mobile Phone: 008613813568186
Fax: 0519-88739926
Mailbox:
eve.jiang@czfhd.net
Address:
Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province

Copyright©2023 All Rights Reserved of Changzhou FHD electronics Co.,Ltd.

Business license