常州FDS-280055R8W1.0扬声器**薄喇叭福鼎厂家直销

DESCRIPTION 

  常州FDS-280055R8W1.0扬声器**薄喇叭发音福鼎厂家直销

 描述

 

 1.Characteristics

ITEM

SPECIFICATIONS

01

Type

Dynamic speaker

02

Dimension

External diameter28 mm

03

Rated Input Power

1.0W

04

Max. Input Power

1.5W

05

Impedance

8 ohm ± 15% at1500Hz.

06

Resonance Frequency (Fo)

650Hz ± 20% at  Fo, 1V

07

Sensitivity (S.P.L.)

97 dB(1.0W/0.1m) ± 3 dB

 at AVE  0.8K 1.0K 1.2K1.5K Hz

08

Frequency Range

Fo –5 KHz

09

Total Harmonics Distortion

Max8 % at 1 KHz,1.0W.

10

Voice Coil

Diameter13.3 mm

11

Magnet

 Rare earth permanent (Nd-Fe-B) magnet Φ12.6 x1.8 mm

12

Weight

7.0g ± 0.3g

13

Appearance

Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.

14

Operation Test

Must be normal at program source –1.0 W

15

Buzz, Rattle, etc.

Should not be audible at2.83V sine Wave between Fo to 20KHz

16

Polarity

When positive voltage is applied to the terminal marked (+), diaphragm should move to the front.

17

Terminal Strength

Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.

18

Temperature

Operating temperature: -20℃ to +60℃

Storage  temperature: -30℃ to +70℃

2.1 Electrical and Mechanical Characteristics

2.2. MEASURING METHOD

Test Condition

A.STANDARD

Temperature : 15 ~ 35℃

Relative humidity : 25% ~ 85%,

Atmospheric pressure : 860mbar to 1060mbar.

Atmospheric pressure : 860mbar to 1060mbar.

 

 B.BASIC

Temperature : 20±3℃

Relative humidity : 60% ~ 70%,

Atmospheric pressure : 860mbar to 1060mbar

C.Standard Test Fixture

1.Input Power :1.0W

2.Zero Level : -dB

3.Mode : SPEAKER

4.potentiometer Range : 50dB

5.Sweep Time : 0.5sec

11.png

3.FrequencyResponse Curve

 12.png
 

4.Dimension

 13.png

5. Reliability test

 

Items.

Specifications

01

High temp. Test

Keep 96 hours at +70℃±3℃ and leave 3 hours in normal temperature and then check

02

Low temp. Test

Keep 96 hours at -30℃±3℃ and leave 3 hours in normal temperature and then check

03

Humidity test

Keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked.

04

Temp./Humidity cycle

The part shall be subjected 5 cycles. One cycle shall be 12 hours and consist of;

 

05

Thermal cycle test.

Low temperature: -30℃±3℃, temperature:+70℃±3℃, cycle: 1 hour/cycle each, and then keep 5 cycles in a room.

06

Vibration

10~200~10Hz sin-wave sweep 15min. 5G(constant)

X,Y, Z 3 direction. 2 hours each, total 6 hours.

07

Fix drop test

Fix on jig. Then drop from 152cm height to the concrete floor

X, y, z 6 direction. 5 times each, total 30 times.

08

Free drop test

Free drop from 100cm height to the concrete floor

X, y, z 6 direction. 1 times each, total 6 times.

09

Rated Power test

Rated Power white noise is applied for 96 hours

10

Max Power test

Max power 1 min on – 2 min off 10 cycles.

11

Terminal strength test

Capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection.

Criterion:

After these test , the change of S.P.L shall be within ±3 dB .

 

SOLDERING CONDITION

Recommend using constant branding iron in 30W, and in temperature range 350°C.

Soldering time not over2 seconds.

 

6.Packing

 

Each minimum package unit of products shall be in a carton box and it shall be clearly marked with

Part Number, quantity and outgoing inspection number. There shall be no mechanical damage on

products during transportation and/or in storage.