Bone conduction transducer for wearable products

Customer Name

JS Part No

RC-BC27

Customer’s Model

Description

8ohm 0.8W transducer

NO.

Test Item

Specifications

Test condition

1

Impedance

8.0 Ω±15%

AT 1000 HZ

2

DCR

7.8 Ω±15%

AT 1000 HZ

3

Operation

Must be normal

Program source 0.4 W

4

Sweep test

Must be normal

Sine wave

1.8 V  255HZ-10KHZ

5

F0

255 HZ ±25%

Without baffle

6

Sensitivity

83±3dB average at

500,2k,4k,10kHZ

At 1.8 V axis calculated

From0 .01M

7

Rated freq.response

F0-----20KHZ

Sensitivity –10 dB

8

Power input

Normal 0.4 W

Maximum 0.8 W

9

Distortion

5% MAX

At 1KHZ 0.1M 0.4 W

10

Life test

After test,meet Item 3,4&5

Pink noies   0.4 W  24 hrs

255HZ-20KHZ

11

Heat test

After test,meet Item 3,4&5

72±2℃;20-50%AR.H.24hrs

12

Humidity test

After test,meet Item 3,4&5

40±2℃;90-95%AR.H.24hrs

13

Cold test

After test,meet Item 3,4&5

-25±3℃;  -%AR.H.8hrs

14

Slide Shock Test

Must be normal

Coasts from 1meter long slide along  75 angles

15

Magnet

Ne-Fe-B    Hard Ferrite   oz or    g

16

Flux density

Gauss

17

Net Weight

2.2±15% g or    0.077±15% oz

18

Polarity

When a positive volts d.c.is supplied from the speaker terminal marked(+)and a Negative volts to the other terminal the diaphram must move toward the front

19

Dimension

D:10.8mm,H:6.6±0.2mm

20

Voice

8

21

Use

Headphone, eyeglasses, hearing aid