1

Oscillation Frequency

Hz

2731

Vo-p=1/2duty , square wave

2

Operating Voltage

Vo-p

2 ~ 4

3

Rated Voltage

Vo-p

3

4

Current Consumption

mA

MAX. 80

at Rated Voltage

5

Sound Pressure Level

dB

MIN. 85

at 10cm at Rated Voltage

6

Coil Resistance

Ω

16±3

7

Operating Temperature

℃

-20 ~ +70

8

Storage Temperature

℃

-30 ~ +80

9

Dimension

mm

Φ9.0 x H4.5

See appearance drawing

10

Weight (MAX)

gram

0.8

11

Housing Material

PPS( Black )

12

Leading Pin

 Plated Brass(Au)

See appearance drawing

13

Environmental  
Protection Regulation

 RoHS

1

High Temperature
Test (Storage)

After being placed in a chamber with 802℃ for 96 hours and then being placed in normal condition for 2 hours.
Allowable variation of SPL after test: 10dB.

2

Low Temperature
Test (Storage)

After being Placed in a chamber with -302℃ for 96 hours and then being placed in normal condition for 2 hours.
Allowable variation of SPL after test: 10dB.

3

Humidity Test

After being Placed in a chamber with 90-95% R.H. at 402℃ for 96 hours and then being placed in normal condition for 2 hours.
Allowable variation of SPL after test: 10dB.

4

Temperature Cycle
Test

The part shall be subjected to 5 cycles. One cycle shall be consist of :  
Allowable variation of SPL after test: 10dB.

5

Drop Test

Drop on a hard wood board of 4cm thick, any directions ,6 times, at the height of 75cm .
Allowable variation of SPL after test: 10dB.

6

Vibration Test

After being applied vibration of amplitude of 1.5mm with 10 to 55 Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours .
Allowable variation of SPL after test: 10dB.

7

Solderability
Test

Lead terminals are immersed in rosin for 5 seconds and then immersed in solder bath of +3005℃ for 31 seconds .
90% min. lead terminals shall be wet with solder
(Except the edge of terminals).

8

Terminal Strength
Pulling Test

The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds.
No visible damage and cutting off.