BeStar FT-35T-1.8A1-P User Manual

SPECIFICATION

FOR PIEZO ELECTRIC BUZZER

Customer

Date
Page

7 Mar. 13

01 of 05

05TOTAL PAGE

www.be-star.com RoHS

Model Name

FT-35T-1.8A1-P
Product No.Customer P/N
Issue No.

Issue Date

BS/TEY01.446A

2013/03/07

Approval ：

1.Electrical characteristics

2.Dimension

3.Characteristics

4.Measuring Method

5.Reliability Test

6.History　Change 　Record

Drawn by

Checked by

Approved by

Customer approved

BESTAR ACOUSTICS CO.,LTD

No.199 HuangHe West Road.New district,ChangZhou,JiangSu Province,P.R.China

Tel: [phone] Fax: [phone]

E-mail:[e-mail] http://www.be-star.com

FT-35T-1.8A1-P

H

1.Electrical characteristics

1. Resonant Frequency 1.8±0.3 K Hz

2346 5 1

H

G

2. Resonant Impedance 500 ohm max.

G

3. Capacitance at 120Hz 70±30% nF

4. Input Voltage 30 Vp-p

5. Operating Tmperature -20...+70°C

6. Storage Temperature -30...+80 °C

F

F

7. Metal Material Brass

2.Drawing

E

Brass

D

Silver

（ + pos.）

Ceramic

E

D

and shall not be used in whole or in part without its written content

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

C

B

A

Rev.

NoteDate Drawn

6 5

Ø25±0.4

Ø35±0.1

Date:
Drawn by:

Checked by:

Approved by:

2013/03/07

Ｍａ　Ｇｕｏｙａｎｇ
Ｚｈａｏ　Ｚｈｅｎｇ
Ｌｉ　Ｈｏｎｇｙｕａｎ

www.be-star.com [e-mail]

34

0.20±0.02

0.32±0.05

Unit:mm

FT-35T-1.8A1-P

Piezo Ceramic Element

DRG NO: BS/TEY01.446A

2 1

C

B

A

Page:02 of 05

FT-35T-1.8A1-P

H

3.Characteristics:

3.1 Solderability
Solder AWG 30 wire with solder wire(Pb10Sn88Ag2) at 280±10°C on the ceramic , less than 2 seconds
duration of soldering.

G

F

3.2 Lead pull off test
a) Wire to be soldered on ceramic at the edge. It should withstand minimum 20N force applied in 180° .The
wire should not come out before this .The ceramic can be either glued on a surface of can be held in

hand.(Fig.3.2)

b) Wire to be soldered on ceramic at the edage&should be pulled up at 90° The element should be hold on

bottom and wire should be pulled up .It should withstand at least for 2.8N force(Fig.3.1)

９０°

Lead Wire

156 4 3 2

H

G

F

Lead Wire

Fig.3.1 Direction of Lead Wire

4.Measuring Method

E

4.1.Resonant Frequency/ Resonant Impedance:

Piezoelectric disc shall be clamped at a node or edge point ,figure to be free from any mechanical
stresses,and measure its resonant frequency and resonant impedance by using vector impedance
analyzer or equivalent.

D

Input frequency shall be swept within 1 to 5 kHz, where the resonant frequency is defined and the
frequency
where the impedance shows minimum value, this impedance shall be the resonant impedance.

and shall not be used in whole or in part without its written content

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

4.2.Capacitance:

A electrostatic capacity capacitance shall be measured at 120Hz by using LCR meter, such as DF2812A
LCR number bridge or equivalent. The part shall be clamped in the same way as the measurement of

C

resonant frequency / resonant impedance mentioned in section 4.1.

4.3.Insulation Resistance:

An insulation resistance shall be measured by using an insulation resistance meter,suach as DF2863
insulation resistance meter.

4.4.Measureing Condition:

Parts shall be measured under a condition(Temperature:+15°C to +30°C,Humidity:60 to 90% R.H.)

B

unless the standard condition(Temperature:+25±3°C,Humidity:60±10%R.H.)is redulated to
measure.

Fig.3.2 Direction of Lead Wire

E

D

C

B

Date:
Drawn by:

A

Rev.

DrawnDate Note

56

Checked by:

Approved by:

www.be-star.com [e-mail]

4 3

2013/03/07

Ｍａ　Ｇｕｏｙａｎｇ
Ｚｈａｏ　Ｚｈｅｎｇ
Ｌｉ　Ｈｏｎｇｙｕａｎ

FT-35T-1.8A1-P

Piezo Ceramic Element

DRG NO: BS/TEY01.446A

A

Page:03 of 05

12

156 4 3 2

H

FT-35T-1.8A1-P

5.Reliability Test:

5.1.High Temperature Test
Temperture +90°C
Duration 240hrs

G

F

E

D

and shall not be used in whole or in part without its written content

5.2.Low Temperature Test
Temperature -20°C
Duration 240hrs

5.3.Temperature Cycle Test

-20 C
30min

+20 C

15min

all these tests above should be measured after leaving normal temperature for 2hrs.

Cycles 5

5.4.Humidity
Temperature 40±2°C
Relative Humidity

90~95R.H.

Duration 240hrs

5.5.Vibration Test

Vibration Frequency 10~55Hz
Amplitude 1.52mm
Duration 2 hrs each of 3 axis

5.6.Shock

Piezoelectric disc shall be measured after applying shock at (980m/s2) for each
three mutually
perpendicular (XYZ) directions by half sine waves,3 times each

H

G

+90 C

+20 C

15min30min

F

E

D

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

C

B

A

Rev.

DrawnDate Note

56

Date:
Drawn by:

Checked by:

Approved by:

www.be-star.com [e-mail]

2013/03/07

Ｍａ　Ｇｕｏｙａｎｇ
Ｚｈａｏ　Ｚｈｅｎｇ
Ｌｉ　Ｈｏｎｇｙｕａｎ

4 3

FT-35T-1.8A1-P

Piezo Ceramic Element

DRG NO: BS/TEY01.446A

C

B

A

Page: 04 of 05

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6 5 4 3

FT-35T-1.8A1-P

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6.History change record

2 1

H

version
No.

Before After

A

F

E

D

Change Items

Date

13/03/07

Drawn

Ｍａ　Ｇｕｏｙａｎｇ

Approved

GG

Ｌｉ　Ｈｏｎｇｙｕａｎ

F

E

D

and shall not be used in whole or in part without its written content

This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.

C

B

A

DateRev.

Drawn

Note

Date:
Drawn by:

Checked by:

Approved by:

2013/03/07

Ｍａ　Ｇｕｏｙａｎｇ
Ｚｈａｏ　Ｚｈｅｎｇ
Ｌｉ　Ｈｏｎｇｙｕａｎ

www.be-star.com [e-mail]

346 5

FT-35T-1.8A1-P

Piezo Ceramic Element

DRG NO: BS/TEY01.446A

2 1

C

B

A

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