Piezoceramic Elements
 
    The piezo element is made by gluing piezo ceramic elements onto metal plates, and it is excited by an oscillatory circuit, which translates electrical energy into mechanical energy by reversed piezoelectric effects. The mechanical energy then makes the ceramic element elongated or contracted, which produces sound. Its mode of vibration is shown in the figure below.

   
    Classified:

 

 
Part Numbering:

① Diameter of metal plate

② Material of metal plate:

    B: Brass    S: Stainless Steel

    N: Nickel    T: Tin    P: Phosphorus bronze

③ 2: Double ceramic plate    H: Special type

④ Resonant frequency ( Unit: 1000Hz )

⑤ T: Thin type    Omitted: General type

⑥ Driving type    E: External drive    S: Self drive

⑦ Feedback electrode shape

 

Externally excited ceramic elements
  A. General Type
Part Number
Resonant
Frequency
(KHz)
Resonant
Impedance
(Ω) max
Static
Capacitance
(pf) 30%
Dimensions (mm)
Plate
materials
D ± 0.1
d ± 0.2
T ± 0.05
t ± 0.03

HKP-9B-18E

18.0 ± 1.5

1000

6000

9.0

7.0

0.25

0.15

Brass

HKP-9B-22E

22.0 ± 1.5

1000

6000

9.0

7.0

0.30

0.10

Brass

HKP-9B-28E

28.0 ± 2.0

1000

3500

9.0

7.0

0.35

0.20

Brass

HKP-9B-31E

31.0 ± 5.0

300

3500

9.0

7.0

0.40

0.20

Brass

HKP-10B-24E

24.0 ± 2.0

600

3500

10.0

7.0

0.40

0.20

Brass

HKP-12B-16E

16.5 ± 1.0

800

6000

12.0

9.0

0.40

0.20

Brass

HKP-13B-14E

13.5 ± 1.0

600

8000

13.5

10.0

0.40

0.20

Brass

HKP-20B-53E

5.3 ± 0.5

400

22000

20.0

15.0

0.30

0.15

Brass

HKP-20B-62E

6.2 ± 0.7

300

18000

20.0

15.0

0.40

0.20

Brass

HKP-20B-68E

6.8 ± 0.7

250

15000

20.0

15.0

0.45

0.25

Brass

HKP-20B-70E

7.0 ± 0.7

250

15000

20.0

15.0

0.45

0.20

Brass

HKP-20B-75E

7.5 ± 0.7

250

15000

20.0

15.0

0.50

0.25

Brass

HKP-21B-55E

5.5 ± 0.5

300

18000

21.0

15.0

0.40

0.20

Brass

HKP-23.5B-50E

5.0 ± 0.5

300

25000

23.5

20.0

0.50

0.25

Brass

HKP-27B-30E

3.0 ± 0.5

200

30000

27.0

20.0

0.35

0.15

Brass

HKP-27B-35E

3.5 ± 0.5

250

30000

27.0

20.0

0.40

0.20

Brass

HKP-27B-36E

3.6 ± 0.5

600

40000

27.0

25.0

0.45

0.20

Brass

HKP-27B-38E

3.8 ± 0.5

200

25000

27.0

20.0

0.45

0.20

Brass

HKP-27B-42E

4.2 ± 0.5

200

25000

27.0

20.0

0.50

0.25

Brass

HKP-27S-42E

4.2 ± 0.5

200

25000

27.0

20.0

0.45

0.20

SUS

HKP-27S-44E

4.4 ± 0.5

200

25000

27.0

20.0

0.45

0.20

SUS

HKP-29B-32E

3.2 ± 0.5

400

25000

29.0

20.0

0.45

0.25

Brass

HKP-29B-36E

3.6 ± 0.5

250

40000

29.0

25.0

0.45

0.25

Brass

HKP-31B-28E

2.8 ± 0.5

300

25000

31.0

25.0

0.45

0.20

Brass

HKP-31S-32E

3.2 ± 0.5

300

25000

31.0

20.0

0.45

0.20

SUS

HKP-35B-24E

2.4 ± 0.5

250

50000

35.0

25.0

0.42

0.20

Brass

HKP-35B-28E

2.8 ± 0.5

250

40000

35.0

25.0

0.50

0.25

Brass

HKP-35S-28E

2.8 ± 0.5

250

40000

35.0

25.0

0.50

0.25

SUS

HKP-41B-15E

1.5 ± 0.5

600

40000

41.0

25.0

0.45

0.20

Brass

HKP-45B-14E

1.4 ± 0.5

1000

40000

45.0

25.0

0.42

0.20

Brass

HKP-47B-35E

3.5 ± 0.5

250

40000

47.0

25.0

0.47

0.25

Brass

HKP-49B-32E

3.2 ± 0.3

300

40000

49.0

25.0

0.45

0.20

Brass

HKP-50B-28E

2.8 ± 0.5

250

50000

50.0

30.0

0.40

0.20

Brass

HKP-50B-29E

2.9 ± 0.5

200

50000

50.0

25.0

0.50

0.25

Brass

HKP-50B-30E

3.0 ± 0.5

200

40000

50.0

25.0

0.45

0.20

Brass

HKP-50B-32E

3.2 ± 0.5

200

40000

50.0

25.0

0.50

0.25

Brass

 

  B. Thin Type
Part Number
Resonant
Frequency
(KHz)
Resonant
Impedance
(Ω) max
Static
Capacitance
(pf) 30%
Dimensions (mm)
Plate
materials
D ± 0.1
d ± 0.2
T ± 0.05
t ± 0.03

HKP-8B-22TE

22.0 ± 2.0

800

3500

8.0

5.0

0.22

0.10

Brass

HKP-9B-16TE

16.0 ± 2.0

800

6500

9.0

3.0

0.22

0.10

Brass

HKP-9B-19TE

19.0 ± 1.0

1000

4000

9.0

6.0

0.30

0.20

Brass

HKP-10B-11TE

11.0 ± 1.5

800

6500

10.0

7.0

0.22

0.10

Brass

HKP-10S-11TE

11.0 ± 1.0

3000

4000

10.0

6.0

0.22

0.10

SUS

HKP-12B-65TE

6.5 ± 0.7

500

15000

12.0

9.0

0.12

0.05

Brass

HKP-12B-90TE

9.0 ± 0.7

800

12000

12.0

9.0

0.22

0.10

Brass

HKP-15B-60TE

6.0 ± 0.5

800

20000

15.0

12.0

0.22

0.10

Brass

HKP-15B-63TE

6.3 ± 0.5

600

15000

15.0

11.0

0.22

0.10

Brass

HKP-15B-67TE

6.7 ± 0.5

600

15000

15.0

11.0

0.23

0.10

Brass

HKP-18B-38TE

3.8 ± 0.5

700

12000

18.0

11.0

0.22

0.10

Brass

HKP-20B-33TE

3.3 ± 0.3

300

35000

20.0

15.0

0.22

0.10

Brass

HKP-20B-34TE

3.4 ± 0.5

400

320000

20.0

14.3

0.22

0.10

Brass

HKP-20B-39TE

3.9 ± 0.5

300

22000

20.0

15.0

0.25

0.10

Brass

HKP-20S-42TE

4.2 ± 0.3

300

25000

20.0

15.0

0.22

0.10

SUS

HKP-21B-35TE

3.5 ± 0.5

250

60000

21.0

15.0

0.22

0.10

Brass

HKP-21B-39TE

3.9 ± 0.3

300

60000

21.0

20.0

0.22

0.10

Brass

HKP-27B-23TE

2.3 ± 0.3

200

60000

27.0

20.0

0.22

0.10

Brass

HKP-27B-25TE

2.5 ± 0.3

200

100000

27.0

25.0

0.22

0.10

Brass

HKP-30B-15TE

1.5 ± 0.5

800

60000

30.0

20.0

0.22

0.10

Brass

HKP-31B-14TE

1.4 ± 0.3

1000

60000

31.0

20.0

0.22

0.10

Brass

HKP-31B-15TE

1.5 ± 0.3

600

70000

31.0

22.0

0.22

0.10

Brass

HKP-31B-17TE

1.7 ± 0.5

500

60000

31.0

20.0

0.22

0.10

Brass

HKP-31B-20TE

2.0 ± 0.3

200

90000

31.0

25.0

0.22

0.10

Brass

HKP-31S-14TE

1.4 ± 0.3

600

70000

31.0

22.0

0.22

0.10

SUS

HKP-31S-19TE

1.9 ± 0.5

500

60000

31.0

20.0

0.22

0.10

SUS

HKP-32B-16TE

1.6 ± 0.3

800

60000

32.0

20.0

0.22

0.10

Brass

HKP-32B-32TE

3.2 ± 0.3

800

60000

32.0

20.0

0.22

0.10

Brass

HKP-35B-15TE

1.5 ± 0.5

300

90000

35.0

25.0

0.22

0.10

Brass

HKP-35B-16TE

1.6 ± 0.3

400

80000

35.0

25.0

0.30

0.10

Brass

HKP-35S-16TE

1.6 ± 0.5

300

90000

35.0

25.0

0.22

0.10

SUS

HKP-41B-10TE

1.0 ± 0.5

900

90000

41.0

25.0

0.22

0.10

Brass

HKP-41S-14TE

1.4 ± 0.5

600

90000

41.0

25.0

0.22

0.10

SUS

HKP-45B-10TE

1.0 ± 0.5

1000

100000

45.0

25.0

0.22

0.10

Brass

HKP-45B-28TE

2.8 ± 0.5

300

100000

45.0

25.0

0.25

0.15

Brass

HKP-50B-20TE

2.0 ± 0.3

500

90000

50.0

25.0

0.22

0.10

Brass

 

 

Itself-excited ceramic elements


Part Number
Resonant
Frequency
(KHz)
Resonant
Impedance
(Ω) max
Static
Capacitance
(pf) 30%
Shape
Dimensions (mm)
Plate
materials
D ± 0.1
d ± 0.2
T ± 0.05
t ± 0.03

HKP-27B-40S

4.0 ± 0.5

200

25000

A

27.0

20.0

0.45

0.20

Brass

HKP-27B-42S

4.2 ± 0.5

200

25000

A

27.0

20.0

0.50

0.25

Brass

HKP-35B-21S

2.1 ± 0.5

400

43000

A

35.0

25.0

0.37

0.20

Brass

HKP-35B-26S

2.6 ± 0.5

250

35000

A

35.0

25.0

0.50

0.25

Brass

HKP-35B-29S

2.9 ± 0.5

250

38000

B

34.55

25.0

0.50

0.25

Brass

HKP-35S-30S

3.0 ± 0.5

250

35000

A

35.0

25.0

0.50

0.25

SUS

HKP-12B-70TS

7.0 ± 0.7

1600

9000

F

12.0

9.0

0.17

0.10

Brass

HKP-15B-63TS

6.3 ± 0.5

1000

15000

A

15.0

11.0

0.22

0.10

Brass

HKP-18B-38TS

3.8 ± 0.5

1500

16000

F

18.0

12.0

0.22

0.10

Brass

HKP-20B-28TS

2.8 ± 0.3

400

25000

A

20.0

15.0

0.22

0.10

Brass

HKP-20B-36TS

3.6 ± 0.3

400

25000

A

20.0

15.0

0.22

0.10

Brass

HKP-20B-40TS

4.0 ± 0.3

400

25000

A

20.0

15.0

0.22

0.10

Brass

HKP-20B-46TS

4.6 ± 0.3

400

25000

A

20.0

15.0

0.22

0.10

Brass

HKP-27B-26TS

2.6 ± 0.3

300

50000

A

27.0

20.0

0.22

0.10

Brass

HKP-35B-15TS

15.0 ± 0.5

300

80000

A

35.0

25.0

0.22

0.10

Brass

 

 

Special Shape
Part Number
Resonant
Frequency
(KHz)
Resonant
Impedance
(Ω) max
Static
Capacitance
(pf) 30%
Dimensions (mm)
Plate
materials
D ± 0.1
d ± 0.2
T ± 0.05
t ± 0.03
8.5 ± 0.7
150
35000
20.0
15.0
0.60
0.20
Brass
3.2 ± 0.5
150
180000
25.0
25.0
0.42
0.20
Brass
3.5 ± 0.5
150
80000
35.0
25.0
0.80
0.25
Brass
0.7 ± 0.3
400
160000
41.0
25.0
0.33
0.10
Brass
 

 


Copyright by Hong Kong Piezo Co Ltd. 2003
 Address:Flat 15, 9/F., Block A, Veristrong Industrial Centre, 34-36 Au Pui Wan Street, Fo Tan, N.T., Hong Kong.

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