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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：

External Excited

Itself Excited

Special Shape

Product Code For Piezoceramic Element

HKP

-27

-26

Electrode Type

Thin Type

Resonant Frequency

Material of Vibration Plate

Diameter of Vibration Plate

Company Code


Note:
(1)	Material of Vibration Plate:	(2)	Electrode Type:
	"B"：Brass		"E"：External Drive
	"S"：Stainless Steel		"S"：Self Drive

Externally excited ceramic elements

A. General Type

Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	Dimensions (mm)				Plate materials
Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	D ± 0.1	d ± 0.2	T ± 0.05	t ± 0.03	Plate materials
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

Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	Dimensions (mm)				Plate materials
Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	D ± 0.1	d ± 0.2	T ± 0.05	t ± 0.03	Plate materials
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

Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	Shape	Dimensions (mm)				Plate materials
Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	Shape	D ± 0.1	d ± 0.2	T ± 0.05	t ± 0.03	Plate materials
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

Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	Dimensions (mm)				Plate materials
Model No.	Resonant Frequency (KHz)	Resonant Impedance (Ω) max	Static Capacitance (pf) 30%	D ± 0.1	d ± 0.2	T ± 0.05	t ± 0.03	Plate materials
HKP-20B2-85E	8.5 ± 0.7	150	35000	20.0	15.0	0.60	0.20	Brass
HKP-25B2-32TE	3.2 ± 0.5	150	180000	25.0	25.0	0.42	0.20	Brass
HKP-35B2-35E	3.5 ± 0.5	150	80000	35.0	25.0	0.80	0.25	Brass
HKP-41B2-7TE	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.

E-mail ：info@hkpiezo.com		Tel：（852）2694 1029
Website：http://www.hkpiezo.com		Fax：（852）2690 3635