Crescent Electrode Customized 40kHz Ultrasonic Piezo Elements Disc Piezoelectric Ceramic Sensors

• Customization: Available
• Type: High Frequency Ultrasonic Sensor
• Output Signal Type: Digital Type
• Model NO.: Disc
• Production Process: Ceramics
• Sensitivity: Medium
• Probe Type: Ultrasound Probe
• Measuring Medium: Liquid
• Detection mode: Direct Reflection Type
• IP Rating: IP67
• Certification: ISO
• Customized: Customized
• Frequency: 40kHz
• Capacitance: 2500PF±15%
• Customize: Yes
• ODM/OEM: Yes
• Transport Package: Shipping
• Specification: D40*8mm
• Trademark: FT
• Origin: Weifang China
• HS Code: 8541600000
• Production Capacity: 5000000 Pieces/Month
• Package Size: 30.20cm * 12.60cm * 5.50cm
• Package Gross Weight: 0.300kg

Product Description

Product Description

 

Piezoelectric ceramic sheet, commonly known as buzzers. A piezoelectric ceramic sheet is an electronic sound-producing component. Between two copper circular electrodes, a piezoelectric ceramic material is placed. When an alternating audio signal is connected to the two electrodes, the piezoelectric sheet will vibrate according to the size and frequency of the signal, thereby generating corresponding sounds. Due to its simple structure and low cost, piezoelectric ceramic sheets are widely used in electronic and electrical fields such as toys, audio electronic watches, electronic instruments, electronic clocks, timers, etc.

 

Working principle:
When an electric voltage is applied to a piezoelectric ceramic, it will undergo mechanical deformation in response to changes in voltage and frequency. On the other hand, when the vibrating piezoelectric ceramic is subjected to vibration, an electric charge will be generated. Utilizing this principle, when a voltage signal is applied to a vibrator composed of two piezoelectric ceramics or a piezoelectric ceramic and a metal plate, which is called a dual piezoelectric wafer element, it will cause bending vibration and emit ultrasonic waves. Conversely, when ultrasonic vibration is applied to the dual piezoelectric wafer element, an electrical signal will be generated. Based on these effects, piezoelectric ceramics can be used as ultrasonic wave sensors.

Technical Parameters
 

Parameter	Symbol	Unit	Material Name
			P-4	P-8	P-5A18	P-5A20	P-5H32	H-1A	H-1B	FT-48	Bst
Relative Dielectric Constant	∑^Tr³		1150	1200	1800	2000	3000	1800	870	4800	170
Dielectric Loss	Tgδ	%	0.5	0.4	2	2	2	1.7	2.1	2.3	1
Electromechanical Coupling Factor	Kp		0.55	0.53	0.62	0.62	0.65	0.63	0.58	0.66	-
	K31		0.31	0.29	0.36	0.37	0.36	0.37	0.34	0.39	-
	K33		0.65	0.6	0.73	0.71	0.7	-	-	-	-
	Kt		0.45	0.44	0.47	0.53	0.53	0.5	0.49	-	-
Piezoelectric Strain Constant	D31	10^-¹²C/N	100	90	185	270	280	180	110	300	-
	D33		280	240	450	450	600	410	280	730	18
Piezoelectric Voltage Constant	g31	10^-³vm/N	12	10.1	10	10.6	10.6	-	-	-	-
	g33		24	22.6	24	19	18	25	37	16.8	15.2
Velocity of Sound	V0	Hz.m	3500	3500	2950	3000	3000	-	-	-	-
	V1		3350	3400	2900	2900	2900	-	-	-	-
	V3		3950	3900	3600	3600	3600	-	-	-	-
	Vt		4500	4550	3930	3850	3900	-	-	-	-
Elastic Compliance Coefficient	S^E11	10^-¹²m²/N	10.6	11.1	13.5	18	19	16.3	14.8	14.8	-
Poisson Ratio	σ		0.3	0.3	36	0.36	0.36	-	-	-	0.24
Mechanical And Electrical Quality Factor	Qm		800	800	70	70	65	85	85	50	-
Density	ρ	10³kg/m³	7.5	7.5	7.6	7.6	7.6	7.6	7.5	7.5	7.4
The Curie Temperature	Tc	ºC	310	320	310	310	260	320	328	204	525

Piezoelectric ceramic components are made of lead zirconate titanate (PZT) as the core material and polycrystalline piezoelectrics through ceramic powder sintering process, which are polarized to provide electromechanical coupling characteristics. The structure of the components covers single-layer sheets (thickness 0.1-1mm), multi-layer stacks (2-100 layers) and composite cantilever beams, etc. The surface is plated with nickel/gold electrodes to ensure electrical conductivity, and the exterior is encapsulated with epoxy resin or protected by a metal shell to meet the requirements of different protection levels, such as IP67.
The use of positive piezoelectric effect (mechanical stress → electrical signal) and reverse piezoelectric effect (electrical signal → mechanical deformation) to achieve energy conversion. For example, in ultrasonic applications, the electrical signal drives the piezoelectric ceramics to generate high-frequency vibration (20kHz-15MHz) to emit sound waves, and conversely receives the echo through the positive piezoelectric effect into an electrical signal to complete the distance measurement or imaging function.   

Main Product

Company Profile

Shouguang Feitian Electronics Co., Ltd. is a high-tech enterprise specializing in design,research and development and production of piezoelectric ceramics. The company boasts about its experienced research and development team and works all year round with a number of well-known experts in the piezcelectric ceramic industry. It has established cooperative relations with Shandong University, Tsinghua University, Chinese Academy of Sciences, Shanghai institute of Ceramics and so forth. Relying on the advanced technology and production process, Feitian has been developing and producing a series of piezoelectric ceramics of excellent performance and stable quality. It's products are widely used in ultrasonic cleaning, welding, detection, medical B-scan, beauty instruments, underwater acoustic field, micro drive ,ultrasonic flowmeter and many other fields. The company was honored as a National High-tech Enterprise and also as an Enterprise of Specialization Refinement, Differentiation, and innovation. Having won the recognition of lSO9001 quality management system, it has been dedicated to providing excellent products and service to domestic and foreign users, adhering to the "quality foremost and customer first" principle.

Our Services

Our Advantages

Partner

 

Certifications

FAQ

Q1: Are you a manufacturing company or a trading company?
A1: We have been concentrating on the manufacturing of piezoelectric ceramic-related products for 18 years.

Q2: Where is your factory located?
A2: Factory address: No. 4 Building, High-tech Industrial Park, Shouguang City, High-tech Zone, Shandong Province

Q3: What is the minimum order quantity of your company?
A3: Small batch orders are also acceptable.

Q4: What payment methods do you offer?
A4: Telegraphic transfer, Western Union remittance, PayPal, etc.

Q5: Can you send us a sample for us to test?
A5: Yes, regular samples are provided free of charge. If the sample cost is very high, the fee will be refunded to you when you place an order.

Q6: Delivery time?
A6: Generally, the goods will be dispatched within 7 days based on the order quantity.

Q7: How do you control product quality?
A7: All products will undergo strict quality inspection before packaging.