This Product Selection Guide contains information to help select products in the Buzzer Elements, Piezo Benders category on DigiKey.com
Buzzer element products, also known as “benders,” are composed of two conductive electrodes sandwiching a piezoelectric material, which exhibits a mechanical deflection when subject to an electric field; or conversely produces an electrical signal when subject to mechanical strain. Products of this type are primarily used to form compact audio signaling devices, often by attachment to the wall of a device’s enclosure, which aids transmission of the vibrations produced by applying an electrical signal to the buzzer element into the surrounding air.
SelectionCharacteristics
Frequency: The frequency the device is designed to operate at
Voltage - Input (Max): Typically represented by a range, this indicates the low and high voltage limits which one can expect standard operation. Voltages outside this range may damage the device and other system components.
Type: The type of device being offered.
Impedance: The device’s impedance value.
Capacitance @ Frequency: Characterizes the amount of capacitance between the device terminals, measured at the test frequency indicated.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Size / Dimension: The physical dimensions of the device, typically given as Diameter in Inches (Millimeters)
Termination: The style of the terminations used to connect the device to the system, such as Solder Pads or Wire Leads.
ProductExamples
| MFR PART # | AB1541B-LW100-R |
|---|---|
| DIGIKEY PART # | 668-1448-ND |
| MANUFACTURER | PUI Audio, Inc. |
| DESCRIPTION | 4.1 kHz Standard Buzzer Element 30V p-p 0.591" Dia (15.00mm) 1 kOhms |
| DATASHEET | Click Here |
| MFR PART # | CT47Z-30W320-1 |
|---|---|
| DIGIKEY PART # | 2603-CT47Z-30W320-1-ND |
| MANUFACTURER | Challenge Electronics |
| DESCRIPTION | 3.2 kHz Standard Buzzer Element 30V p-p 1.878" (47.70mm) 100 Ohms |
| DATASHEET | Click Here |
| MFR PART # | CPT-3529-L100 |
|---|---|
| DIGIKEY PART # | 102-CPT-3529-L100-ND |
| MANUFACTURER | CUI Devices |
| DESCRIPTION | 2.9 kHz Feedback Buzzer Element 30V p-p 1.378" Dia (35.00mm) 500 Ohms |
| DATASHEET | Click Here |
| MFR PART # | P08080-1 |
|---|---|
| DIGIKEY PART # | 2104-P08080-1-ND |
| MANUFACTURER | DB Unlimited |
| DESCRIPTION | 8 kHz Standard Buzzer Element 15V p-p 0.350" Dia (8.90mm) |
| DATASHEET | Click Here |
SchematicSymbol
Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.
MediaLinks
Videos
Understanding Audio Frequency Range in Audio Design
Articles
Increasing the Output of a Piezo Transducer Buzzer
A Look at Audio Frequency Range and Audio Components
Blogs
Have Some Fun with a Piezo Buzzer & Circuit Python