CPT-2207-84T
Overview
The CPT-2207-84T is a through-hole piezo buzzer transducer designed for audible signaling in electronic systems. As an externally driven component, it requires an oscillator or PWM signal from a microcontroller to produce sound, offering flexibility in frequency and tone control. It features a resonant frequency of 4kHz and provides a sound pressure level of 84dB at a 10cm distance when driven at its 10V rated voltage.
Why Choose This Part
The wide 1V to 30V operating range allows for easy integration into both low-power battery devices and 24V industrial systems. Its piezo technology ensures low current consumption of approximately 6mA at 10V, making it more efficient than magnetic buzzers. The compact 22mm diameter through-hole package with PC pins provides a secure mechanical connection for high-vibration environments.
Applications
Key Specifications
Getting Started
To drive this transducer, connect one pin to a microcontroller PWM output and the other to ground, ensuring the PWM frequency is set near the 4kHz resonant peak for maximum volume. Use a simple NPN transistor or MOSFET switching circuit if the driving voltage exceeds the MCU I/O rating. Because this is a transducer without internal circuitry, a square wave or AC signal is required to produce sound.
