XtalTQ
https://www.xtaltq.com/products/size-3.2x2.5mm-ultra-compact-thin-and-light-weight-tuning-fork-quartz-crystal.html
Ultra Compact, Thin, and Light Weight Tuning Fork Quartz Crystal (3.2x2.5mm SMD)
The BC3225 is an ultra-compact, thin, and lightweight tuning fork quartz crystal designed for small mobile devices, consumer electronics, and communication devices. Its small size (3.2x2.5mm) and surface-mount device (SMD) packaging make it ideal for space-constrained applications.
Applications
Small Mobile Devices: Smartphones, tablets, and wearable technology.
Consumer Electronics: Digital cameras, gaming devices, and portable audio players.
Communication Devices: Wireless modules, GPS units, and IoT devices.
How Does a Quartz Crystal Work?
A quartz crystal operates based on its piezoelectric properties, which allow it to convert electrical energy into mechanical vibrations and vice versa. Here's a step-by-step explanation:
Electric Field Application: An alternating electric field is applied to the crystal via electrodes attached to its surface.
Mechanical Stress: The electric field induces mechanical stress, causing the crystal to vibrate at a specific, stable frequency.
Resonant Frequency: The frequency of these vibrations is determined by the crystal's physical dimensions and the cut of the quartz.
Oscillation Generation: The tuning fork crystal oscillator at its natural resonant frequency, generating precise and stable oscillations.