Product - Pack of 10 passive SMD quartz resonator crystals, model 3225 (4‑pin), footprint 3.2 x 2.5 mm. - Frequencies included: 48.000 MHz, 11.0592 MHz, 12.288 MHz, 12.800 MHz, 13.560 MHz, 14.318 MHz, 18.432 MHz, 19.200 MHz, 22.1184 MHz. - Color marking identifies the 3225 13.56 MHz variant in the pack. Key benefits - Compact, board‑mountable timing source: the 3225 3.2 x 2.5 mm SMD package saves PCB space and is compatible with automated reflow assembly. - Multiple frequency options in one pack: simplifies prototyping and small production runs by providing commonly used resonant frequencies. - Reliable passive frequency reference: quartz material provides a stable oscillation source for clocking and RF functions without additional active components. - Easy identification: the 13.56 MHz pieces in this pack carry a specific color marking for quick selection during assembly. Function and compatibility - Function: passive quartz resonator crystals that provide a precise resonant frequency for oscillators and timing circuits. - Compatibility: designed for surface‑mount PCB designs that require a 4‑pin 3225 resonator footprint. Suitable for microcontroller clocking, RF/NFC front ends, communication modules and other digital timing applications where these frequencies are required. Physical and performance attributes - Package: SMD 3225 (3.2 x 2.5 mm), 4‑pin mounting. - Material: quartz crystal resonator (passive component). - Quantity: 10 pieces per pack. - Performance: provides a stable resonant frequency appropriate for oscillator circuits; intended for use where the listed nominal frequencies are needed. Typical applications - NFC/RFID reader modules: use the 13.56 MHz resonators for NFC/RFID front‑end timing and carrier generation. - Microcontroller and serial communications: use 11.0592 MHz, 22.1184 MHz or 19.2 MHz for UART baud‑rate and timing accuracy in embedded systems. - RF and digital prototypes: use 48 MHz, 12.288 MHz, 14.318 MHz or 18.432 MHz for clocking, radio intermediate stages or audio sampling systems. What you get - Ten 3225 4‑pin SMD quartz resonator crystals in the specified frequencies, with the 13.56 MHz units color marked for identification. Use them for board‑level oscillator and timing requirements where compact size and standard resonant frequencies are required.