Yangxing X322512MSB4SI 12MHz Precision Quartz Crystal (12pF, ±20ppm, 3.2x2.5mm SMD)

Provide a clean, highly accurate master clock signal for your digital electronics with the X322512MSB4SI surface-mount quartz crystal resonator from Yangxing (YSX321SL series). Operating at a fundamental frequency of 12.000 MHz, this crystal is a foundational clock source widely used across USB interface controllers, microcontrollers, wireless communication modules, and digital signal processors.

Housed in a compact, industry-standard 3.2 x 2.5 mm 4-pin hermetically sealed metal package, it offers exceptional environmental protection and electromagnetic shielding. Featuring a tight frequency tolerance of $\pm20\text{ ppm}$ and a standard 12pF load capacitance ($C_L$), it ensures fast oscillator startup and excellent frequency stability across temperature variations. It is an ideal choice for custom Arduino/ATmega boards, STM32 systems, USB-to-UART bridges (CH340/CP2102), and compact IoT hardware.

Key Features:

• 12.000 MHz Core Frequency: Standard frequency widely used for USB PHY timing, microcontrollers, and system clock generation.

• High Precision ($\pm20\text{ ppm}$): Tight frequency tolerance ensures accurate clocking for communication interfaces and timing-critical logic.

• Sealed 3225 Metal Package: 4-pin 3.2 x 2.5 mm surface-mount footprint provides robust shielding and long-term frequency stability.

• 12pF Load Capacitance: Fully compatible with standard external load capacitors ($C_1/C_2$) in Pierce oscillator circuits.

Specifications:

• Part Number: X322512MSB4SI

• Manufacturer: Yangxing (YSX321SL)

• Component Type: Quartz Crystal Resonator

• Nominal Frequency: 12.000 MHz

• Frequency Tolerance: $\pm20\text{ ppm}$

• Load Capacitance ($C_L$): 12 pF

• Package Dimensions: 3.2 x 2.5 mm (SMD 3225, 4-Pin)