Crystal resonator MC306 — 10 pieces, 32.768 kHz Key benefits Precise time base: Provides a stable 32.768 kHz frequency ideal for real-time clocks and low-frequency timing functions. Ready for PCB integration: Four-pin package supports secure mounting and straightforward connection to standard RTC circuits and microcontroller layouts. Bulk supply: Pack of 10 crystals reduces procurement time and simplifies assembly for prototypes or small production runs. Specifications Quantity: 10 pieces Frequency: 32.768 kHz (value: 32768) Capacitance: 12.5 pF Pins: 4-pin package Model: MC306 Dimensions: 3.8 x 8 x 2.5 mm Function and performance Designed to serve as a low-frequency reference oscillator for timekeeping and timing applications. The 32.768 kHz frequency is the standard for most real-time clock modules and low-power timing circuits, enabling seconds/minutes/hours counting with minimal power draw. Compatibility Compatible with RTC modules, microcontrollers, and other timing circuits that accept a 32.768 kHz crystal and a 12.5 pF load capacitance. Four-pin format accommodates typical PCB footprints used for through-hole or surface-mounted crystal modules (verify footprint dimensions before layout). Typical applications Real-time clocks (RTC) for microcontrollers and single-board computers to maintain accurate time during standby or low-power modes. Wearables, battery-powered devices, and IoT sensors that require a low-frequency, low-power clock source. Consumer electronics and embedded systems needing a reliable seconds/minute time reference (alarm clocks, timers, data loggers). Practical notes Verify the required load capacitance and oscillator circuit configuration in your design to ensure optimal frequency accuracy. Confirm footprint and pin orientation for your PCB layout against the MC306 dimensions (3.8 x 8 x 2.5 mm). What this product delivers A reliable set of ten MC306 crystals supplying the standard 32.768 kHz timekeeping frequency with 12.5 pF capacitance and a four-pin package suitable for common timing and RTC applications.