32.768K12.5PI/MC306

Crystals Overview

The YIC 32.768K12.5PI/MC306 is a surface-mount quartz crystal resonator designed for precision timing applications. It operates at a fundamental frequency of 32.768 kHz, utilizing a tuning fork configuration typical for real-time clock circuits. The component features a load capacitance of 12.5 pF and a maximum series resistance of 50 kOhms. Frequency stability is specified at ±20 ppm over the operating temperature range of -40°C to +85°C. Aging performance is rated at ±3 ppm per year. The device is housed in a compact 4-SOJ package with a 5.50 mm pitch, measuring 8 x 3.8 x 2.5 mm.

Crystals Feature Summary

• Surface-mount tuning fork quartz resonator optimized for low-power timing circuits
• High frequency stability with ±20 ppm tolerance across industrial temperature ranges
• Low aging rate of ±3 ppm/year ensures long-term timekeeping accuracy
• Compact SOJ-4 package design suitable for space-constrained PCB layouts

Crystals Applications

• Real-time clock (RTC) modules in consumer electronics
• Microcontroller system oscillators requiring precise timebase
• Portable devices and battery-operated instruments
• Industrial control systems needing reliable low-frequency timing

Crystals Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct load capacitance and tolerance specifications. Confirm that the package dimensions match the required footprint on the target PCB layout. Check for any recent revisions to the datasheet that may affect electrical parameters or recommended soldering profiles. Ensure compatibility with the host circuit's equivalent series resistance requirements.

Crystals Selection Notes

Select this component when a stable 32.768 kHz reference is required for digital timekeeping functions. The 12.5 pF load capacitance must match the oscillator circuit design to achieve the specified frequency accuracy. Consider the operating temperature range if the application involves extreme environmental conditions. The high impedance characteristic makes it suitable for CMOS oscillator interfaces commonly found in modern microcontrollers.

Crystals Part Context

This part belongs to the MC306 series of quartz crystals manufactured by YIC International Co., Limited. These components are widely used as standard timekeeping elements in embedded systems. The 32.768 kHz frequency is chosen because it divides evenly into one second using binary counters, simplifying digital clock design. The SOJ-4 form factor represents a common industry standard for surface-mount tuning fork crystals.

Crystals Replacement Considerations

Substitute parts must maintain identical frequency, load capacitance, and package dimensions. Verify that alternative suppliers offer comparable aging rates and temperature stability. Ensure the replacement component supports the same fundamental operating mode and series resistance limits.