F5X-32768-090-D90-R-N

Crystals Overview

The F5X-32768-090-D90-R-N is a surface-mount quartz crystal resonator manufactured by River Eletec Corporation. It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 ppm at 25°C. The component features an equivalent series resistance (ESR) of maximum 90 kΩ and a load capacitance of 9.0 pF. It utilizes a 4-SMD, no-lead package configuration with dimensions of 1.2 x 1.0 mm and a maximum seated height of 0.35 mm. The device is designed for low-power applications, supporting a drive level of up to 0.5 μW. Standard operating temperature range is -40°C to +85°C.

Crystals Feature Summary

• Utilizes a compact 1210 footprint size suitable for space-constrained designs
• Employs metal diffusion sealing technology for enhanced hermeticity
• Constructed with a quartz crystal body to minimize weight and improve thermal stability

Crystals Applications

• Real-time clock circuits in wearable electronics
• Low-power embedded systems requiring precise timing
• TWS earphone power management modules

Crystals Procurement Notes

Verify the specific load capacitance requirement of 9.0 pF against the host oscillator circuit design to ensure frequency accuracy. Confirm that the maximum ESR of 90 kΩ aligns with the oscillator's startup conditions. Ensure the SMD package dimensions fit within the designated PCB land pattern without interference from adjacent components or enclosure constraints.

Crystals Selection Notes

Select this component when minimal physical volume is critical for RTC applications. The high ESR value indicates suitability for low-drive-level oscillators typical in battery-powered devices. Consider the standard -40°C to +85°C temperature range; higher temperature variants may be required for automotive or industrial environments if supported by manufacturer certification.

Crystals Part Context

This part belongs to the F5X series of ultra-small quartz crystals. It represents a shift from traditional ceramic-packaged tuning forks to direct quartz packaging, offering reduced mass and improved mechanical robustness. The series targets the miniaturization trends in consumer electronics and IoT sensors where standard 1610 or larger packages are physically incompatible.

Crystals Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 9.0 pF load capacitance, and 1210 package dimensions. Verify ESR limits and drive level specifications to prevent oscillator failure. Cross-reference with other manufacturers' 1210 quartz offerings, ensuring identical pinout and sealing technology for reliable performance parity.