F5X-32768-070-D90-R-N

Crystals Overview

The F5X-32768-070-D90-R-N is a surface-mount tuning fork crystal 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 90 kOhms and a load capacitance of 7 pF. It utilizes a 4-SMD, no-lead package with dimensions of 1.2 x 1.0 x 0.35 mm. The device supports a standard operating temperature range of -40°C to +85°C and employs metal diffusion sealing for enhanced environmental stability.

Crystals Feature Summary

• Utilizes quartz crystal material for the package shell to reduce weight and improve thermal matching compared to ceramic alternatives.
• Employs metal diffusion sealing technology to provide superior hermeticity and humidity resistance over traditional adhesive sealing methods.
• Designed for fundamental mode operation with low drive level requirements suitable for power-constrained applications.

Crystals Applications

• Real-time clock circuits in wearable electronics
• Timekeeping modules in TWS earbuds
• Low-power sensor nodes in automotive infotainment systems

Crystals Procurement Notes

Verify the specific suffix configuration against the manufacturer's official datasheet to ensure compatibility with required load capacitance and sealing standards. Confirm that the ordering part number matches the exact electrical specifications needed for the target circuit design before finalizing procurement orders.

Crystals Selection Notes

Select this component when space constraints require a 1210 footprint for a 32.768 kHz oscillator. Ensure the host circuit accommodates the 90 kOhm ESR and 7 pF load capacitance. Consider the extended temperature variant if operation beyond 85°C is required for the specific application environment.

Crystals Part Context

This model belongs to the F5X series of ultra-small tuning fork crystals from River Eletec. It is engineered specifically for miniaturized consumer electronics where standard 1610 packages are too large. The series emphasizes mechanical robustness and long-term frequency stability through advanced sealing techniques.

Crystals Replacement Considerations

Direct substitutes include other 1210-sized 32.768 kHz crystals with matching 7 pF load capacitance and similar ESR limits. Verify pinout compatibility and thermal characteristics when cross-referencing with alternative manufacturers' offerings.