F5X-32768-090-D90-R-W

Crystals Overview

The F5X-32768-090-D90-R-W is a surface-mount tuning fork crystal manufactured by River Eletec Corporation. It operates at a nominal frequency of 32.768 kHz with a load capacitance of 9.0 pF and an equivalent series resistance (ESR) maximum of 90 kOhms. The component features a compact 1210 package measuring 1.20mm x 1.00mm, designed for low-power applications. It supports a standard operating temperature range of -40°C to +85°C and utilizes metal diffusion sealing technology for improved environmental stability.

Crystals Feature Summary

• Utilizes quartz crystal casing instead of ceramic packaging to reduce weight and improve thermal expansion matching.
• Employs metal diffusion sealing (MDS) technology to enhance hermeticity and humidity resistance compared to traditional adhesive sealing.
• Optimized for ultra-low power consumption with a maximum drive level of 0.5 μW.

Crystals Applications

• Real-time clock (RTC) circuits in wearable devices
• Low-power consumer electronics requiring minimal footprint
• TWS earphone battery management systems

Crystals Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure compatibility with target load capacitance and sealing requirements. Confirm that the supplier provides traceable documentation for the metal diffusion sealing process if environmental robustness is critical. Ensure storage conditions align with moisture sensitivity levels specified in the manufacturer's handling guidelines.

Crystals Selection Notes

Select this component when space constraints necessitate a 1210 footprint for a 32.768 kHz reference. The high ESR value suits oscillator designs requiring lower drive levels. Consider the -40°C to +85°C rating for general consumer use; higher temperature ranges may require specific variant selection. Validate oscillator circuit parameters against the 9.0 pF load capacitance specification.

Crystals Part Context

This part belongs to the F5X series of miniature tuning fork crystals from River Eletec Corporation. The series is characterized by its small physical dimensions and specialized sealing methods. It serves as a direct alternative to larger ceramic-packaged crystals where size reduction and weight savings are primary design drivers.

Crystals Replacement Considerations

Direct substitutes include other 1210 package 32.768 kHz crystals with 9.0 pF load capacitance. Verify mechanical dimensions and pin compatibility before replacement. Alternative models within the same family may offer different temperature ranges or sealing technologies.