CS31-32.768K-9-TR

Crystals Overview

The CS31-32.768K-9-TR is a surface-mount ceramic crystal oscillator manufactured by Transko Electronics, Inc., designed for precision timing applications. It operates at a nominal frequency of 32.768 kHz with a normal temperature frequency tolerance of ±20 ppm. The component features a load capacitance of 9 pF and an equivalent series resistance (ESR) of 80 kOhms. It is housed in a compact SMD3215-2P package, measuring approximately 3.2 mm by 1.5 mm with a maximum standing height of 0.80 mm. The device supports an operating temperature range from -40°C to +85°C, ensuring reliable performance across industrial environments.

Crystals Feature Summary

• Utilizes ceramic resonator technology for stable frequency generation
• Designed for low-power consumption in portable electronic devices
• Offers high reliability within extended industrial temperature ranges

Crystals Applications

• Real-time clock circuits in microcontroller systems
• Wristwatches and wearable timekeeping devices
• Portable consumer electronics requiring precise timing references

Crystals Procurement Notes

Verify the specific load capacitance requirement of your circuit design against the 9 pF specification of this component. Ensure that the PCB footprint matches the SMD3215-2P package dimensions to guarantee proper soldering and mechanical stability. Confirm that the operating environment falls within the specified -40°C to +85°C range to maintain the stated ±20 ppm frequency tolerance. Cross-reference the manufacturer's latest datasheet for any updates on material composition or compliance standards before finalizing procurement.

Crystals Selection Notes

Select this component when a cost-effective, small-footprint timing solution is required for 32.768 kHz applications. The 9 pF load capacitance makes it suitable for circuits with lower capacitive loads compared to standard 12.5 pF variants. Consider the 80 kOhm ESR value when designing oscillator circuits to ensure adequate loop gain. This part is appropriate for designs where space constraints are critical but moderate frequency stability is acceptable.

Crystals Part Context

This crystal belongs to Transko's CS31 series of surface-mount ceramic resonators. The series is characterized by its compact size and suitability for mass production in consumer electronics. The suffix 'TR' indicates tape-and-reel packaging for automated assembly. Similar parts in the lineup may vary in load capacitance or frequency tolerance, necessitating careful model verification.

Crystals Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model.