CS31-32.768K-12.5-TR

Crystals Overview

The CS31-32.768K-12.5-TR is a tuning fork crystal oscillator manufactured by Transko Electronics, Inc., designed for precision timing applications. It operates at a nominal frequency of 32.768 kHz with a frequency tolerance of ±20 ppm. The component features a load capacitance of 12.5 pF and an equivalent series resistance (ESR) of 80 kOhms. It is housed in a compact 2-SMD, No Lead package, suitable for surface-mount assembly. The device is supplied in Tape & Reel packaging to facilitate automated manufacturing processes.

Crystals Feature Summary

• Utilizes tuning fork crystal technology for stable low-frequency operation
• Designed for surface-mount integration via 2-SMD no lead configuration
• Optimized for low power consumption typical of watch-grade crystals

Crystals Applications

• Real-time clock circuits in consumer electronics
• Wearable devices requiring precise timekeeping
• Portable battery-powered instrumentation

Crystals Procurement Notes

Verify the specific suffix -TR confirms tape and reel packaging requirements against your assembly line specifications. Ensure the load capacitance matches the host circuit design to maintain the specified ±20 ppm accuracy. Confirm the active status with the manufacturer prior to finalizing procurement orders to avoid obsolescence risks.

Crystals Selection Notes

Select this component when a standard 32.768 kHz reference is required for low-power embedded systems. The 12.5 pF load capacitance must align with the microcontroller or RTC input requirements. Consider the 80 kOhm ESR limit to ensure reliable oscillation startup within the target application environment.

Crystals Part Context

This part belongs to the CS31 series of crystals from Transko Electronics, Inc. The series focuses on small-form-factor components for portable applications. The -TR suffix indicates bulk tape and reel delivery, distinguishing it from cut-tape or loose piece variants within the same electrical specification family.

Crystals Replacement Considerations

Public documentation identifies the CS63B as a drop-in replacement for discontinued Citizen Finetech CS10 models, but no direct substitute for this specific Transko part number is explicitly confirmed in available sources.