E3WSDC12-32.768K TR

Crystals Overview

The E3WSDC12-32.768K TR is a 32.768 kHz surface-mount tuning fork crystal resonator in a 2012 (1.2mm x 2.0mm x 0.6mm) package. It features a default frequency tolerance of ±20ppm at 25°C and a load capacitance of 12.5pF. The equivalent series resistance (ESR) is typically 80kΩ to 90kΩ, with a maximum drive level of 0.5μW. Operating temperature ranges from -40°C to +85°C, supporting low-power RTC applications.

Crystals Feature Summary

• Miniature two-pad surface mount design for space-constrained PCB layouts
• RoHS compliant and lead-free construction for environmental standards
• Optimized low ESR characteristics to facilitate oscillator startup in weak drive circuits

Crystals Applications

• Real-time clock (RTC) sources for wearable devices
• Timekeeping modules in TWS earbuds
• Battery-powered sensor nodes requiring minimal footprint

Crystals Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging if bulk handling is required. Confirm that the 12.5pF load capacitance matches the target microcontroller's internal or external capacitor configuration to avoid additional component costs. Ensure the operating temperature range meets the final product's environmental specifications.

Crystals Selection Notes

Select this component when board space is limited to the 2012 form factor. The 12.5pF load capacitance is suitable for systems like Nordic nRF52832 without external matching capacitors. Consider the ±20ppm tolerance sufficient for consumer-grade timing; upgrade to tighter tolerances only if industrial accuracy is mandated.

Crystals Part Context

This part belongs to the E3WS series of miniature watch crystals manufactured by Ecliptek. It serves as a direct replacement for larger traditional packages like 3215, offering nearly half the volume while maintaining standard 32.768kHz functionality for low-frequency timing applications.

Crystals Replacement Considerations

Direct substitutes include other 2012 SMD tuning fork crystals with identical 12.5pF load capacitance and ±20ppm tolerance. Verify ESR compatibility to ensure oscillator circuit stability during cross-brand substitution.