E1WSDA12-32.768K TR

Crystals Overview

The E1WSDA12-32.768K TR is a surface-mount watch crystal resonator from the Ecliptek E1WS series, operating at a nominal frequency of 32.768 kHz in fundamental mode. It features a frequency tolerance of ±20 ppm at 25°C and an equivalent series resistance (ESR) of ≤50 kΩ. The device supports load capacitances of 6 pF or 12.5 pF and operates within a temperature range of -40°C to +85°C. Packaged in a 4-pin SMD plastic housing measuring 3.7 mm x 7.9 mm x 2.5 mm, it utilizes tape and reel packaging compliant with EIA-481 standards.

Crystals Feature Summary

• Fundamental mode operation for standard real-time clock applications
• RoHS 2011/65 + 2015/863 compliant lead-free manufacturing process
• REACH SVHC compliance eliminates additional material testing requirements
• Low driving level capability suitable for battery-powered devices

Crystals Applications

• Real-time clock circuits in industrial sensors
• Battery-powered wearable electronics
• Low-power microcontroller systems requiring precise timing
• Outdoor environmental monitoring equipment

Crystals Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS and REACH compliance documentation matches current regulatory updates. Ensure storage conditions respect MSL1 classification limits to prevent moisture-induced damage during soldering processes.

Crystals Selection Notes

Select this component when PCB space constraints require a compact 4-pin SMD footprint. Choose based on required load capacitance matching the host MCU's RTC interface specifications. Consider the ±20 ppm stability sufficient for non-critical timing applications where annual drift remains within acceptable operational margins.

Crystals Part Context

This part belongs to the E1WS series of surface-mount watch crystals designed for low-cost, high-volume consumer and industrial electronics. The series emphasizes miniaturization while maintaining standard 32.768 kHz frequencies essential for timekeeping functions across various embedded system architectures.

Crystals Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical parameters before considering alternative manufacturers.