ECS-.327-12.5-49-TR

Crystals Overview

The ECS-.327-12.5-49-TR is a quartz crystal from the ECX-49 series manufactured by ECS Inc. 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 70 kOhms. It utilizes a tuning fork resonator design housed in a compact 2-SMD, No Lead package measuring 4.10 mm x 1.50 mm. The device is rated for operation within a temperature range of -40°C to +85°C.

Crystals Feature Summary

• Ultra-miniature surface-mount tuning fork design for space-constrained applications
• High stability timing source optimized for real-time clock circuits
• Wide operating temperature range suitable for industrial environments

Crystals Applications

• Real-time clock (RTC) modules in consumer electronics
• Wearable devices requiring low-power timing references
• IoT sensors and embedded systems needing precise timekeeping

Crystals Procurement Notes

Verify the specific suffix '49' corresponds to the required package code and pin configuration for your PCB layout. Confirm that the 12.5 pF load capacitance matches the oscillator circuit requirements on the target motherboard. Ensure the ±20 ppm tolerance meets the long-term accuracy needs of the application. Check for RoHS compliance status if environmental regulations apply to the final product assembly.

Crystals Selection Notes

Select this component when a small form factor is critical for the design. The 32.768 kHz frequency is standard for binary division in timekeeping applications. Consider the 70 kOhm ESR limit to ensure reliable oscillation start-up in the host circuit. This part is suitable for designs where moderate frequency stability is acceptable compared to higher-grade TCXOs.

Crystals Part Context

This crystal belongs to the ECX-49 series, which represents ECS Inc.'s ultra-miniature tuning fork line. These components are designed to replace larger through-hole crystals in modern portable electronics. The series focuses on reducing board space while maintaining reliable performance for low-frequency timing tasks common in battery-powered devices.

Crystals Replacement Considerations

Direct substitutes must match the 32.768 kHz frequency, 12.5 pF load capacitance, and 4.1mm x 1.5mm footprint. Verify that alternative manufacturers offer comparable ESR values near 70 kOhms to prevent start-up failures. Cross-reference package codes to ensure identical terminal configurations for direct soldering compatibility.