ECS-122.8-20-4X

Crystals Overview

The ECS-122.8-20-4X is a fundamental quartz crystal oscillator manufactured by ECS Inc., designed for surface-mount applications in electronic circuits. It operates at a nominal frequency of 12.288 MHz with a load capacitance of 20 pF. The component features a frequency tolerance of ±30 ppm and a stability of ±50 ppm. Key electrical parameters include an equivalent series resistance (ESR) of 60 Ω and a drive level of 100 µW. The package dimensions are 11.35 mm in length and 4.65 mm in width, utilizing a standard SMD footprint.

Crystals Feature Summary

• Fundamental mode quartz crystal construction
• Surface-mount design for automated assembly
• Glass-sealed ceramic package for environmental protection

Crystals Applications

• Microcontroller clock sources
• Communication interface timing
• Digital signal processing systems

Crystals Procurement Notes

Verify the specific suffix against the manufacturer's current datasheet to ensure compatibility with required tolerance and stability specifications. Confirm that the 20 pF load capacitance matches the target circuit design. Check for RoHS compliance status if restricted substances are a concern for the application. Ensure the tape and reel packaging format aligns with available pick-and-place equipment capabilities.

Crystals Selection Notes

Select this component when a precise 12.288 MHz reference is required for digital logic or communication protocols. The 20 pF load capacitance must be compatible with the oscillator circuit's input capacitance to maintain accuracy. Consider the ±30 ppm tolerance for initial calibration needs and the ±50 ppm stability for temperature-dependent performance requirements within the specified operating range.

Crystals Part Context

This part belongs to the HC-49USX series family of crystals from ECS Inc., which are widely used in consumer electronics and industrial control systems. The series offers a balance of cost-effectiveness and reliability for mass-produced devices requiring stable frequency generation without the complexity of active oscillators.

Crystals Replacement Considerations

Direct substitutes may include other manufacturers' 12.288 MHz crystals with identical 20 pF load capacitance and similar physical dimensions. Verify that alternative parts meet the same ±30 ppm tolerance and 60 Ω ESR specifications to ensure circuit functionality remains unchanged.