ECS-300-18-33Q-DS

Crystals Overview

The ECS-300-18-33Q-DS is a surface-mount crystal resonator from the ECX-33Q series, manufactured by ECS Inc. International. It operates at a fundamental frequency of 30 MHz with a frequency tolerance of ±30 ppm and a stability of ±100 ppm. The component features an equivalent series resistance (ESR) of 30 Ohms and a load capacitance of 18 pF. It is housed in a compact 4-SMD, no-lead package measuring 3.20mm x 2.50mm. This device is qualified to AEC-Q200 standards, indicating suitability for automotive electronic applications requiring high reliability and robust performance under varying environmental conditions.

Crystals Feature Summary

• AEC-Q200 qualified for automotive grade reliability
• Compact 3.2mm x 2.5mm surface-mount footprint
• High stability with ±100 ppm total frequency tolerance

Crystals Applications

• Automotive infotainment systems
• Engine control units (ECU)
• Telematics modules
• On-board diagnostics (OBD) interfaces

Crystals Procurement Notes

Verify the specific suffix 'DS' against the manufacturer's current datasheet to confirm packaging configuration and reel specifications. Ensure that the AEC-Q200 qualification status aligns with your system's automotive reliability requirements. Cross-reference the 30 MHz frequency and 18 pF load capacitance with your circuit design schematic to guarantee proper oscillator loading conditions.

Crystals Selection Notes

Select this component when a small form factor is required alongside automotive-grade durability. The 30 MHz frequency suits clocking needs for microcontrollers or communication interfaces in vehicle electronics. Consider the 30 Ohm ESR for oscillator circuit compatibility. The 18 pF load capacitance must match the external capacitors used in the design to achieve the specified frequency accuracy.

Crystals Part Context

This part belongs to the ECX-33Q series of ultra-small crystals designed for space-constrained automotive applications. The series provides a balance between miniaturization and performance, offering stable frequency generation in harsh environments. The 'Q' suffix typically denotes AEC-Q200 compliance, distinguishing it from standard commercial-grade counterparts within the broader ECS crystal portfolio.

Crystals Replacement Considerations

Direct substitutes include other AEC-Q200 qualified 30 MHz crystals in 3.2x2.5mm packages, such as those from Murata or Abracon. Verify that any replacement matches the 18 pF load capacitance and ≤30 Ohm ESR to ensure oscillator startup and stability. Check mechanical dimensions and solderability specifications for compatibility with existing PCB footprints.