ECS-250-18-36B-CKY-TR

Crystals Overview

The ECS-250-18-36B-CKY-TR is a surface-mount quartz crystal resonator from the ECX-2236B series manufactured by ECS Inc. It operates at a fundamental frequency of 25 MHz with a load capacitance of 18 pF and an equivalent series resistance (ESR) of 50 Ohms. The component features a frequency tolerance of ±10 ppm and stability of ±10 ppm. It utilizes a ceramic package measuring 2.5 mm x 2.0 mm x 0.55 mm in a 4-SMD, no lead configuration. The device supports a frequency range of 12 MHz to 50 MHz and includes a shunt capacitance of 3 pF. It is designed for operation between -30°C and +85°C.

Crystals Feature Summary

• Miniature ceramic surface-mount package suitable for automated SMD manufacturing processes
• Fundamental mode operation providing precise timing signals for digital circuits
• Wide operating temperature range ensuring reliability in varied environmental conditions

Crystals Applications

• Computer systems requiring clock synchronization
• Mobile communication devices needing stable frequency references
• General-purpose electronic timing circuits

Crystals Procurement Notes

Verify the specific ordering suffix against official ECS documentation to confirm package dimensions and termination style. Ensure the load capacitance matches the circuit design requirements. Confirm the reel packaging specification if bulk procurement is intended. Cross-reference the part number with the manufacturer's current datasheet to validate availability and compliance status before finalizing purchase orders.

Crystals Selection Notes

Select this component when a 25 MHz fundamental frequency with ±10 ppm tolerance is required. The 18 pF load capacitance must align with the oscillator circuit design. Consider the 2.5 mm x 2.0 mm footprint for space-constrained PCB layouts. Evaluate the 50 Ohm ESR against the driving capability of the host microcontroller or oscillator IC. Verify thermal performance within the specified -30°C to +85°C range for the target application environment.

Crystals Part Context

This part belongs to the ECX-2236B series of surface-mount crystals from ECS Inc. The series offers various frequencies within the 12 MHz to 50 MHz range. These components are designed for high-volume production environments utilizing standard reflow soldering profiles. The ceramic construction provides mechanical stability and electrical isolation compared to other package types.

Crystals Replacement Considerations

Consult official ECS substitution guides for direct equivalents. Verify pin compatibility and electrical parameters such as ESR and load capacitance. Check dimensional tolerances to ensure fit within existing footprints.