ECS-CTA-4.91-TR

Resonators Overview

The ECS-CTA-4.91-TR is a surface-mount ceramic resonator manufactured by ECS Inc., designed for clock generation applications. It operates at a nominal frequency of 4.91 MHz with a tight tolerance of ±0.2%. The component features an internal impedance of 30 Ohms and does not include external capacitors, simplifying circuit design. It is rated for operation within a temperature range of -25°C to +85°C. The device utilizes a compact SMD package measuring 6.0 x 3.0 mm and is supplied in tape-and-reel format for automated assembly processes.

Resonators Feature Summary

• Surface mount ceramic resonator technology
• Integrated design without external capacitors
• High frequency stability with ±0.2% tolerance
• Compact footprint suitable for space-constrained PCB layouts

Resonators Applications

• Microcontroller clock sources
• Digital signal processing timing circuits
• Communication interface synchronization

Resonators Procurement Notes

Verify the specific ordering suffix matches the required frequency and tolerance specifications. Confirm that the tape-and-reel packaging aligns with your pick-and-place equipment capabilities. Ensure the operating temperature range meets the environmental requirements of the final product. Cross-reference the datasheet for soldering profile recommendations to prevent thermal damage during reflow.

Resonators Selection Notes

Choose this component when a cost-effective alternative to quartz crystals is needed with moderate stability requirements. The integrated capacitor design reduces bill-of-materials complexity. Consider the 30 Ohm impedance for driver strength matching. Verify that the 4.91 MHz frequency is compatible with the target system's clock input requirements and harmonic filtering needs.

Resonators Part Context

This part belongs to the ECS-CTA series of surface-mount ceramic resonators from ECS Inc. The series offers various frequencies optimized for common microcontroller and logic circuit applications. The CTA designation indicates a standard ceramic resonator configuration without built-in capacitors, distinguishing it from other variants in the manufacturer's portfolio.

Resonators Replacement Considerations

Direct substitutes must match the 4.91 MHz frequency, ±0.2% tolerance, 30 Ohm impedance, and 6.0 x 3.0 mm package dimensions. Verify equivalent temperature ratings and mounting compatibility. Consult manufacturer cross-reference lists for approved alternatives.