ECS-96SMF21A20

Overview

The ECS-96SMF21A20 is a monolithic crystal bandpass filter manufactured by ECS Inc. It operates at a center frequency of 21.4 MHz with a bandwidth of 20 kHz. The device features a two-pole design and an insertion loss of 2 dB. Its nominal impedance is 1.8 kOhms, and it utilizes a surface-mount ceramic package measuring 7.00 mm in length, 5.00 mm in width, and 1.35 mm in height.

Feature Summary

• Monolithic crystal construction for stable signal filtering
• Surface-mount ceramic package for automated assembly
• Two-pole bandpass response characteristics

Applications

• RF signal conditioning circuits
• Intermediate frequency (IF) filtering in communication systems
• Frequency selection in receiver front-ends

Procurement Notes

Verify the specific datasheet version from ECS Inc. International to confirm mechanical dimensions and electrical tolerances. Ensure compatibility with standard SMD reflow profiles. Confirm that the 21.4 MHz center frequency aligns with system requirements before procurement.

Selection Notes

Select this component when a narrow 20 kHz bandwidth is required at 21.4 MHz. The 1.8 kOhm impedance matches specific circuit designs. Consider the 7x5x1.35mm footprint for PCB layout constraints. Verify insertion loss specifications against system sensitivity needs.

Part Context

This part belongs to the ECS monolithic crystal filter series designed for surface-mount applications. These filters are engineered for high stability and compact size, suitable for modern electronic devices requiring precise frequency control in small form factors.

Replacement Considerations

Check for direct substitutes with identical 21.4 MHz center frequency and 20 kHz bandwidth. Ensure replacement parts match the 7x5x1.35mm package and 1.8 kOhm impedance. Verify pole count and insertion loss specifications for functional equivalence.