CFMH4-21.400-F7.6IL04AK

Overview

The CFMH4-21.400-F7.6IL04AK is a center monolithic crystal filter manufactured by Suzhou Hangjing Elec&Tech Co.,Ltd. It operates at a center frequency of 21.4 MHz and features a 3-dB bandwidth of 7.6 kHz. The component exhibits an insertion loss of 4 dB and utilizes a through-hole mounting configuration for circuit integration.

Feature Summary

• Monolithic crystal construction for stable filtering performance
• Through-hole package design for standard PCB assembly

Applications

• Intermediate frequency (IF) stages in radio receivers
• Signal processing circuits requiring narrowband filtering
• Communication equipment channel selection

Procurement Notes

Verify the complete part number including suffixes against official manufacturer documentation to ensure correct specifications. Confirm that the required center frequency, bandwidth, and insertion loss parameters match the application requirements before procurement. Ensure compatibility with through-hole assembly processes.

Selection Notes

Select this component when a fixed center frequency of 21.4 MHz with a 7.6 kHz bandwidth is required. Consider the 4 dB insertion loss impact on signal strength. Verify mechanical fit for through-hole mounting and ensure the operating temperature range meets system specifications.

Part Context

This component belongs to the CFMH4 series of center monolithic crystal filters produced by Suzhou Hangjing Elec&Tech Co.,Ltd. The company specializes in quartz frequency control units, including crystals, oscillators, and filters. This specific model represents a passive filtering solution within their broader portfolio of frequency control components.

Replacement Considerations

Consult official manufacturer substitution lists for verified equivalents. Generic replacements may not match the precise 7.6 kHz bandwidth or 4 dB insertion loss characteristics. Verify pinout and mechanical dimensions if considering alternative packages.