Explore Crystal Filters by Series

Premium narrow-band filtering solutions leveraging the exceptionally high Quality Factor (Q) of quartz material. Operating primarily at standard Intermediate Frequencies (IF), our MCF series provide maximum adjacent-channel attenuation and excellent intermodulation distortion (IMD) behavior.

Not sure where to start?

Three ways to match your needs, or quickly contact FCom’s engineering team.

By Standard IF Center Frequency

Align your receiver architecture directly with industry-standard IF blocks. Select from classic 10.7 MHz and 21.4 MHz series, up to higher 45 MHz or 90 MHz center frequency modules for multi-stage conversion systems.

10.7 MHz Series

21.4 MHz Series

45 MHz & Above

By Channel Spacing & Passband Width

Filter by transmission bandwidth rules. Choose ultra-narrow variations tailored for 12.5 kHz narrow-band radio channel spacing, or wider passband options designed for 25 kHz analog and digital mobile radio (PMR) platforms.

Narrow Band (12.5 kHz Spacing)

Wide Band (25 kHz Spacing)

By High-End Radiocommunication Application

Secure strict selection criteria for professional-grade field hardware. Implement robust filtering blocks designed for marine VHF transceivers, emergency services communication equipment, and high-tier military tactical radios.

Professional Mobile Radio

Marine & Avionic Comm

Series Parametric Table

Compare by package, frequency range, tolerance, temperature range, and more. Click any Series name to download its datasheet.

Series	Package	Type	Frequency-MHz	Bandwidth-dB	Bandwidth-kHz	Stop BandWidth-dB	Stop BandWidth-kHz	Stop BandWidth-dB	Stop BandWidth-kHz	Ripple-dB	Insertion-dB	Guaranteed Attenuation-dB	Terminating Impedance-kΩ//pF	No of Poles	Contact
FCF-9T FCF-9U	HC-49T HC-49U	10M7.5A	10.7	3	3.75	20	18	-	-	0.5	1.5	20	1.8//5	2	Inquiry
FCF-9T FCF-9U	HC-49T x 2 HC-49U x 2	10M7.5B	10.7	3	3.75	40	14	-	-	1	2	40	1.8//5	4	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	10M12A	10.7	3	6	20	23	-	-	0.5	1.5	20	2.5//2.5	2	Inquiry
FCF-9T FCF-9U	HC-49T x 2 HC-49U x 2	10M12B	10.7	3	6	40	20	-	-	1	2.5	40	2.5//1.5	4	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	10M15A	10.7	3	7.5	18	25	-	-	1	1.5	20	3.0//2	2	Inquiry
FCF-9T FCF-9U	HC-49T x 2 HC-49U x 2	10M15B	10.7	3	7.5	40	25	-	-	1	2	40	3.0//1.5	4	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	7M5A	7.8	1	2.5	15	10	-	-	1	2	-	3300//1.5	2	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	8M7.5A1	8.192	3	3.75	-	-	40	40	1	1.5	-	2000	2	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	8M7.5A2	8.448	3	7.5	18	30	50	80	1	2	-	3000	2	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U2	16M7.5A1	16.9	3	3.75	-	-	40	30	1	2	-	1000	2	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	16M7.5A2	16.9	3	7.5	18	28	-	-	0.5	2	-	1500//2	2	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	10M8A	10	3	4	40	30	-	-	0.5	2	40	1500	2	Inquiry
FCF-9T FCF-9U	HC-49T x 2 HC-49U x 2	17.9M15B	17.9	3	7.5	40	25	-	-	1	1.5	40	2000	4	Inquiry
FCF-9T FCF-9U	HC-49T x 2 HC-49U x 2	21.7M15B	21.7	3	7.5	40	25	-	-	1	1.5	40	1200	4	Inquiry
FCF-9T FCF-9U	HC-49T HC-49U	P60MA1	60	3	3	40	30	-	-	1	1.5	40	1.5	2	Inquiry
FCF-M1	UM-1	21M7.5A	21.4	3	3.75	20	18	-	-	0.5	1.5	20	850//6	2	Inquiry
FCF-M1	UM-1 x 2	21M7.5B	21.4	3	3.75	40	14	-	-	1	2	40	850//5	4	Inquiry
FCF-M1	UM-1	21M12A	21.4	3	6	20	25	-	-	0.5	1.5	20	1.2k//3	2	Inquiry
FCF-M1	UM-1 x 2	21M12B	21.4	3	6	40	20	-	-	1	2	40	1.2k//2.5	4	Inquiry
FCF-M1	UM-1	21M15A	21.4	3	7.5	18	25	-	-	1	1.5	20	1.5k//2.5	2	Inquiry
FCF-M1	UM-1 x 2	21M15B	21.4	3	7.5	40	25	-	-	1	2.5	40	1.5k//2	4	Inquiry
FCF-M1	UM-1	10M3A	10	6	1.5	18	14	-	-	0.5	4	-	1000	2	Inquiry
FCF-M5	UM-5 x 2	28M11B	28.0125	3	11	60	55	-	-	1	2	60	1500	4	Inquiry
FCF-M5	UM-5 x 2	38.8M15B	38.855	3	7.5	40	60	-	-	1	2	40	1500	4	Inquiry
FCF-M5	UM-5 x 2	40M15B	40	3	7.5	45	25	-	-	1	4	40	1000	4	Inquiry
FCF-M1	UM-1	45M12A	45	3	6	15	22	-	-	1	2	-	650//5	2	Inquiry
FCF-M1	UM-1 x 2	45M12B	45	3	6	30	20	-	-	1	3	40	650//4	4	Inquiry
FCF-M1	UM-1	45M15A	45	3	7.5	15	25	-	-	1	2	-	650//2	2	Inquiry
FCF-M1	UM-1 x 2	45M15B	45	3	7.5	30	25	-	-	1	3	40	650//2	4	Inquiry

Series	Package	Type	Frequency-MHz	Bandwidth-dB	Bandwidth-kHz	Stop BandWidth-dB	Stop BandWidth-kHz	Stop BandWidth-dB	Stop BandWidth-kHz	Ripple-dB	Insertion-dB	Guaranteed Attenuation-dB	Terminating Impedance-kΩ//pF	No of Poles	Contact
FCF-7M	7050 6-SMD	21MQ75A	21.4	3	3.75	20	18	-	-	1	2	70	-910	850//6.0	Inquiry
FCF-7M	7050 6-SMD	21MQ15A	21.4	3	7.5	18	25	-	-	0.5	1.5	70	-910	1500//2.5	Inquiry
FCF-7M	7050 6-SMD	21MQ30A	21.4	3	15	15	50	-	-	1.5	2	60	-910	2500//0	Inquiry
FCF-7M	7050 6-SMD	21.7MQ15A	21.7	3	7.5	18	28	-	-	1	2	70	-910	1500//2.5	Inquiry
FCF-7M	7050 6-SMD	45MQ75A	45	3	3.75	18	18	-	-	1	2	70	-910	350//6.0	Inquiry
FCF-7M	7050 6-SMD	45MQ15A	45	3	7.5	25	25	-	-	1	2	70	-910	560//6.0	Inquiry

Matched a series? Here's what comes next.

Once you’ve narrowed it down, the real work is confirming it works on your board not just on the datasheet. To advance your prototype manufacturing, we offer the following support:

Phase 01 // Data

Download Datasheet

Provides frequency-temperature curves, ESR plots, reflow profiles, and recommended land patterns required for layout finalization.

Phase 02 // Engineering

Validate Circuit Match

Submit your target parameters and IC model. Our laboratory verifies drive-level margins, startup conditions, and negative resistance stability.

Full-Cycle Engineering Services

Beyond standard verification, our laboratory provides complete technical support throughout your entire product lifecycle:

Contact an FCom Engineer