Filters | Monolithic Crystals

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Mfr Part #	Quantity Available	Price	Series	Package	Part Status	Frequency - Center	Impedance	Insertion Loss	Bandwidth	Ripple	Number of Poles	Operating Temperature	Mounting Type	Package / Case	Size / Dimension	Height (Max)

ECS-96SMF21A30 MONO XTAL 21.4MHZ 2P 2DB SMD ECS Inc.	4,956 In Stock 2,500 Factory	1 : $11.32000 Cut Tape (CT) 500 : $5.87210 Tape & Reel (TR)	ECS-96SMF	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	21.4 MHz	2 kOhms	2dB	30 kHz	1dB	2	-30°C ~ 80°C	Surface Mount	6-SMD, No Lead	0.276" L x 0.197" W (7.00mm x 5.00mm)	0.059" (1.50mm)
ECS-21K-30B MONO XTAL 21.4MHZ 4P 2PC 2DB TH ECS Inc.	256 In Stock	1 : $6.58000 Bulk	MCF	Bulk	Active	21.4 MHz	1.8 kOhms	2dB	30 kHz	1dB	4	-20°C ~ 70°C	Through Hole	UM-1	-	-
ECS-45K20B MONO XTAL 45MHZ 4P 3DB TH 2PC ECS Inc.	198 In Stock 100 Factory	1 : $16.77000 Bulk	MCF	Bulk	Active	45 MHz	910 Ohms	3dB	35 kHz	1dB	4	-20°C ~ 70°C	Through Hole	UM-1	0.287" L x 0.098" W (7.30mm x 2.50mm)	0.315" (8.00mm)

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Monolithic Crystals

Monolithic crystal filter (MCF) products are used in radio and related applications as bandpass filters. Closely related to the quartz crystal resonators used widely for frequency generation, MCF filters employ the piezoelectric and mechanical resonance properties of the quartz material to produce a filter with very high selectivity in a compact package.