Crystals

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	Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Type	Frequency	Frequency Stability	Frequency Tolerance	Load Capacitance	ESR (Equivalent Series Resistance)	Operating Mode	Operating Temperature	Ratings	Mounting Type	Package / Case	Supplier Device Package	Size / Dimension	Height - Seated (Max)
	LFXTAL027946 HC49/4HSMX 13.4 X 4.9MM16.0MHZ IQD Frequency Products	746 In Stock	1 : $0.81000 Cut Tape (CT) 1,000 : $0.52614 Tape & Reel (TR)	HC49/4HSMX	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	MHz Crystal	16 MHz	±50ppm	±30ppm	22pF	40 Ohms	Fundamental	-10°C ~ 60°C	-	Surface Mount	HC49/4HSMX	HC49/4HSMX	0.528" L x 0.193" W (13.40mm x 4.90mm)	0.169" (4.30mm)
	ECS-40-20-5PXDU-TR CRYSTAL 4.0000MHZ 20PF SMD ECS Inc.	10,175 In Stock	1 : $0.74000 Cut Tape (CT) 1,000 : $0.68648 Tape & Reel (TR)	CSM-7X-DU	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	MHz Crystal	4 MHz	±100ppm	±30ppm	20pF	150 Ohms	Fundamental	-55°C ~ 125°C	-	Surface Mount	HC-49/US	-	0.449" L x 0.189" W (11.40mm x 4.80mm)	0.169" (4.30mm)

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Crystal products are passive components most commonly used as time or frequency references in electronic systems. Consisting of a piezoelectric crystal that mechanically vibrates at a known frequency, their use requires provision of an external oscillator circuit with carefully designed capacitance, drive voltage, and series resistance characteristics, to generate a signal at the indicated crystal frequency that operates successfully over the operating temperature range, without damaging the crystal element. Active devices which integrate this additional necessary circuitry are considered oscillators and are catalogued separately.