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Quartz Crystals

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Application Notes

Quartz Crystals

Andhra Electronics Limited manufactures high stability, low ageing crystals from 1 MHz to 170 MHz. All crystals are manufactured in a class 1000 clean room environment. Most crystals can be delivered in 7 days.

Package	Model	Weld Type	Frequency Range	Mode of OS	Features	ROHS Compatible	Data Sheet
Through Hole	HC-49/U HC-49/T HC-50/U HC-42/U	Resistance Weld	1.8432 to 36.864 MHz	FUND	High Stability Less than 3 ppm/year aging All Metal Welded Package
			20 to 150 MHz	OVERTONE
	HC49U/S2	Resistance Weld	3 to 33.5 MHz	FUND	Frequency Stability 10/20/30 ppm
			26 to 75 MHz	OVERTONE
	HC-43/U	Cold Weld	1.8432 to 36.864 MHz	FUND	High Stability Less than 1 ppm/year aging. All Metal Welded Package
			20 to 150 MHz	OVERTONE
	HC-49/U 3 lead	Resistance Weld	3 to 36.864 MHz	FUND	High Stability Less than 3 ppm/year aging. All Metal Welded Package
			20 to 150 MHz	OVERTONE
	HC-49 U Gull Wing	Resistance Weld	1.8432 to 36.864 MHz	FUND	High Stability Less than 3 ppm/year aging. All Metal Welded Package
			20 to 150 MHz	OVERTONE
	HC-51/U HC-48/U HC-47/U	Resistance Weld	1 to 37 MHz	FUND	High Stability Less than 3 ppm/year aging. All Metal Welded Package
			20 to 150 MHz	OVERTONE
	HC-36/U	Cold Weld	1 to 37 MHz	FUND	High Stability Less than 1 ppm/year aging. All Metal Welded Package
			20 to 150 MHz	OVERTONE
	TO-5	Cold Weld	4 to 40 MHz	FUND	High Stability Less than 1 ppm/year aging. All Metal Welded Package
			20 to 125 MHz	OVERTONE
	UM-1 UM-1 Slim UM-1 3lead	Resistance Weld	7.5 to 41 MHz	FUND	High Stability Less than 3 ppm/year aging. All Metal Welded Package
			20 to 170 MHz	OVERTONE
	UM-1 Cold Weld	Cold Weld	7.5 to 41 MHz	FUND	High Stability Less than 1 ppm/year aging. All Metal Welded Package
			20 to 170 MHz	OVERTONE
	UM-5	Resistance Weld	14 to 37 MHz	FUND	High Stability Less than 3 ppm/year aging. All Metal Welded Package
			45 to 120 MHz	OVERTONE
	Unpackaged	Monitor Crystals	4 to 10 MHz		Chrome / Gold Plating
	Tuning Fork Crystal	Tubular	32.768 KHz	FUND	Frequency Stability 20 ppm All Metal Welded Package
SMD	SMD Tuning Fork 2pads	Ceramic Package	32.768KHz	FUND	Frequency Stability 20ppm
	HC-51/U SMD	Resistance Weld	1 to 37 MHz	FUND	High Stability, Less than 3 ppm/year aging.