Crystals in HC-49/U and HC-50/U

Microcomputers, audio/video-applications, wireless phones, communication devices

Cases HC 49-50 series are highly reliable,
hermetically sealed by seam welding.

Cases HC 49-50 series are designed for through hole mount, but it can by designed for SMD too.

Crystals in SMD modification can by delivered in tapes wound on reels, suitable for automatic assembly.

Type	HC-49/U, HC-50/U
Overtone	1.	3.	5.	7.	9.
Frequency range	2.4-40MHz	16-120MHz	30-190MHz	90-190MHz	120-190MHz
Freq. adjustment tolerance at 25 °C	±5, ±7, ±10, ±15, ±20, ±50 x 10^-6
Frequency stability	see table 1
Equivalent series resistance	see table 2
Aging	±1, ±2, ±3 ppm/year
Storage temperature range	-40 … +90 °C
Load capacitance	series resonance, C_L= 5 … 50 pF
Drive level	10 – 1000 µW

Differences from standard values and other parameters can be consulted.

(table 1)

(table 2)
for first overtone

Overtone	Frequency [MHz]
	1.6		2.0		2.4		3.0		4.5		6		8		15		22
1.		500 Ω		300 Ω		250 Ω		120 Ω		80 Ω		30 Ω		20 Ω		15 Ω

for higher overtones

through hole modification

	H	W	D	Note
HC 49/U	13.4	13.7	0.48
HC 49/11	11.2	13.7	0.48
HC 49/10	10.5	13.7	0.48	from 4.5MHz
HC 49/x-3				3 wires*
HC 49/x-3S				3 – point mounting for higher resistivity to shock and vibrations

HC 50/U	13.4	6.2	1.06
HC 50/11	11.2	6.2	1.06

* central wire is connected to the case

SMD modification

** clip means solderable metal cable sleeve