Name: QUARTZ CRYSTAL UNIT
Uploaded: 2026-01-15T09:29:26+08:00

QUARTZ CRYSTAL UNIT HC-49S/4PD

TYPE	HC-49S/4PD
Frequency range	3.5MHz~125MHz
Crystal cut	AT;BT
Frequency Tolerance(at25C)	±5ppm~±30ppm
FrequencyTemperature Characteristics	"AT:±2.5ppm(0℃-50℃);+5ppm(-10℃-60℃);+10ppm(-20℃-70℃);+30ppm(-40℃-85℃)"BT:±100ppm(-20℃-70℃);
Storage Time.Range	-40℃~+85℃
Equivalent Series Resistance( ESR)	See Table
Load Capacitance(CL)	4pf~∞
ShuntCapacitance(Co)	<5pf
Insulation Resistance	>500M2 At DC 100V
Drive Level	1μw ~100μw
Aging(Year)	±3ppm(Year)

FREQUENCIES VS EQUIVALENT SERIES RESISTANCE

Frequency(MHz)	Mode	ESR(Ω)
3.500 ≤f<4.000	AT/FUND	150~100
4.000 ≤f<6.000	AT/FUND	100~60
6.000 ≤f<10.000	AT/FUND	60~50
10.000≤f<15.000	AT/FUND	50~30
15.000≤f<35.000	AT/FUND	≤ 25
21.000 ≤f<40.000	BT/FUND	≤ 40
25.000 ≤f<100.000	3rd Overtone	80~60
In addition to the parameters listed in the table, it can be designed according to customer needs