CRYSTALS
DEFINITONS | CRYSTALS-DIP | CRYSTALS-SMD | CERAMIC RESONATOR
QUARTZ CRYSTAL
 　HC-49/U TYPE

　FEATURE

  • Metal welded package
  • High shock resistance
  • Excellent frequency aging stability
  • High heat resistance
SPECIFICATION
FEEQUENCY RANGE 1.0-100.0MHz
OSCILLATION MODE AT CUT Fundamental, 3rd, 5th
FREQUENCY TOLERANCE ±20,±30,±50ppm at 25℃
OPERATING TEMPERATURE CHARATERISTICS See table 1
LOAD CAPACITANCE Serles, 16,20,30,32pF or speclal
DRIVE LEVEL From 100μW to 500μW
Parallel capacitance 7.0pF max or speclal
SERIES RESISTANCE See table 2
INSULATION RESISTANCE More than 500MΩ at DC 100V
AGING ±5ppm/year
MEASURE INSTRUMENT Saunders 250B

table 1

Frequency stability (ref.to 25℃)

operating temp
±20ppm
±30ppm
±50ppm
0-50℃
O
O
O
-10 - 60℃
O
O
O
-20 - 70℃
O
O

table 2
Equivalent series resistance (ESR)

Frequency(MHz)
Mode
ESR(max Ω)
1.8-2.9
Fundamental
300-500
3-4.9
Fundamental
90-120
5-6.9
Fundamental
50-70
7-9.9
Fundamental
30-50
10-19.9
Fundamental
30-40
20-33.0
Fundamental
30
25-29.9
3rd overtone
40
30-49.9
3rd overtone
40-50
50-69.9
3rd overtone
50-60
70-80
3rd overtone
60-70
70-100
3rd overtone
100
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