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ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM
CRYSTALS CRYSTALS
4.88 ± 0.020
0.43
(10.5) Max.
11.35
12.7 Min. 13.46 Max.
11.35 Max.
4.65 Max.
This product represents our selection of
standard resistance weld type quartz
crystals.
OPTIONS:
– extended temperature range
– pullability
– mylar spacer
– vinyl sleeve
– third ground lead
– radial Tape and Reel (1,000 pcs)
FEATURES
•
Cost effective
•
Excellent aging
•
Wide frequency range
• Tight tolerances
• Excellent reliability
• “AT” cut crystal
HC-49UQUARTZ CRYSTAL
OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS
PACKAGE DIMENSIONS (mm)
PARAMETERS CONDITIONS MINIMUM MAXIMUM UNITS
FREQUENCY RANGE fo1.800 100.000 MHz
FREQUENCY TOLERANCE Ref @ +25˚C -30 +30 PPM
FREQUENCY STABILITY Ta=-10˚C ~ +70˚C -50 +50 PPM
OPERATING TEMPERATURE TOPR -10 +70 ˚C
STORAGE TEMPERATURE TSTG -30 +85 ˚C
SHUNT CAPACITANCE C07.0 pF
LOAD CAPACITANCE CL (Customer Specified) 10.0 Series pF
DRIVE LEVEL 1.800 ~ 3.000MHz, 3.000 ~ 100.000MHz 2.0, 1.0 mW
AGING (FIRST YEAR) @ +25˚C -5.0 +5.0 PPM
FREQUENCY RANGE (MHz) MODE MAX ESR ΩFREQUENCY RANGE (MHz) MODE MAX ESR Ω
1.800 ~ 1.999 Fundamental 750 5.000 ~ 5.999 Fundamental 50
2.000 ~ 2.399 Fundamental 500 6.000 ~ 7.999 Fundamental 40
2.400 ~ 2.999 Fundamental 300 8.000 ~ 9.999 Fundamental 35
3.000 ~ 3.199 Fundamental 200 10.000 ~ 12.499 Fundamental 30
3.200 ~ 3.699 Fundamental 120 12.500 ~ 15.999 Fundamental 25
3.700 ~ 4.199 Fundamental 100 16.000 ~ 25.000 Fundamental 20
4.200 ~ 4.899 Fundamental 70 23.000 ~ 100.000 3rd O/T 40
4.900 ~ 4.999 Fundamental 55
Figure 1) HC-49U - Side and Bottom views
PART NUMBERING GUIDE
“EXAMPLE”
FREQUENCY (16.0000 MHz) LOAD CAPACITANCE* PACKAGE TYPE
ECS – 160 – 20 – 1
* Load capacitance (xx=xx pF, S= series resonance)
Note: See Product Selection Guide for additional options.
EQUIVALENT SERIES RESISTANCE / MODE OF OSCILLATION
+ 30
- 30
- 10
25 60
f/f0
PPM
TEMP.(˚C)
Figure 2) Frequency vs Temperature Curve
