Vectron International designs and manufactures HC35 series crystals for a wide variety of commercial and high reliabilty

excellent aging and low perturbations.

We have tight controls over series resistance, motional capacitance, temperature characteristics and other parameters critical to your

application. We primarily build to customer specifications but we’ve optimized designs on all frequencies that are commonly used in

telecommunications.

Please feel free to contact us with your questions. We are here to assist you with selecting the best performing and most cost

effective crystal for your application.

Typical Electrical Performance Characteristics

Vectron International • 4914 Gray Road • Cincinnati, OH 45232 • Tel: 513-542-5555 • Tel: 1-88-VECTRON-1 • http://www.vectron.com

TYPICAL ESR & C

Mode

Frequency Range

(MHz)

*ESR Typical

(ohms)

*C

(fF)

Fund.

7 - 35 MHz

25-360

5 - 25

17 - 105 MHz

40

1 -2.5

40 - 175 MHz

75

0.70

70 - 225 MHz

120

0.35

EQUIVALENT CIRCUIT OF A CRYSTAL RESONATOR

*ESR and C1 values are dependent upon the specified frequency and mode of vibration.

AT-CUT VARIETIES

Performance Characterisitc

Symbol

Typical Performance Specifications

Frequency Range

F

O

7 MHz to 225 MHz

Operating Temperature Range

Frequency Stability over Operating Temp Range

F

T

+/- 5 ppm to +/- 50 ppm (mode, frequency and operating temp range dependent)

F

+/- 10 ppm typical (+/- 2 ppm available)

Equivalent Series Resistance

R (ESR)

10 ohms to 100 ohms (mode and frequency dependent)

Shunt Capacitance

C

0

2.5 pF - 4 pF typical (MIL-PRF-3098 CR101, CR102, CR103 types < 7 pF max.)

Motional Capacitance

C

1

0.1 fF - 30 fF (mode and frequency dependent)

Load Capacitance

C

L

series to 32 pF (customer specified load)

Drive Level

DL

100 uW (50 uW to 5 mW)

Aging per year after first 30 days

< 3 ppm (< 1ppm available)

DOUBLY ROTATED (DR)-CUT VARIETIES (SC, MODIFIED SC, IT, ETC...)

Performance Characterisitc

Symbol

Typical Performance Specifications

Frequency Range

F

O

7 MHz to 225 MHz

Turn Point

TP

Frequency Calibration Tolerance

F

+/- 1 ppm to +/- 5 ppm typical

Equivalent Series Resistance

R (ESR)

15 ohms to 180 ohms (mode and frequency dependent)

Shunt Capacitance

C

0

2.5 pF - 4 pF typical

Motional Capacitance

C

1

0.1 fF - 30 fF (mode and frequency dependent)

Load Capacitance

C

L

series to 32 pF (customer specified load)

Drive Level

DL

100 uW (50 uW to 5 mW)

Aging per year after first 30 days

1 ppm

PHASE NOISE @ 100 Hz OFFSET (dBc/Hz)

Mode - Cut

Frequency Range

Phase Noise

Fundamental-AT

7 MHz -to 30 MHz

-80 to -115

Fundamental-DR

17 MHz - 105 MHz

-80 to -135

-115 to -150

40 MHz - 175 MHz

-90 to -135

-115 to -140

70 MHz - 225 MHz

-80 to -110

Phase Noise performance is mode and frequency dependent

NOMINAL G-SENSITIVITY (4 pt. blank mount)

Cut

G-SENSITIVITY

AT

DR (SC-IT)

Results assume same frequency and mode when specified. Better results are available.