Quartz Crystals
Series Number Package Description Last Modified
121 ~ 122 3x8, 2x6 Low Frequency Quartz Sept 01. 2006
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Quartz Crystal FEATURES
- Excellent shock and vibration characteristics
- Miniature size
- Long term stability
- Cost effective
- RoHs / Lead Free compliant
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OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
PARAMETERS 121 Series 122 Series UNITS
Size (Figure No.) - 3x8 (1) 2x6 (2) -
Frequency Range fO 38.4 ~ 76.8 KHz
Frequency Tolerance f/fo ±10 or ±20 PPM
Load Capacitance (typ.) CL 12.5 (typ.) pF
Drive Level (max.) DL 1.0 ± 0.2 µW
Resistance (at Series Resonance) R1 30 max. 40 max. Kohm
Q-Factor Q 80,000 (typ.), 50,000 min. 70,000 (typ.), 40,000 min. -
Turnover Temperature TM +25 ±5 °C
Parabolic Curveture Constant - -0.036 ± 0.006 PPM/C
Shunt Capacitance Co 1.30 (typ.), 2.0 max. 1.10 (typ.), 1.8 max. pF
Capacitance Ratio - 530 (typ.), 650 max. 470 (typ.), 650 max. -
Operating Temperature TOPR -10~+60 C
Storage Temperature TSTG -20~+70 C
Shock Resistance - Drop test 3 times on hard wooden board fr. height 75cm/±3 PPM max. PPM
Insulation Resistance IR 500 Mohm min./DC100V Mohm
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PART NUMBER GUIDE
Series
Number
Frequency Load Capacitance Tolerance @ +25C Operating 
Temp ( C )
122 - 40.0K - 12.5 - 20 R
121 = 3x8
(Fig. 1)
122 = 2x6
(Fig. 2)
Enter your required frequency. e.g. 40.0K = 40.000 KHz
12.5 = 12.5pF
SR = Series Resonance
Others Avail.*
10 = ±10PPM
20 = ±20PPM
Others Avail.
R = -10~+60
Others Avail.
NOTE: Deviations on all parameters available.  Please consult Oscilent for details.
DEFINITIONS: Click on the characteristic names above, for definitions of that particular characteristic.
*LOAD CAP.: 12.5pF standard.  Other load capacitance available, please specify.
Series No.:
121 to 122

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