Ceramic Resonator
Series Number Package Description Last Modified
638 ZTB Ceramic Surface Mountable Mar. 23 2009
FEATURES
- Low frequencies
- Extended temperature range
- Surface Mountable Ceramic Resonator
- High stability
- RoHS Compliant
Surface Mountable ceramic resonators
OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS
Frequency Range Frequency Accuracy Resonant Impedance Stability in Temp. Aging for Ten Years  Load Capacitance (pF)
 (KHz) @ 25°C ohm max. -20~+80°C (%) C1 C2
375 ~ 429 ±2 KHz 20 ±0.3% ±0.3 120 470
430 ~ 509 ±2 KHz 20 100 100
510 ~ 699 ±2 KHz 30
700 ~ 999 ±0.5% 70
1000 ~ 1250 ±0.5% 100
.
drawing of low frequency ceramic resonator ZTB
Freq. Range
(KHz)
Dimensions
W T H P T1 T2
375 ~ 429 8.0 3.5 9.0 5.0 1.1 0.15
430 ~ 509 7.5 3.3 8.5 5.0 1.1 0.15
510 ~ 699 7.0 3.0 8.5 5.0 1.1 0.15
700 ~ 1250 5.0 2.2 6.0 2.5 0.8 0.12
.
PART NUMBER GUIDE
Part Number Frequency Packaging**
638 - 680 K
Blank* = Bulk
-TR = Tape/ Reel
Series Number
e.g. -680K = 680KHz
Range = 375 ~ 1250 KHz
NOTE: Deviations on all parameters available.  Please consult Oscilent for details.
DEFINITIONS: Click on the characteristic names above, for definitions of the particular characteristic.
*STANDARDS: "Blank" part number selections, indicate standard variables for the particular characteristic.
**PACKAGING: Click on the packaging name above for tape/reel specifications
Oscilent Corporation - CALL 949.252.0522
18195 East McDurmott Street . Building D . Irvine . CA 92614 . USA
Fax: 949.252.0599 . E-Mail: Sales@Oscilent.com
Series No.:
638

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