Oscilent Corporation | 638 Series Ceramic Resonator Page 1 of 2 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 OPERATING CONDITIONS / ELECTRICAL CHARACTERISTICS Frequency Range Frequency Accuracy Resonant Impedance Stability in Temp. Aging for Ten Years (KHz) -20~+80°C (%) @ 25°C ohm max. 375 ~ 429 ±2 KHz 20 430 ~ 509 ±2 KHz 20 510 ~ 699 ±2 KHz 30 700 ~ 999 ±0.5% 70 1000 ~ 1250 ±0.5% 100 ±0.3% Load Capacitance (pF) C1 C2 120 470 100 100 ±0.3 . Dimensions Freq. Range (KHz) 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 Oscilent Corporation | 638 Series Ceramic Resonator Page 2 of 2 . PART NUMBER GUIDE Part Number Frequency 638 - 680 K Series Number e.g. -680K = 680KHz Range = 375 ~ 1250 KHz Packaging** Blank* = Bulk -TR = Tape/ Reel 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: [email protected] Crystal Oscillators | Quartz Crystal | TCXO | VCXO | IF SAW Filter | RF SAW Filter | Ceramic Resonator Crystal Filter | Ceramic Filter | SAW Filter / SAW Devices | Site Map Series No.: 638