CX MINIATURE CRYSTALS CX-2-SM EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 9.6MHz to 160MHz MINIATURE AT-CUT SMD CRYSTAL 1 of 2 ! ! ! ! ! ! General Description The miniature CX-2-SM AT-cut crystals in leadless ceramic packages have been designed for surface-mounting on printed circuit boards or hybrid circuits. These crystal have a low profile and a very small footprint. Manufactured by a photo-lithographic process, the CX-2-SM is a robust crystal that has gained widespread acceptance in the industry. A H C Load Capacitance: Motional Resistance (R1): Motional Capacitance (C1): Quality Factor (Q): Shunt Capacitance (C0): Drive Level: Temperature Stability**: 3 F D E Terminal 1 is electrically connected to terminal 3 Outline CX-2-SM Package Dimensions Dimension Typical Maximum (mm) (mm) A 6.60 B 2.39 2.74 C - see below D 0.89 1.14 E 1.50 1.75 F 1.27 1.52 G 2.67 2.92 H 3.94 4.19 I 5.33 5.59 Ageing, first year: Shock, survival***: Vibration, survival: Operating Temperature: 6.99 Dimension Glass Lid Ceramic Lid C (mm max.) (mm max.) SM1 1.65 1.91 SM2 1.70 1.96 SM3 1.78 2.03 Storage Temperature: Process Temperature: Specifications are typical at 25°C unless otherwise indicated. Frequency stability characteristics follow that of AT-cut, thicknessshear mode crystals. * ** ** Closer calibration available, as low as ±5ppm Does not include calibration tolerance A higher shock version is available, refer to data sheet for the model CX-1HG CX-2-SM Motional Parameters, Q and C0 Frequency Equivalent Circuit 1 C1 R1 C0 R 1 Motional Resistance Motional Motional Quality Shunt Resistance Capacitance Factor Capacitance C1 (fF) 000s C0 (pF) 95 1.4 R1 ( 10.0MHz L1 9.6MHz to 160MHz A ±0.01% (±100ppm) B ±0.1% C ±1.0% 20pF (unless other required) See table See table See table See table 500mW max. -10° to +70°C from ±10ppm -40° to +85°C from ±20ppm -55° to +125°C from ±30ppm ±5ppm max. 3000g 0.3ms, ½ sine 20g rms 10-2,000Hz random -10°~+70°C (commercial) -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C 260°C for 20 seconds 2 I G B Specification Frequency Range: Calibration Tolerance*: 1 (TO P) Surface-mount - infrared, vapour phase, wave solder or epoxy mount techniques Low profile, hermetically sealed package Available with glass or ceramic lid High shock and vibration resistance Custom designs available Full military environmental testing available L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance 2 W) 60 2.8 32MHz 20 7.8 36 2.4 155MHz 50 0.5 41 3.2 CX MINIATURE CRYSTALS CX-2-SM EUROQUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: [email protected] Web: www.euroquartz.co.uk Page 9.6MHz to 160MHz MINIATURE AT-CUT SMD CRYSTAL 2 of 2 Circuit Design Packaging Conventional HCMOS Pierce Oscillator Circuit Rf Amplifier CS C1 Buffer Osc. Freq. (Fo) RA CX-2 CX-1-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) C2 Solder Pad Layout 2.67 Terminations Designation 2.87 1 2 0.6 Termination SM1 Gold Plated SM2 Nickel, Silver Plated SM3 Nickel, Solder Plated and Solder Dipped Order Code CX-2 O.T.=3rd O.T. Mode Blank = Fundamental Total Frequency Tolerance Frequency -SM1 32MHz S if special C = Ceramic Lid SM1 or custom design Blank = Glass Lid SM2 Blank if standard SM3 ( A Calibration Tolerance* @ 25°C A, B, C / 25ppm / 50ppm / I Frequency Stability over Temperature Range *For other calibration tolerances enter figure in ppm ) Temperature Range: C = Commercial I = Industrial M = Military S = Specify