CX MINIATURE CRYSTALS CX-3-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 LOW-PROFILE MINIATURE AT-CUT SMD CRYSTAL 1 of 2 ! General Description CX-3-SM AT-cut crystals are leadless devices designed for surfacemounting on printed circuit boards or hybrid circuits. The crystals are low profile with a very small land area. ! ! ! ! ! ! Designed for surface-mount applications using infrared, vapour phase, wave solder or epoxy mount techniques Ideal for use with microprocessors Designed for low power applications Compatible with hybrid or PCB mounting Low ageing Full military environmental testing available Custom designs available Specification 9.6MHz to 160MHz A: ±0.01% (±100ppm) B: ±0.1% C: ±1.0% 20pF (unless other specified) Load Capacitance: see table below Motional Resistance (R1): see table below Motional Capacitance (C1): see table below Quality Factor (Q): see table below Shunt Capacitance (C0): 500mW max. Drive Level: -10° to +70°C from ±10ppm Frequency Stability Temp**: -40° to +85°C from ±20ppm -55° to +125°C from ±30ppm ±5ppm max. Ageing, first year: 3,000g peak, 0.3ms, ½ sine Shock, survival***: 20g rms 10-2,000Hz random Vibration, survival: -10°~+70°C (commercial) Operating Temperature: -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C Storage Temperature: 260°C for 20 seconds Max. Process Temperature: Note: temperature stability characteristics follow thos of AT-cut thickness-shear mode. Frequency Range: Calibration Tolerance*: D (TO P) A D D B C E Outline CX-3-SM Package Dimensions Dimension Typical Maximum (mm) (mm) A 6.73 7.11 B 2.62 2.90 C - see below D 1.27 1.52 E 1.32 1.57 Dimension Glass Lid Ceramic Lid C (mm max.) (mm max.) SM1 1.47 1.75 SM2 1.52 1.80 SM3 1.60 1.88 Specifications are typical at 25°C unless otherwise indicated. * Closer frequency calibration available ** Other turning point available *** Higher shock version available Equivalent Circuit 1 L1 CX-3-SM Motional Parameters, Q and C0 C1 R1 2 Frequency Motional Motional Quality Shunt Resistance Capacitance Factor Capacitance C1 (fF) 000s C0 (pF) 95 1.4 R1 ( C0 L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance R 1 Motional Resistance 10.0MHz W) 60 2.8 32MHz 20 7.8 36 2.4 155MHz 50 0.5 41 3.2 CX MINIATURE CRYSTALS CX-3-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 LOW-PROFILE MINIATURE AT-CUT SMD CRYSTAL 2 of 2 Circuit Design Conventional HCMOS Pierce Oscillator Circuit Rf Amplifier Osc. Freq. (Fo) RA CS C1 Buffer CX-2 C2 Solder Pad Layout 1.78 3.05 5.46 Terminations Packaging CX-3H-SM- Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) Designation Termination SM1 Gold Plated SM2 Nickel, Silver Plated SM3 Nickel, Solder Plated and Solder Dipped Order Code CX-3 O.T.=3rd O.T. Mode Blank = Fundamental “S” if special or custom design Blank if standard Total Frequency Tolerance Frequency -SM1 32MHz SM1 SM2 SM3 C = Ceramic Lid Blank = Glass Lid ( 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