CX-3V-SM232.768B

CX MINIATURE CRYSTALS 18kHz to 600kHz MINIATURE SMD CRYSTAL EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-3V-SM CX-3V-SM Page 1 of 2 General Description The miniature CX-3V-SM crystals are leadless devices designed for surface-mounting on printed circuit boards or hybrid substrates. These crystals are intended for use in Pierce oscillators. Hermetically sealed in a rugged, miniature ceramic package the crystals are produced using a photo-lithographic process giving repeatability and consistency.        Miniature tuning fork design High shock resistance Designed for low power applications Compatible with hybrid or PCB mounting Low ageing Full military environmental testing available Ideal for battery operated applications Specification Frequency Range: Functional Mode: Calibration Tolerance*: Motional Resistance (R): Motional Capacitance (C): Quality Factor (Q): Shunt Capacitance (C): Drive Level: Turning Point (T)**: Temperature Coefficient: Ageing, first year: Shock***: Vibration, survival: Operating Temperature: Storage Temperature: Max. Process Temperature: 18kHz to 600kHz Tuning Fork (Flexure) A, B, or C (see below) See Figure 1 Max: 18-25kHz, 2 x typ. 25-600kHz, 2.5 x typ. See Figure 2 See Figure 3 min. is 0.25 x typ. 1.8pF max. 18-25kHz 0.5µW max. 25-600kHz 1.0µW max. See Figure 4 -0.035ppm/°C ±5ppm max. 1,500g peak, 0.3ms, ½ sine 10g rms 20-2,000Hz random -10°~+70°C (commercial) -40°~+85°C (industrial) -55°~+125°C (military) -55°C~+125°C 260°C for 20 seconds D (TOP) A D D B C E Outline CX-3V-SM Package Dimensions Dimension Typical (mm) Maximum (mm) A B C D E Dimension “C” 6.73 2.62 1.27 1.32 Glass Lid (mm max.) 7.11 2.90 see below 1.52 1.57 Ceramic Lid (mm max.) Specifications are typical at 25°C unless otherwise indicated. * ** *** Closer frequency calibration available Other turning point available A higher shock and vibration version is available. SM1 SM2 SM3 1.47 1.52 1.60 1.75 1.80 1.88 CX-3V Crystal Calibration Tolerance at 25°C Equivalent Circuit L1 R1 Calibration Frequency Range (kHz) 18~74.9 75~169.9 170~249.9 250~600 1 C1 C0 2 A B C ±0.003% ±0.01% ±0.1% ±0.005% ±0.01% ±0.1% ±0.01% ±0.02% ±0.2% ±0.02% ±0.05% ±0.5% L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance R 1 Motional Resistance CX MINIATURE CRYSTALS 18kHz to 600kHz MINIATURE SMD CRYSTAL EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-3V-SM Page 2 of 2 Figure 3 - CX-3V Typical Quality Factor (Q) 300 Circuit Design Conventional HCMOS Pierce Oscillator Circuit RB Amplifier 200 100 in '000s 50 Buffer 20 18 50 100 200 500 C5 R) Osc. Freq. (Fo) Frequency (kH z) C CX-2 C Figure 4 - CX-3V Typical Turning Point Temp. (°C) +80 +70 +60 +50 +40 To(°C) +30 +20 + 10 Figure 1 - CX-3V Typical Motional Resistance (R) 300 200 100 50 R1 (k 9) 20 10 5 0 - 10 -20 10 20 50 100 200 600 2 18 50 100 200 600 Frequency (kHz) Frequency (kHz) Figure 2 - CX-3V Typical Motional Capacitance (C) 5 Solder Pad Layout 1.78 3.05 5.46 C1 (fF) 2 1.0 0.5 18 50 100 200 600 Frequency (kHz) Terminations Designation Termination Packaging CX-1-SM - Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) SM1 SM2 SM3 Gold Plated Nickel, Silver Plated Nickel, Solder Plated and Solder Dipped Order Code CX-3V O.T.=3rd O.T. Mode Blank = Fundamental Frequency -SM1 32.768kHz ( A SM1 SM2 SM3 Calibration Tolerance* @ 25°C A, B, C *For other calibration tolerances enter figure in ppm / I ) “S” if special C = Ceramic Lid Blank = Glass Lid or custom design Blank if standard Temperature Range: C = Commercial I = Industrial M = Military S = Specify