CX-3H-SM232.768B

CX MINIATURE CRYSTALS 18kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-3H-SM CX-3H-SM Page 1 of 2 General Description The CX-3H-SM quartz crystals are leadless devices designed for surface-mounting on printed circuit boards or hybrid circuits. These miniature crystals are intended for use with series oscillators. Hermetically sealed in a rugged, ceramic package, the crystals are produced utilizing a photo-lithographic process giving excellent repeatability and consistent high quality.        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-3H-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 Calibration Frequency Range (kHz) 18~74.9 75~169.9 170~249.9 250~600 Equivalent Circuit L1 R1 A B C1 C0 ±0.003% ±0.01% ±0.1% ±0.005% ±0.01% ±0.1% ±0.01% ±0.02% ±0.2% ±0.02% ±0.05% ±0.5% 1 2 C Terminations Designation Termination L 1 Motional Inductance C 1 Motional Capacitance C0 Shunt Capacitance R 1 Motional Resistance SM1 SM2 SM3 Gold Plated Nickel, Silver Plated Nickel, Solder Plated and Solder Dipped CX MINIATURE CRYSTALS 18kHz to 600kHz MINIATURE SMD CRYSTAL FOR SERIES OSCILLATORS EURO QUARTZ Telephone: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk Web: www.euroquartz.co.uk CX-3H-SM Page 2 of 2 Figure 2 - CX-3H Typical Motional Capacitance (C) 5 Circuit Design Conventional Series Oscillator Circuit C1 (fF) 2 1.0 0.5 18 50 100 200 600 Frequency (kHz) Figure 3 - CX-3H Typical Quality Factor (Q) Oscillator Buffer 50 20 CX-1H Crystal 10 in '000s 5 Figure 1 - CX-3H Typical Motional Resistance (R) 2 1000 500 18 50 1 00 200 600 Frequency (kH z) 200 R1 (k 100 Figure 4 - CX-3H Typical Turning Point Temp. (°C) +80 +70 +60 +50 9) 50 20 10 18 50 100 200 600 Frequency (kHz) +40 To(°C) +30 +20 + 10 0 - 10 -20 18 50 100 200 600 Frequency (kHz) Solder Pad Layout 1.78 3.05 5.46 Packaging CX-3H-SM- Bulk Pack (Standard) - 16mm tape, 178mm or 330mm reels (Optional) per EIA 481 - Tray Pack (Optional) Order Code CX-3H C = Ceramic Lid Blank = Glass Lid 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 or custom design Blank if standard Temperature Range: C = Commercial I = Industrial M = Military S = Specify