EURO QUARTZ CX18SM AT CRYSTAL Ultra-Miniature SMD Crystal 30MHz to 50MHz FEATURES Ultra-miniature SMD package 1.55 x 0.95 x 0.35mm Frequency Range 30MHz ~ 50MHz High shock and vibration resistance Hermetically sealed Available with glass or ceramic lid Tight calibration tolerance Custom designs available OUTLINE & DIMENSIONS DESCRIPTION CX18SM crystals are designed for applications where miniaturization is paramount. The rugged crystal is ideally suited for a wide variety of high frequency applications including medical electronics, cardiac rhythm management, pacemakers for example. Also auitable for cochlear implants, infusion pumps and wildlife tracking. Dim. H Glass Lid SM1 SM2 SM3 SM4 SM5 0.35 0.37 0.42 0.37 0.42 SPECIFICATION Specifications stated are typical at 25°C unless otherwise indicated. Specifications may change without notice. Fundamental Frequency: Motional Resistance R (Ω): Motional Capacitance C1 (fF): 50.0MHz 60 1.2 QualityFactor Q (k): Shunt Capacitance C0 (pF): Shock, Survival: Vibration, Survival3: Operating Temperature Range: Storage Temperature Range: Maximum Process Temperature: 1. 2. 3. Designation 44 0.6 Standard Calibration Tolerance1: Load Capacitance: Drive Level: Frequency Stability1,2 -10° to +70°C: -40° to +85°C: -55° to +125°C: Ageing, First Year: TERMINATIONS - PLATING ±100ppm or tighter as required. 10pF (or as specified) 200µW maximum ±50ppm to ±10ppm ±100ppm to ±20ppm ±100ppm to ±30ppm ±5ppm maximum (Better than ±1ppm available) 5000g, 0.3ms, ½ sine 20g rms, 10~2000Hz swept sine -10°C to +70°C (Commercial) -40°C to +85°C (Industrial) -55°C to +125°C (Military) -55° to +125°C +260°C for 20 seconds Other tolerances available, contact Euroquartz sales Does not include calibration tolerance. (Frequency stability characteristics follow that of the AT-Cut thickness-shear mode.) Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available. Termination SM1 SM2 SM3 SM4 SM5 Gold Plated (Lead Free) Solder Plated Solder Dipped Solder Plated (Lead Free) Solder Dipped (Lead Free) CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance C1 Motional Capacitance L1 Motional Inductance C0 Shunt Capacitance PACKAGING OPTIONS CX18SM AT crystals are available either tray packed (<250pcs) or tape and reel (>250 pieces). 12mm tape, 178mm or 330mm reels (EIA 418). HOW TO ORDER CX18SM AT CRYSTALS CX18 - S 'S' if special, custom design. Otherwise leave blank - _ Blank = glass lid - SM1 - Terminations SM1 = Gold plated * SM2 = Solder plated SM3 = Solder dipped SM4 = Solder plated * SM5 = Solder dipped * * = Lead free 50.0M, 100 Frequency M = MHz Calibration Tolerance @25°C (in ppm)* / 100 / - / Frequency Stability over Temp. Range (in ppm)* I Temp. Range C = -10° ~ +70°C I = -40° ~ +85°C M = -55° ~ +125°C S = Customer specified *Alternative 'total' tolerance (in ppm) EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk