EURO QUARTZ CX14SM AT CRYSTAL Ultra-Miniature SMD Crystal 20MHz to 50MHz FEATURES Designed for infrared, vapour phase or epoxy mounting Low profile, (<0.59mm) hermetically sealed ceramic package Excellent ageing characteristics High shock and vibration resistance Full military testing available Available with glass or ceramic lid OUTLINE & DIMENSIONS DESCRIPTION CX14SM crystals are designed for applications requiring very small footprint and low profile (<0.59mm). Using micro-machining processes this hermetically-sealed crystal ensures high stability and low ageing. 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): QualityFactor Q (k): Shunt Capacitance C0 (pF): Standard Calibration Tolerance1: Load Capacitance2: Drive Level: Frequency Stability1,3 -10° to +70°C: -40° to +85°C: -55° to +125°C: Ageing, First Year4: Shock, Survival5: Vibration, Survival6: Operating Temperature Range: Storage Temperature Range: Maximum Process Temperature: 1. 2. 3. 4. 5. 6. 26.0MHz 20 3.5 50.0MHz 25 3.0 80 1.0 40 1.5 ±100ppm or tighter as required. 10pF (or as specified) 100µW 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 Unless specified otherwise. Does not include calibration tolerance. (Frequency stability characteristics follow that of the AT-Cut thickness-shear mode.) 5ppm maximum for frequencies below 40MHz. For tighter tolerances and higher frequencies contact Euroquartz sales. A higher shock version available. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available. Dim. H Glass Lid SM1 SM2 SM3 SM4 SM5 0.63 0.65 0.67 0.65 0.67 Ceramic Thin Glass Lid Lid 0.59 0.61 0.63 0.61 0.63 0.52 0.54 0.56 0.54 0.56 CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance C1 Motional Capacitance L1 Motional Inductance C0 Shunt Capacitance PACKAGING OPTIONS CX14SM 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 CX14SM AT CRYSTALS CX14 - S 'S' if special, custom design. Otherwise leave blank - C Blank = glass lid C = ceramic lid - SM1 - Terminations SM1 = Gold plated * SM2 = Solder plated SM3 = Solder dipped SM4 = Solder plated * SM5 = Solder dipped * * = Lead free 26.0M, Frequency M = MHz 100 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