EURO QUARTZ CX2SM AT CRYSTAL Low Profile Miniature SMD Crystal 9.6MHz to 250MHz FEATURES Designed for surface mount applications, including infrared, vapour phase or epoxy mount techniques Hermetically sealed ceramic package Excellent ageing characteristics Available with glass or ceramic lid Higjh shock and vibration resistance Custom designs available Full Military testing available DESCRIPTION CX2SM AT crystals in leadless ceramic packages are designed for surface mounting on PCB or hybrid substrates. The small footprint, low profile crystal is ideal for a wide range of commercial, industrial, medical and defence/aerospace applications. SPECIFICATION OUTLINE & DIMENSIONS 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): 10.0MHz 60 2.8 32.0MHz 25 6.2 155.52MHz 10 4.0 95 1.4 30 2.3 30 2.3 QualityFactor Q (k): Shunt Capacitance C0 (pF): Calibration Tolerance1: Load Capacitance2: Dim. A B C D E F G H I ±100ppm or tighter as required 20pF for fr. <50MHz 10pF for fr. >50MHz 500µW max. for fr. <50MHz 200µW max. for fr. <50MHz Drive Level: Temperature Stability3 Commercial -10 ~ +60°C: Industrial -40 to +85°C: Military -55 to +125°C: Ageing, first year4: Shock, survival5: Vibration, survival6: Operating Temperature Range Commercial: Industrial: Military: Storage Temperature Range: Maximum Process Temperature: ±50ppm to ±10ppm ±100ppm to ±20ppm ±100ppm to ±30ppm 5ppm max. Better than ±1ppm is available 3,000g, 0.3ms, ½ sine 20g, 10~2000Hz swept sine -10° to +70°C -40° to +85°C -55 to +125°C -55° to +125°C +260°C for 20 seconds Typ. Max. 6.60 6.99 2.39 2.74 see below 0.89 1.14 1.50 1.75 1.27 1.52 2.67 2.92 3.94 4.19 5.33 5.59 Dim. C Glass Lid Ceramic Lid SM1 SM2 SM3 SM4 SM5 1.65 1.70 1.78 1.70 1.78 1.91 1.96 2.03 1.96 2.03 PACKAGING OPTIONS CX2SM AT crystals are available either tray packed (<250pcs) or tape and reel (>250 pieces). 16mm tape, 178mm or 330mm reels (EIA 418). 1. Other tolerances available, contact Euroquartz sales. 2. Unless specified otherwise. 3. Does not include calibration tolerance. The characteristicsof the frequency stability over temperature follow that of the AT thicknessshear mode. 4. 5ppm max. for frequencies below 40MHz For tighter tolerances and higher frequencies contact Euroquartz sales. 5. Higher shock version available. See CX1HGSM 6. Per MIL-STD-202G, Method 204D, Condition D. Random vibration testing also available. CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance C1 Motional Capacitance L1 Motional Inductance C0 Shunt Capacitance HOW TO ORDER CX2SM AT CRYSTALS CX2 - 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 32.0M Frequency M = MHz , 100 / 100 / - / Calibration Tolerance @25°C (in ppm) 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 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