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CX7SM Datasheet(PDF) 1 Page - EUROQUARTZ limited |
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CX7SM Datasheet(HTML) 1 Page - EUROQUARTZ limited |
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1 / 1 page EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk EURO QUARTZ DESCRIPTION CX7SM crystals are leadless devices designed for surface mounting. The ultra-miniature crystals are hermetically sealed in a rugged, ceramic package. The crystals have a very low profile and small area. OUTLINE & DIMENSIONS FEATURES Designed for infrared, vapour phase or epoxy mounting Low profile, (<1.2mm) hermetically sealed ceramic package Excellent ageing characteristics High shock and vibration resistance Full military testing available Available with glass or ceramic lid Custom designs available CX7SM CRYSTAL Ultra-Miniature SMD Crystal 14MHz to 250MHz SM1 1.14 1.27 SM2 1.17 1.30 SM3 1.22 1.35 Glass Lid Ceramic Lid Dim. H HOW TO ORDER CX7SM AT CRYSTALS CX7 - S - C - SM1 - 49.0M, 50 / 50 / - / I 'S' if special, custom design. Otherwise leave blank Blank = glass lid C = ceramic lid Terminations SM1 = Gold plated SM2 = Solder plated SM3 = Solder dipped Frequency M = MHz Calibration Tolerance @25°C (in ppm)* Temp. Range C = -10° ~ +70°C I = -40° ~ +85°C M = -55° ~ +125°C S = Customer specified Frequency Stability over Temp. Range (in ppm)* *Alternative 'total' tolerance (in ppm) CRYSTAL EQUIVALENT CIRCUIT R1 Motional Resistance L1 Motional Inductance C1 Motional Capacitance C0 Shunt Capacitance PACKAGING OPTIONS CX7SM crystals are available either tray packed (<250pcs) or tape and reel (>250 pieces). 16mm tape, 178mm or 330mm reels (EIA 418). Specifications stated are typical at 25°C unless otherwise indicated. Specifications may change without notice. 49.0MHz Motional Resistance R1: 14kΩ Motional Capacitance C1: 2.4fF Quality Factor Q: 100,000 Shunt Capacitance: 0.8pF SPECIFICATION 1. Other tolerances available, as low as ±5ppm. 2. Does not include calibration tolerance. (Frequency stability characteristics follow that of the AT-Cut thickness-shear mode.) 3. Higher shock version available. Standard Calibration Tolerance1: ±100ppm to ±1000ppm Load Capacitance: 10pF (or as specified) Drive Level: 200µW maximum Frequency Stability2 -10° to +70°C: ±50ppm to ±10ppm -40° to +85°C: ±100ppm to ±35ppm -55° to +125°C: ±100ppm to ±50ppm Ageing First Year: ±5ppm maximum Shock, Survival4: 5000g peak, 0.3ms, ½ sine Vibration, Survival: 20g rms, 10~2000Hz random Operating Temperature Range: -10°C to +70°C (Commercial) -40°C to +85°C (Industrial) -55°C to +125°C (Military) Storage Temperature Range: -55° to +125°C Maximum Process Temperature: +260°C for 20 seconds TERMINATIONS - PLATING SM1 Gold Plated SM2 Nickel, Solder Plated SM3 Nickel, Solder Plated and Solder Dipped Designation Termination |
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