For Automotive Electronics SURFACE MOUNT TYPE CRYSTAL UNITS / NX8045GB These surface mount crystal units are ideally suited for clock signal generating sources for CPUs for power trains and safety control devices requiring extremely high reliability as an electronic part used in a car. This crystal unit can meet requirement starting from a low frequency 5MHz. ■ Features 8 This crystal unit exhibit stabilized startup characteristic even under extremely severe environmental conditions. 8 This crystal unit is provided with superior environmental performance including heat resistance, vibration resistance, impact resistance, etc. 8 Products that are lead-free. These can meet the requirements of re-flow profiling using lead-free solder. ■ Specification Type NX8045GB 5 ~ 40MHz Fundamental Overtone ± 50 × 10-6 Frequency Tolerance (25±3°C) Temperature Characteristics (in reference to +25˚C) ± 180 × 10-6 –40 ~ +150˚C Operating Temperature Range Equivalent Series Resistance 5 ~ 8MHz : 300 Ω max, 8 ~ 10MHz : 220 Ω max, 10 ~ 40MHz : 150 Ω max 10 µW (500 µW max) Drive Level Standard Load Capacitance 8pF –40 ~ +150˚C Operable Temperature Range Typical Frequency (MHz) Fundamental 5.0 8.0 10.0 12.0 14.0 15.0 16.0 18.0 20.0 24.0 ■ Dimensions (mm) 8.0 ±0.2 1.8 ±0.2 4.5 ±0.2 Internal connections (Top View) 1.5 2.0 3.0 Reference land pattern 4.0 9.0 47 CRYSTAL UNITS Item Frequency Range