63 crystal units crystal units for car electronics (at-51 series) these 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. features 8 high stability under strict conditions in terms of stable start-up characteristics, heat resistance, thermo-cycle resistance and vibration resistance. for further details, please contact us. 8 surface mount crystal unit that retains high-level electrical characteristics and reliability due to the resin seating attached to the at-51 type crystal unit. specification type nominal frequency & equivalent series resistance overtone frequency tolerance (overall) operating temperature range drive level standard load capacitance at-51 series nominal frequency (mhz) equivalent series resistance (w) 4 180 6 120 880 10 70 12 60 16 50 20 50 fundamental ?000 10 -6 , ?50 10 -6 ?0 ~ +125? 50? (1000? max) 16pf measuring circuit: ci meter
64 crystal units dimensions 10.10max 5.08max 20 1 ?.43 3.70max 11.05max 4.65max 4.88 0.20 +0.05 ?.03 (mm) at-51 11.5max 5.2max 1.2 (mm) at-51ad 11.5max 5.0max 1.0 (mm) at-51cd tape reel taping dimensions 1.5 0 +0.1 8.0 2.2 2.0 330 13 100 (mm) (mm)
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