HC35 EUROQUARTZ | Alldatasheet
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EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE THROUGH-HOLE CRYSTALS HC35 CRYSTALS (TO5) Frequency Range: 8.0MHz to 250MHz Oscillation Mode: See table Calibration Tolerance at 25ºC: from ±3ppm Frequency stability over temp: from ±3ppm (see table) Operating Temperature Range: From 0°~+50° to -55°~+125°C Shunt Capacitance (C0): 4pF maximum (See table) Load Capacitance (CL): Series or from 8pF to 32pF (Customer specified CL) Motional Capacitance (C1): See table Effective Series Resistance: See table Ageing: ±2ppm max 1st year, ±1ppm typical per year after Drive level: 100uW maximum Shock: 100g/6ms Vibration: 10g/1.5mm, 10~500Hz, 3 axis Holder: Resistance-weld, hermetic seal Supply format: Bulk pack
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HC35 crystal part numbers are derived as follows: Example: 16.000MHz HC35/10/20/10/30pF/ATF Frequency Calibration Tolerance at 25°C ±ppm Temperature Stability ±ppm Operating Temperature Range lower figure of temp. range ‘20’ = -20°~+70°C Circuit Condition (CL in pF or SERIES) Mode - ATF (AT-Cut, Fundamental) - AT3 (AT-Cut, 3rd overtone) - AT5 (AT-Cut, 5th overtone) - AT7 (AT-Cut, 7th overtone) - AT9 (AT-Cut, 9th overtone) Operating Temp. °C Temperature Stability (ppm) FREQUENCY STABILITY OVER TEMPERATURE 0° to +50° ü ü ü ü ü ü ü ü -10° to +60° ü ü ü ü ü ü ü ü -20° to +70° X ü ü ü ü ü ü ü -30° to +80° X X X ü ü ü ü ü -40° to +90° X X X ü ü ü ü ü -55° to +105° X X X X X ü ü ü -55° to +125° X X X X X X ü ü Wide frequency range Small profile, low-mass package Close tolerances easily achieved Fully customisable specification Industry-standard package HC35 crystals are used in communications, aerospace and defence applications The crystal blank used in HC35 packages is capable of being manufactured to close tolerances and is readily produced with custom frequencies and specifications. ±50 8.0~9.9 AT Fund. 80 2.5 10.0~10.99 AT Fund. 60 3.0 11.0~12.9 AT Fund. 40 4.0 13.0~45.0 AT Fund. 25 4.0 30.0~50.0 AT 3rd OT 40 4.0 50.1~100.0 AT 5th OT 50 4.0 80.0~200 AT 7th OT 70 4.0 150~250 AT 9th OT 120 4.0 Frequency (MHz) Crystal Cut Osc. Mode ESR (max) (Ohms) OSCILLATION MODE, ESR & SHUNT CAPACITANCE (pF) MOTIONAL CAPACITANCE (C1)