THROUGH-HOLE CRYSTALS HC35 CRYSTALS (TO5) OUTLINES AND DIMENSIONS DESCRIPTION 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. FEATURES Wide frequency range Small profile, low-mass package Close tolerances easily achieved Fully customisable specification Industry-standard package GENERAL SPECIFICATION Frequency Range: Oscillation Mode: Calibration Tolerance at 25ºC: Frequency stability over temp: Operating Temperature Range: Shunt Capacitance (C0): Load Capacitance (CL): Motional Capacitance (C1): Effective Series Resistance: Ageing: Drive level: Shock: Vibration: Holder: Supply format: 8.0MHz to 250MHz See table from ±3ppm from ±3ppm (see table) From 0°~+50° to -55°~+125°C 4pF maximum (See table) Series or from 8pF to 32pF (Customer specified CL) See table See table ±2ppm max 1st year, ±1ppm typical per year after 100uW maximum 100g/6ms 10g/1.5mm, 10~500Hz, 3 axis Resistance-weld, hermetic seal Bulk pack OSCILLATION MODE, ESR & SHUNT CAPACITANCE Frequency (MHz) Crystal Cut Osc. Mode 8.0~9.9 10.0~10.99 11.0~12.9 13.0~45.0 30.0~50.0 50.1~100.0 80.0~200 150~250 AT Fund. AT Fund. AT Fund. AT Fund. AT 3rd OT AT 5th OT AT 7th OT AT 9th OT ESR (max) (Ohms) 80 60 40 25 40 50 70 120 MOTIONAL CAPACITANCE (C1) C0 (pF) 2.5 3.0 4.0 4.0 4.0 4.0 4.0 4.0 FREQUENCY STABILITY OVER TEMPERATURE Temperature Stability (ppm) Operating Temp. °C ±3 ±5 ±7 ±10 ±20 ±25 ±30 ±50 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 PART NUMBER GENERATION HC35 crystal part numbers are derived as follows: Example: 16.000MHz HC35/10/20/10/30pF/ATF Frequency Package = HC35 Calibration Tolerance at 25°C ±ppm Temperature Stability ±ppm Operating Temperature Range lower figure of temp. range e.g. ‘10’ = -10°~+60°C ‘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) EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 1460 230000 Fax: +44 1460 230001 email: [email protected] web: www.euroquartz.co.uk