EURO QUARTZ HC51 and HC48 Crystals 18.4 x 9.3 x 19.7mm Leaded Crystal 100.0kHz to 70.0MHz Low frequencies with minimal ESR Clost tolerances available Customizable specification Industry-standard package DESCRIPTION OUTLINE & DIMENSIONS HC51 crystals are long-established standard crystals in the industry. Basic HC51 crystals supply low frequencies with low ESR at low cost. HC48 crystals are a package variant with larger diameter leads for socket mounting. SPECIFICATION Frequency Range: 100.0kHz to 70.0MHz (See table for crystal cut and ESR) From ±10ppm to ±100ppm From ±10ppm to ±100ppm (See table) From 8pF to 50pF or Series 1mW maximum 9pF maximum ±3ppm maximum in first year ±1ppm thereafter RoHS Compliant* Calibration Tolerance: Frequency Stability over Temp: Load Capacitance: Drive Level: Static Capacitance (C0): Ageing: RoHS Status: Holder Types HC51: Two lead standard HC48: 1.27mm leads for socket use * If required, non-RoHS Compliant parts may be specified. Check with Euroquartz technical sales. ESR & OSCILLATION MODE Frequency Range 100.0kHz ~ 890kHz 890kHz ~ 1.8432MHz 1.8432 ~2.5MHz 2.5 ~ 3.5MHz 3.5 ~ 7.0MHz 7.0 ~ 12.0MHz 12.0 ~ 24.0MHz 9.0 ~ 30.0MHz 15.0 ~ 70.0MHz PART NUMBER FORMAT Crystal Cut Oscillation Mode ESR Ω Max. SL-Fundamental AT-Fundamental AT-Fundamental AT-Fundamental AT-Fundamental AT-Fundamental AT-Fundamental AT-3rd Overtone AT-5th Overtone 3000 800 350 200 100 40 20 20 20 Example: 1.8432MHz HC51/50/50/-10+60/30pF Nominal Frequency Package HC51 or HC48 Calibration tolerance at 25°C (±ppm) Temp. stability over temp. range (±ppm) Operating Temp. Range (- and +°C) Load Capacitance (CL) in pF or SR = Series STABILITY OVER TEMPERATURE RANGE (AT-CUT CRYSTALS) Temp. Range °C 0~+50 -10~+60 -20~+70 -30~+80 -40~+85 -55~+125 Stability ppm ±7.5 ±10 ±15 ±20 ±30 ±50 ±100 ü ü X X X X ü ü ü X X X ü ü ü X X X ü ü ü ü X X ü ü ü ü ü X ü ü ü ü ü ü ü ü ü ü ü ü (ü= Available, X = Not available) EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk