Model 445 Surface Mount Quartz Crystal FEATURES • Standard 5.0mm x 3.2mm Glass Seal Package • Fundamental Crystal Design • Frequency Range 10 – 50 MHz • Frequency Tolerance, ±20 ppm Standard [other tolerances available] • Frequency Stability, ±30 ppm Standard [other stabilities available] • Operating Temperature to -40°C to +85°C • Tape & Reel Packaging Standard, EIA-481 • RoHS Compliant in Accordance with EU Directive 2005/95/EC - Lead-Free Termination Finish - Exemption 5 for Pb in glass material used for cover attach APPLICATIONS Model 445 is a low cost device used in a wide range of commercial applications including notebooks, computer peripherals, audio visual, Bluetooth and USB interfaces, PDAs, and automotive electronics. ORDERING INFORMATION 445 M OPERATING TEMPERATURE RANGE FREQUENCY IN MHz W = 0°C to +50°C A = -10°C to +60°C C = -20°C to +70°C (standard) I = -40°C to +85°C (standard) M - indicates MHz and decimal point. 3 LOAD CAPACITANCE A = 10 pF B = 13 pF C = 16 pF D = 18 pF FREQUENCY TOLERANCE @ 25°C 2 = ± 20 ppm (standard) 3 = ± 30 ppm STABILITY OVER TEMPERATURE 1 = ± 10 ppm 1 X = ± 15 ppm 2 2 = ± 20 ppm E = 20 pF F = 24 pF G = 30 pF H = 32 pF J = 9 pF K = 8 pF L = 12 pF S = Series Example Part Numbers: 445C23D14M31818 445I23E14M31818 3 = ± 30 ppm (std) 5 = ± 50 ppm 1] Only available with temperature range codes "W" and "A". 2] Only available with temperature range codes "W", "A" and "C". 3] Frequency is recorded with two leading digits before the ‘M’ and 5 significant digits after the ‘M’ (including zeros). Not all performance combinations and frequencies may be available. Contact your local CTS Representative or CTS Customer Service for availability. PACKAGING INFORMATION Device quantity is 1,000 pieces minimum per 180mm reel. 17.5 DIMENSIONS IN MILLIMETERS 2.0 Ø13.5 4.0 8.0 Ø1.50 1.75 1.95 120° Ø60 Ø180 12.0 5.40 Ø21.4 3.5 DIRECTION OF FEED Document No. 008-0360-0 Page 1- 2 www.ctscorp.com Rev. B Model 445 Quartz Crystal ELECTRICAL PARAMETERS ELECTRICAL CHARACTERISTICS VALUE 10 MHz to 50 MHz Fundamental AT-Cut ±20 ppm, ±30 ppm ±10 ppm, ±15 ppm, ±20 ppm, ±30 ppm, ±50 ppm 0°C to +50°C -10°C to +60°C -20°C to +70°C -40°C to +85°C 10 MHz - < 12 MHz 100 Ohms 12 MHz - < 16 MHz 50 Ohms 16 MHz - < 30 MHz 40 Ohms 30 MHz - < 50 MHz 30 Ohms See Ordering Information 5.0 pF Typical, 7.0 pF Maximum 10 µW Min., 100 µW Typ., 300 µW Max. ±3 ppm/yr Typical -40°C to +85°C PARAMETER Frequency Range Operating Mode Crystal Cut Frequency Tolerance @ +25°C Frequency Stability Tolerance (Operating Temperature Range, Referenced to 25°C Reading) Operating Temperature Ranges Equivalent Series Resistance [Maximum] Load Capacitance or Resonance Mode Shunt Capacitance (C0) Drive Level Aging @ +25°C Storage Temperature Range MECHANICAL SPECIFICATIONS MARKING INFORMATION 1. M445 - CTS Model Series. 2. C – CTS. 3. D – Date code. See Table I for codes. 4. XXX – Frequency code. PACKAGE DRAWING M445 CDXXX Frequency Code 120 = 12.00 143 = 14.31818 200 = 20.00 245 = 24.5760 270 = 27.00 130 = 13.00 160 = 16.0000 240 = 24.00 250 = 25.0000 300 = 30.00 NOTES 1. Complete CTS part number, frequency value, date code and manufacturing site code information must appear on reel and carton labels. 2. Termination pads (e4); barrier plating is nickel [Ni] with gold [Au] flash plate. 3. Reflow conditions per JEDEC J-STD-020; 260°C maximum, 10 seconds. SUGGESTED SOLDER PAD GEOMETRY TABLE I – DATE CODE MONTH JAN YEAR FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC M 2001 2005 2009 2013 2017 A B C D E F G H J K L 2002 2006 2010 2014 2018 N P Q R S T U V W X Y Z 2003 2007 2011 2015 2019 a b c d e f g h j k l m 2004 2008 2012 2016 2020 n p q r s t u v w x y z Document No. 008-0360-0 Page 2 - 2 Rev. B