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 2011/65/EU - Lead-Free Termination Finish - Exemption 7(c)-I, Electrical and electronic components containing lead [Pb] in glass 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 E = 20 pF F = 24 pF G = 30 pF H = 32 pF J = 9 pF K = 8 pF L = 12 pF S = Series STABILITY OVER TEMPERATURE 1 = ± 10 ppm 1 X = ± 15 ppm 2 2 = ± 20 ppm 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 [Reference] Factory may package reels in quantities of 1k pcs. or 3k pcs. Reel size is 180mm. Document No. 008-0360-0 Page 1- 2 www.ctscorp.com Rev. C 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. Reference CTS document 016-1454-01. PACKAGE DRAWING M445 CDXXX 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. 4. MSL – 1. 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. C