TF20 Series Tuning Fork Crystal FEATURES • • • • • • • • • 32.7680 kHz Frequency Reference Package Size 2.0mm x 1.2mm Tuning Fork Crystal Design Hermetic Ceramic Package Frequency Tolerance, ±20 ppm Standard [±10 ppm, ±30 ppm and ±50 ppm available] Frequency Temperature Coefficient, -0.030ppm/°C2 Operating Temperature, -40°C to +85°C Standard Tape & Reel Packaging, EAI-481-2 RoHS/Green Compliant (6/6) APPLICATIONS The TF20 crystal series is ideal for use in a wide range of communication equipment, measurement equipment, industrial applications, automotive electronics, wireless communications, PDAs, mobile phones and notebooks. ORDERING INFORMATION TF 2 0 3 2 K 7 6 8 0 PACKAGE SIZE FREQUENCY IN kHz 20 = 2.0mm x 1.2mm K - indicates kHz and decimal point. FREQUENCY TOLERANCE @ 25°C 1 2 3 5 = = = = ± ± ± ± 10 20 30 50 1 LOAD CAPACITANCE ppm ppm [standard] ppm ppm P = 12.5 pF [standard] J = 9 pF Example Part Numbers: TF202P32K7680 TF202J32K7680 1] Frequency is recorded with two leading digits before the ‘K’ and 4 significant digits after the ‘K’ (including zeros). Not all performance combinations and frequencies may be available. Contact your local CTS Representative or CTS Customer Service for availability. Document No. 008-0353-0 Page 1- 3 www.ctscorp.com Rev. B TF20 Series Tuning Fork Crystal ELECTRICAL CHARACTERISTICS ELECTRICAL PARAMETERS PARAMETER Frequency Operating Mode Frequency Tolerance @ +25°C * Frequency Temperature Coefficient Frequency Stability Operating Temperature Range Turnover Temperature Load Capacitance * Aging Drive Level Shunt Capacitance Motional Capacitance Series Resistance Insulation Resistance Storage Temperature Range SYMBOL f0 Δf/f0 Δf/fM CONDITIONS TA TM CL Δf/f0 DL C0 C1 R1 Ri TSTR MIN TYP MAX 32.7680 Flexural Mode [Tuning Fork] 20 -0.030 ±0.01ppm/°C2 See Figure 1 -40 +85 +25 12.5 3.0 0.1 0.5 7.0 7.0 90 500 -55 +125 ±5°C Standard @+25°C, 1st year @1 MHz +100Vdc ±15Vdc UNIT kHz ± ppm °C °C pF ± ppm µW pF fF k Ohms M Ohms °C * See Ordering Information for available options. FIGURE 1 PARABOLIC TEMPERATURE CURVE 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 -10 -20 -30 -40 Frequency stability [ppm] is determined using parabolic curve, Δf = Temperature Coefficent(TA-TM)2. Δf/f [ppm] -50 -60 Ex. Find frequency stability at TA = 45°C Δf = -0.030(45-25)2 Δf = -0.030(20)2 Δf = -12.0 ppm -70 -80 -90 -100 -110 -120 -130 Temperature [°C] PACKAGING INFORMATION Per standard EIA-418. Device quantity is 3,000 pieces per 180mm reel. DIMENSIONS IN MILLIMETERS 4.0 9.0 4.0 Ø1.50 1.75 2.0 Ø13.5 0.8 120° 8.0 2.25 Ø60 1.45 Ø180 Ø21.4 DIRECTION OF FEED Document No. 008-0353-0 Page 2 - 3 Rev. B TF20 Series Tuning Fork Crystal MECHANICAL SPECIFICATIONS TF20 PACKAGE DRAWING TF20D MARKING INFORMATION 1. TF20 - CTS Model Series. 2. D – Date code. See Table I for codes. 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 SUGGESTED SOLDER PAD GEOMETRY (0.6) (0.6) (0.8) 0.024 0.031 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, 20 seconds. 4. MSL = 1. 0.024 (1.1) 0.043 Key: (mm) inch Document No. 008-0353-0 Page 3 - 3 Rev. B