TF20L Series Tuning Fork Crystal FEATURES • • • • • • • • • • 32.7680 kHz Frequency Reference Low Profile Package Height – 0.38mm Maximum Package Size 2.0mm x 1.2mm Tuning Fork Crystal Design Hermetic Ceramic Package Frequency Tolerance, ±20 ppm Standard 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 TF20L crystal series is ideal for use in a wide range of communication equipment, notebooks, computer peripherals, audio visual, Bluetooth and other wireless applications, USB interfaces, PDAs and automotive electronics. ORDERING INFORMATION TF 20L 3 2 K 7 6 8 0 PACKAGING OPTIONS PACKAGE SIZE 20L = Low Profile 2.0mm x 1.2mm x 0.38mm T - 1k pcs./reel R - 3k pcs./reel U - 5k pcs./reel FREQUENCY TOLERANCE @ 25°C 2 = ± 20 ppm [standard] FREQUENCY IN kHz K - indicates kHz and decimal point. LOAD CAPACITANCE 1 P = 12.5 pF [standard] J = 9 pF 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. PACKAGING INFORMATION [reference] Factory may package reels in quantities of 1k pcs., 3k pcs. or 5k pcs. DIMENSIONS IN MILLIMETERS 4.0 4.0 Ø1.50 1.75 0.8 8.0 2.25 1.45 DIRECTION OF FEED Document No. 008-0417-0 Page 1- 3 www.ctscorp.com Rev. C TF20L Series Tuning Fork Crystal ELECTRICAL PARAMETERS ELECTRICAL CHARACTERISTICS TF20L [2.0 x 1.2 x 0.38 mm] PARAMETER Frequency Operating Mode Frequency Tolerance * 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 @+25°C TA TM CL Δf/f0 DL C0 C1 R1 Ri TSTR ±5°C Standard @+25°C, 1st year @1 MHz +100Vdc ±15Vdc 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 7.0 100 500 -55 +125 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 Frequency stability [ppm] is determined using parabolic curve, Δf = Temperature Coefficent(TA-TM)2. -40 Δf/f [ppm] -50 Ex. Find frequency stability at TA = 45°C Δf = -0.030(45-25)2 Δf = -0.030(20)2 Δf = -12.0 ppm -60 -70 -80 -90 -100 -110 -120 -130 Temperature [°C] Document No. 008-0417-0 Page 2 - 3 Rev. C TF20L Series Tuning Fork Crystal MECHANICAL SPECIFICATIONS TF20L PACKAGE DRAWING TF2LD MARKING INFORMATION 1. TF2L – Truncated 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. 008-0417-0 Page 3 - 3 Rev. C