SM20S Series Low Frequency Crystal December 2015 • The Pletronics’ SM20S Series is a miniature • 32.768 KHz only surface mount crystal. • 3.8 x 8 mm 4 pad • The package is ideal for automated surface • XY Cut Crystal mount assembly and reflow practices. • Tape and Reel packaging Pletronics Inc. certifies this device is in accordance with the RoHS (2002/95/EC) and WEEE (2002/96/EC) directives. Pletronics Inc. guarantees the device does not contain the following: Cadmium, Hexavalent Chromium, Lead, Mercury, PBB’s, PBDE’s Weight of the Device: 0.118 grams Moisture Sensitivity Level: 1 As defined in J-STD-020C Second Level Interconnect code: e3 Part Number: SM20S - 32.768K - 6PF -XX Internal code or blank Load Capacitance Blank = 12.5pF 6 = 6pF Nominal Frequency in KHz Model Number Reliability: Environmental Compliance Parameter Condition Mechanical Shock MIL-STD-883 Method 2002, Condition A Vibration MIL-STD-883 Method 2007, Condition A Solderability MIL-STD-883 Method 2003 Thermal Shock MIL-STD-883 Method 1011, Condition A Product informatin is current as of publication date. The product conforms Copyright © 2005, 2006 Pletronics Inc. to specifications per the terms of the Pletronics standard warranty. Production processsing does not necesarily include testing of all parameters. SM20S Series Low Frequency Crystal December 2015 Electrical Specification: Item Min Max Unit Condition Frequency 32.768 kHz o Calibration Frequency Tolerance -20 +20 ppm at +25 C Equivalent Series Resistance -- 50K Ohms Drive Level -- 1.0 uW o o Turn Over Temperature 20 30 C Nominal is 25 C o 2 Temperature Coefficient -0.035 ppm/ C typical Q Factor 50000 -- Q Shunt Capacitance 1.0 pF Pin to Pin Capacitance, typical Motional Capacitance 1.9 fF typical o o Aging (for first year) -5 +5 ppm/Yr at 25 C + _ 3 C Insulation Resistance 500M -- Ohms at 100V DC Crystal Cut XY Cut o Operating Temperature Range -40 +85 C o Storage Temperature Range -55 +125 C Shock Resistance -10 +10 ppm Vibration Resistance -5 +5 ppm Reflow Resistance -5 +5 ppm XY Crystal Frequency versus Temperature 0 Typical Performance: -20 -40 -60 -80 -100 -120 -140 -160 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 Temperature (C) www.pletronics.com 425-776-1880 2 Deviation (ppm) SM20S Series Low Frequency Crystal December 2015 Mechanical: Dimensions specified are typical Package Labeling Label is 1" x 2.6" (25.4mm x 66.7mm) Label is 1" x 2.6" (25.4mm x 66.7mm) Font is Courier New Font is Arial Bar code is 39-Full ASCII Part Marking: • Marking consists of an internal manufacturing date code • Orientation of marking may be mixed on the tape • Traceability of part’s specification is lost once removed from reel Layout and application information • Trace lengths to the crystal should be kept as short as possible. • The crystal connections are sensitive to noise. www.pletronics.com 425-776-1880 3 SM20S Series Low Frequency Crystal December 2015 Reflow Cycle (typical for lead free processing) 260°C Maximum 10 Seconds Maximum 250 215°C±10°C 200 175°C±10°C 150 100 Approximately 50 Seconds 120 to 160 Seconds Allowed rate of temperature change Maximum 4°C per second The part may be reflowed 2 times without degradation. Tape and Reel: available for quantities of 3000 per reel Constant Dimensions Table 1 T1 Tape D1 S1 T D0 E1 P0 P2 Max Size Min Min Max 8mm 1.0 2.0 + _0.05 1.5 12mm 1.5 1.75 4.0 0.6 0.25 0.1 +0.1 + _0.1 + _0.1 16mm 1.5 2.0 -0.0 + _0.1 24mm 1.5 Variable Dimensions Table 2 Tape B1 E2 Min F P1 T2 W Ao, Bo Size Max Max Max & Ko 16 mm 12.1 14.25 5.5 + _0.1 8.0 + _0.1 1.2 12.3 Note 1 Note 1: Embossed cavity to conform to EIA-481-B Dimensions in mm Not to scale REEL DIMENSIONS A inches 7.0 10.0 13.0 mm 177.8 254.0 330.2 B inches 2.50 4.00 3.75 mm 63.5 101.6 95.3 Tape Width C mm 13.0 +0.5 / -0.2 D mm 16.4 16.4 16.4 16.0 +2.0 +2.0 +2.0 -0.0 -0.0 -0.0 mm --- --- 24.4 24.0 +2.0 -0.0 mm --- --- 32.4 32.0 +2.0 -0.0 Reel dimensions may vary from the above www.pletronics.com 425-776-1880 4 Temperature (°C) SM20S Series Low Frequency Crystal December 2015 IMPORTANT NOTICE Pletronics Incorporated (PLE) reserves the right to make corrections, improvements, modifications and other changes to this product at anytime. PLE reserves the right to discontinue any product or service without notice. Customers are responsible for obtaining the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to PLE’s terms and conditions of sale supplied at the time of order acknowledgment. PLE warrants performance of this product to the specifications applicable at the time of sale in accordance with PLE’s limited warranty. Testing and other quality control techniques are used to the extent PLE deems necessary to support this warranty. Except where mandated by specific contractual documents, testing of all parameters of each product is not necessarily performed. PLE assumes no liability for application assistance or customer product design. Customers are responsible for their products and applications using PLE components. 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Resale of PLE products or services with statements different from or beyond the parameters stated by PLE for that product or service voids all express and implied warranties for the associated PLE product or service and is an unfair or deceptive business practice. PLE is not responsible for any such statements. Contacting Pletronics Inc. Pletronics Inc. Tel: 425-776-1880 th 19013 36 Ave. W, Suite H Fax: 425-776-2760 Lynnwood, WA 98036-5761 USA E-mail: ple-sales@pletronics.com URL: www.pletronics.com Copyright © 2005, 2006, Pletronics Inc. www.pletronics.com 425-776-1880 5