SM20S Series Low Frequency Crystal November 2018 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 (2011/65/EC) and WEEE (2002/96/EC) directives. Pletronics Inc. guarantees the device does not contain the following: Cadmium, Hexavalent Chromium, Lead, Mercury, PBBs, PBDEs W eight 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 2018 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 November 2018 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 oo Turn Over Temperature 20 30 C Nominal is 25 C o2 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 oo 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 Typical Performance: www.pletronics.com 425-776-1880 2