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| ECS-31 SERIES LOW FREQUENCY QUARTZ CRYSTALS The ECS-31 Series features the same characteristics as only tuning fork crystals offer. Because of their miniature size they are ideal for portable and communication equipment applications. FEATURES * Miniature size * Cost effective * Long term stability * Excellent shock and vibration characteristics PART NUMBERING GUIDE "EXAMPLE" MANUFACTURER ECS ECS ECS - - - FREQUENCY .400 .400 2.0 - - - LOAD CAPACITANCE 12.5 12.5 12.5 - - - PACKAGE TYPE* 8 13 14 * Package type examples (8=3x8, 13=2x6, 14=1x5) OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS PARAMETERS FREQUENCY RANGE FREQUENCY TOLERANCE FREQUENCY VS. TEMP. CHARAC. TURNOVER TEMPERATURE TEMPERATURE COEFFICIENT OPERATING TEMP. RANGE STORAGE TEMP. RANGE EQUIVALENT SERIES RESISTANCE LOAD CAPACITANCE MOTIONAL CAPACITANCE SHUNT CAPACITANCE CAPACITANCE RATIO DRIVE LEVEL INSULATION RESISTANCE AGING (FIRST YEAR) SHOCK RESISTANCE fo f/f o f/f o Tm T OPR TSTG R1 CL C1 C0 DL IR f/f o 3X8 20KHz ~ 40KHz 30 PPM 2X6 30KHz ~ 150KHz 30 PPM See Drawing +25C typ. 2 -0.034 PPM/C typ. -10 ~ +60 -40 ~ +85 30 ~ 50 (max.) 12.5pF typ. (Customer Specified) 1 ~ 4fF typ. 0.8 ~ 1.7pF typ. 425 ~ 800 typ. 1W max. 500 M min. 5 PPM max. 5 PPM max. 1X5 200KHz 10,000 PPM CONDITIONS KHz @ +25C -10C ~ +60C Varies depending on frequency 10 (max.) C C K pF fF pF W DC 100V15 +25C 3C Conditions will vary depending on frequency Drop test of 3 times on a hard board from 75 cm height or shock test of 3000G x 0.3ms x 1/2 sin wave x 3 directions PACKAGE DIMENSIONS (mm) 1.1 0.45 o 1.5 Max PARABOLIC TEMPERATURE CURVE T (C) -20 -10 0 10 20 30 40 50 -10 -20 -30 -40 60 70 O 3.1 Max. o 0.35 8.2 Max. 10 5.1 Max. 4.3 o 0.2 -50 -60 Figure 1) ECS-31-8 0.7 Figure 3) ECS-31-14 f/f (PPM) o 2.1 Max o 0.26 To determine frequency stability, use parabolic curvature. For example: What is the stability at 45C? 1) Change in T (C) = 45 -25 = 20C 2 2) Change in frequency = -0.04 PPM x (T) 2 = -0.04 PPM x (20) = -16.0 PPM 6.2 Max. 10 Figure 2) ECS-31-13 ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 * 913-782-7787 * 800-237-1041 * FAX 913-782-6991 * WWW.ECSXTAL.COM CRYSTALS 4 CRYSTALS |
Price & Availability of ECS-31
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