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| ECX-306/306I SMD TUNING FORK CRYSTAL Housing for the ECX-306/306I crystal is made from the same thermoplastic that is industry standard for integrated circuits. This ruggedized molded package is excellent for SMD applications. FEATURES * Low profile * Long term stability * Industry standard footprint * Excellent shock resistance * Excellent environmental characteristics * Tape and Reel (3,000 pcs) PART NUMBERING GUIDE "EXAMPLE" ECS - FREQUENCY .327 - LOAD CAPACITANCE 12.5 - PACKAGE TYPE** 17 ** Package Type examples (-17= ECX-306, 17I= ECX-306I) OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS PARAMETERS NOMINAL FREQUENCY LOAD CAPACITANCE DRIVE LEVEL CALIBRATION TOLERANCE EQUIVALENT SERIES RESISTANCE TEMPERATURE COEFFICIENT OPERATING TEMPERATURE RANGE MAX. OPERATING TEMPERATURE RANGE Q FACTOR TURNOVER TEMPERATURE STORAGE TEMPERATURE RANGE INSULATION RESISTANCE SHUNT CAPACITANCE MOTIONAL CAPACITANCE AGING (FIRST YEAR) Fo CL DL @ 25C R1 TOPR Q TO TSTG IR Co C1 f/fo ECX-306/306I 32.768 12.5 Standard (6.0 Optional) 1 max. 20 50 max. -0.040 PPM/C2 max. -10 ~ +60 -40 ~ +85 50,000 min. +25 5 -55 ~ +125 500M min./ DC 100V 1.35 typical 0.003 pF typical 3 PPM max. @ +25C UNITS KHz pF W PPM K PPM/(C) C C C C M pF pF PPM PARABOLIC TEMPERATURE CURVE T (C) -20 -10 0 10 20 30 40 50 -10 60 70 PACKAGE DIMENSIONS (mm) 8.0 Max. #4 #3 #4 #3 8.7 Max. #4 #3 #4 #3 -20 -30 3.8 Max. 3.7 Max. -40 -50 -60 #1 5.5 #2 #1 #2 #1 5.5 #2 #1 #2 f/f (PPM) 2.5 Max. 0.5 0.5 (0.9 Typ ica l) 2.5 Max. 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 0.5 0.5 1.15 Figure 1) ECX-306 - Top, Side and End views with pin connections Figure 2) ECX-306 I - Top, Side and End views with pin connections RECOMMENDED OSCILLATION CIRCUIT Rf Rd 1.9 1.3 C1 C2 In this circuit, low drive level with a maximum of 1W is recommended. If excessive drive is applied, irregular oscillation or quartz element fractures may occur. 1.9 1.3 4.2 1.3 Figure 3) ECX-306/306 I Land Pattern - Top view ELECTRICAL CHARACTERISTICS IC: TC 4069P, Rf: 10M Rd: 330K (As required) C 1 = 22pF, C 2 = 22pF, V DD = 3.0V ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 * 913-782-7787 * 800-237-1041 * FAX 913-782-6991 * WWW.ECSXTAL.COM SMD CRYSTALS 13 SMD CRYSTALS |
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