ECS-.327-12.5-17

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 – F REQUENCY .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 @ 25˚C R1 TOPR Q TO TSTG IR Co C1 ∆ f/fo ECX-306/306 I 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 500MΩ min./ DC 100V 1.35 typical 0.003 pF typical ±3 PPM max. @ +25˚C UNITS KHz pF µW PPM KΩ PPM/( ∆ C˚) ˚C °C °C °C MΩ 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 45˚C? 1) Change in T (˚C) = 45 -25 = 20˚C 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 1µW 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 Ω Rd: 330K Ω (As required) C 1 = 2 2pF, C 2 = 2 2pF, 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