ECX-205X/206X SMD TUNING FORK CRYSTAL Housing for the ECX-205X/206X 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 • Tape and Reel (2,000 pcs) • PbFree/RoHS Compliant Discontinued PART NUMBERING GUIDE “EXAMPLE” MANUFACTURER ECS ECS – – FREQUENCY .327 .327 – – LOAD CAPACITANCE 12.5 12.5 PACKAGE TYPE* 11X 6X – – * Package Type examples (11X= ECX-205X, 6X= ECX-206X) 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) ECX-205X/206X 32.768 12.5 Standard (6.0 Optional) 1.0 max. ±20 50 max. -0.040 PPM/˚C2 max. -10 ~ +60 -40 ~ +85 50,000 min. +25 ± 5 -55 ~ +125 500M Ω min./ DC 100V 2.0 typical 0.003 pF typical ±3 PPM max. @ +25˚C Fo CL DL @ +25˚C R1 TOPR Q TO T STG IR Co C1 Δf/fo UNITS KHz pF µW PPM KΩ PPM/(ΔC˚) ˚C °C °C °C MΩ pF pF PPM PACKAGE DIMENSIONS (mm) 10.41 RECOMMENDED OSCILLATION CIRCUIT 0.2 Min. 3.4 2.29 PARABOLIC TEMPERATURE CURVE T (˚C) Rf -20 -10 0 10 20 30 40 50 60 70 -10 2.54 0.51 -20 4.2 Rd -30 -40 Figure 1) ECX-205X/206X - Side and End views -50 C1 C2 -60 0.8 1.5 f/f (PPM) 1.5 ELECTRICAL CHARACTERISTICS IC: TC 4069P Rf: 10MΩ Rd: 330KΩ (As required) C 1 = 22pF, C 2 = 22pF V DD = 3.0V 2.7 5.0 2.7 Figure 2) ECX-205X/206X Land Pattern- Top view #4 #3 #4 #3 #1 #2 #1 #2 Figure 3) ECX-205X Pin Connection - Top view 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) Change in frequency = -0.04 PPM x Δ T) 2 = -0.04 PPM x (20) 2 = -16.0 PPM 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. Figure 4) ECX-206X Pin Connection - Top view ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM SMD CRYSTALS 11 SMD CRYSTALS