ECX-26X

ECX-26X/ECX-15X 32.768 KHz SMD TUNING FORK CRYSTAL The miniature ECX-26X and the sub-miniature ECX-15X are compact, cost effective SMD tuning fork crystals. The slimline molded package requires less space than other SMD tuning fork crystals. FEATURES • Cost effective • Low profile • RoHS Compliant w/exemption for Pb in high temp solder • Tape & Reel packaging PART NUMBERING GUIDE “EXAMPLE” M ANUFACTURER ECS – FREQUENCY (32.768 MHz) . 327 – LOAD CAPACITANCE* 1 2.5 – PACKAGE TYPE 2 6X * Package type examples (26X=ECX-26X, 27X=ECX-15X) Sample Part Number: ECS-.327-12.5-26X OPERATING CONDITIONS/ELECTRICAL CHARACTERISTICS PARAMETERS FREQUENCY RANGE FREQUENCY TOLERANCE LOAD CAPACITANCE DRIVE LEVEL EQUIV. SERIES RESISTANCE Q-FACTOR TURNOVER TEMPERATURE TEMPERATURE COEFFICIENT SHUNT CAPACITANCE CAPACITANCE RATIO OPERATING TEMP RANGE STORAGE TEMP RANGE INSULATION RESISTANCE AGING (FIRST YEAR) MOTION CAPACITANCE CONDITIONS FO ∆ f/fo Optional CL available DL R1 Q +20 β CO T OPR T STG @ 100V DC ±15V @ +25 ˚ C ±3 ˚ C C1 -20 -40 500M 0.0025 MIN ECX-26X TYP 32.768 12.5 1.0 50K 70K +25 -0.35 0.9 360 +30 -0.04 +20 70K +25 -0.35 0.95 380 MAX ±20 12.5 1.0 55K +30 -0.04 MIN ECX-15X TYP 32.768 MAX ±20 UNITS KHz PPM pF µW Ω Q ˚C PM/ ˚ C pF ˚C ˚C Ω PPM PF +70 +125 ±3 -20 -40 500M +0.0025 +70 +125 ±3 PACKAGE DIMENSIONS (mm) 8.95 ±0.05 7.95 ±0.05 RECOMMENDED OSCILLATION CIRCUIT #2 Rf PARABOLIC TEMPERATURE CURVE T (˚C) -20 -10 0 10 20 30 40 50 -10 -20 60 70 2.25 ±0.05 2.05 ±0.05 #2 #3 #3 #1 #1 2.05 ±0.05 1.55 ±0.05 Rd -30 -40 0.75 0.6 0.75 0.85 #2 #3 #1 #2 #3 #1 -50 C1 C2 -60 0.9 0.85 f/f (PPM) 0.75 0.75 0.75 0.75 Figure 1) ECX-26X Top, Side Bottom & End views Figure 3) ECX-15X Top, Side Bottom & End views 0.85 0.5 0.85 0.95 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 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. 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 (∆T)2 = -0.04 PPM x (20)2 = -16.0 PPM 0.95 0.7 2.7 0.8 2.2 0.7 0.85 7.4 0.85 0.85 0.6 0.6 6.4 0.85 Figure 2) ECX-26X Land Pattern Figure 4) ECX-15X Land Pattern ECS, INC. INTERNATIONAL 1105 S. RIDGEVIEW, OLATHE, KS 66062 • 913-782-7787 • 800-237-1041 • FAX 913-782-6991 • WWW.ECSXTAL.COM SMD CRYSTALS 14 SMD CRYSTALS