“X3215” series 3.2x1.5x0.8 mm 32.768 KHz
Tuning Fork Surface Mount Crystal
MERCURY
Since 1973
MERCURY Page 2 of 2 Date: Aug. 1, 2007 Rev. 1
f /
∆
f (ppm
)
Precision time piece in miniature ceramic package for SMD mounting.
100% RoHS compliant and lead-free product.
Low aging. High shock and vibration resistant.
Applications include real-time clocks, battery operated devices.
GENERAL SPECIFICATIONS
FREQUENCY TEMPERATURE CHARACTERISTIC CURVE
by curve by calculation
Frequency deviation at one particular temperature (Tx) with
respect to the frequency at +25°C is
∆f
/f (ppm) = -0.04 * (Tx – 25)
2
Example: at +60°C, the frequency drifts -49 ppm.
∆f /f (ppm) = -0.04*(60-25)
2
= - 49 ppm
Please order either X3215-32.768K-9P or X3215-32.768K-12.5P ": Please specify
"
X3215
— 32.768K — 9P
n o p
n: Crystal package prefix ; o: Frequency: 32.768 KHz; p: Load Capacitance (CL): 9P for 9 pF
load capacitance; 12.5P for 12.5 pF load capacitance.
MERCURY www.mercury-crystal.com
Taiwan: TEL (886)-2-2695-7099, FAX (886)-2-2695-7473, e-mail: sales-tw@mercury-crystal.com
U.S.A.: TEL (1)-909-466-0427, FAX (1)-909-466-0762, e-mail: sales-us@mercury-crystal.com
Mercury Part No.
X3215-32.768K-12.5P or X3215-32.768K-9P
Frequency 32.768KHz
Crystal Cut X-CUT
Mode of Oscillation Fundamental mode
Turnover Temperature 25°C ±5°C
Frequency Tolerance at 25°C ±20ppm max. with drive level at 0.1 uW
Frequency vs. Temperature -0.04 ppm± 0.008 ppm/°C
2
max. Parabolic
Equivalent Series Resistance 65 KΩ typical; 70 KΩ max. with drive level at 0.1 uW
Shunt Capacitance (Co) 1.6 pF typical; 2.0 pF max.
Motional Capacitance (C1) 3.6 fF typical
Load Capacitance (CL) 9 pF or 12.5pF
Drive Level 0.1 μW typical; 1.0 u W max.
Aging at 25°C ±3 ppm / year max.
Insulation Resistance 500 MΩ min. at 100 V±15 V DC
Packaging 8 mm tape. 4 mm pitch, 180 mm reel, 3000 pcs per reel.
HOW TO ORDE
