http://cfm.citizen.co.jp/english/product/pr02.html
TUNING FORK CRYSTAL UNIT
(SMD • Ceramic Package)
Donotdesignanypatternsonshadedarea.■FEATURES
7Tuning fork crystal with ceramic packaged type.
7Small & thin packaging and light weight.
7Most appropriate for portable devices and mobile
telecommunications devices.
■SOLDER PAD LAYOUT [mm]
■STANDARD SPECIFICATIONS
CM519
1.35pFTyp.9.0pF,12.5pFf0△f/f0CLTOPRTSTRTMβR1DL△f/f0C0Item Model 32.768kHz
at 25˚C
at 25˚C
25℃±3℃Need to specify your requirement
±20ppm−40℃〜＋85℃−55℃〜＋125℃25℃±5℃−0.034±0.006ppm/℃21μWMax.±3ppmMax.70KΩMax.CM519
1.60.530.1
4.9±0.15（3.95）3.20.10.754-R0.15
1.8±0.151.0Max.
2.91.31.3
2.2
Life-size
■DIMENSION [mm] Internalconnection3000pcs/reel
Nominal Frequency
Frequency Tolerance
Load capacitance
Operating Temperature Range
Storage Temperature Range
Turnover Temperature
Temperature Coefficient
Motional (series) resistance
Level of drive
Aging (first year)
Shunt capacitance
Conditions
RoHS compliant / Pb free