SURFACE-MOUNT CRYSTALS
MF CRYSTALS
6mm x 3.5mm SMD
DESCRIPTION
MF crystals are ultra-miniature surface-mount mount crystals. Produced
with ceramic substrate and hermetically-sealed metal lid the compact size
and low mass make this an ideal crystal for high-density applications.
OUTLINES AND DIMENSIONS
FEATURES
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Ultra miniature size: 6.0mm x 3.5mm x 1.0mm height
Gold-plated ceramic base with metal seam-welded lid
Extremely low ageing
High shock and vibration resistance
Ideal for PDAs, GPS, PCMCIA and hand-held equipment
GENERAL SPECIFICATION
Frequency Range
AT-Cut Fundamental:
AT-Cut 3rd Overtone:
Calibration Tolerance at 25ºC*:
Frequency stability over temp**.
Range -20° to +70°C:
Range -30° to +85°C:
Storage Temperature:
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Reflow Soldering:
12MHz to 50.0MHz
40.0MHz to 100.0MHz
±10ppm, ±20ppm or ±30ppm
±5ppm, ±10ppm or ±30ppm
±10ppm
-40°~+85°C
2pF to4pF typical, 5pF maximum
Series or 10pF to 32pF
(Customer specified CL)
<±3ppm per year at +25°C
100mW max
10s maximum at 260°C two times
or 180s at 230°C, once.
Ceramic base, metal lid,
hermetic seal
16mm EIA tape and reel
3000 pieces per reel
PART NUMBER GENERATION
MF crystal part numbers are derived as follows:
Example:
16.000MHz
MF/ 10/50/10/30pF/ATF
Frequency
Package - MF
Calibration Tolerance at 25°C
Holder:
(in ±ppm)
Temperature Stability
Packaging:
(in ±ppm)
Operating Temperature Range
Notes:
(lower figure of
* Calibration Tolerance of ±5ppm at 25°C is available
temperature range)
** Tighter tolerance, and lower ESR parameters are available, check with
Circuit Condition
Euroquartz technical sales.
(CL in pF or SERIES)
Mode
- ATF (AT-Cut, fund.)
- AT3 (AT-Cut, 3rd overtone)
OSCILLATION MODE & ESR
Frequency
(MHz)
12 ~ 16
16.1 ~ 50
40 ~ 67
67.0 ~ 100
Crystal Cut
Oscillation Mode
AT Fund.
AT Fund.
AT 3rd OT
AT 3rd OT
ESR (max)
(Ohms)
80
40
70
90
STOCKHOLDING AND CUSTOM PARTS
Certain frequencies and specification of MF crystals are stocked by
Euroquartz. Custom frequencies and specifications are readily
manufactured to order on short lead times. Contact Euroquartz sales
office for details.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
Embedded System
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