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EURO
QUARTZ
MT CRYSTALS
3.2 x 2.5 x 0.7mm SMD
FEATURES
Frequency range 12MHz to 60MHz, fundamental mode
Ultra-small package 3.2mm x 2.5mm x 0.6mm
Packaged in standard EIA tape and reel
Ideal for PDAs, hand-held GPS, PCMCIA etc.
DESCRIPTION
MT crystals are ultra-miniature AT-cut crystals covering the frequency
range 12MHz to 60MHz in fundamental mode and up to 150MHz in
3rd overtone mode. Their small size and low mass makes these crystals
ideal for miniaturized hand-held equipment and similar high-density
applications.
SPECIFICATION
Frequency Range: 12.0MHz to 60.0MHz
Operating Mode: AT-Cut Fundamental:
Calibration Tolerance at 25ºC*: from ±5ppm
(±10, ±20 or ±30ppm standard)
Frequency stability*
-10° to +60°C from ±5ppm
-20° to +70°C from ±10ppm
-40° to +85°C from ±15ppm
Storage Temperature: -40°~+85°C
Equivalent Series Resistance: See table
Shunt Capacitance (C0): 2pF to 4pF typical, 5pF maximum
Load Capacitance (CL): Series or from 8pF to 32pF
(Customer specified CL)
Ageing: <±3ppm per year at +25°C
Drive level: 10 µW typical, 100µW maximum
Reflow Soldering: 10s maximum at 260°C twice
or 180s at 230°C, once.
Packaging: 12mm EIA tape and reel
12.0MHz to 60MHz
OUTLINE & DIMENSIONS
*Note: Tighter stability, tolerance and lower ESR values are available.
STANDARD PART NUMBERS AND SPECIFICATIONS
Frequency
(MHz)
16.0000 12 MT-16000-12 30/50/-20+70/100R
16.3840 12 MT-16384-12 30/50/-20+70/100R
20.0000 12 MT-20000-12 30/50/-20+70/100R
20.5720 12 MT-20572-12 30/50/-20+70/50R
20.9450 12 MT-20945-12 30/50/-20+70/50R
24.5500 12 MT-24550-12 30/50/-20+70/50R
24.5760 12 MT-24576-12 30/50/-20+70/50R
29.4912 12 MT-29491-12 30/50/-20+70/50R
32.0000 12 MT-32000-12 30/50/-20+70/50R
32.7680 12 MT-32768-12 30/50/-20+70/50R
40.0000 12 MT-40000-12 30/50/-20+70/50R
48.0000 12 MT-48000-12 30/50/-20+70/50R
50.0000 12 MT-50000-12 30/50/-20+70/50R
(pF)
CL
Euroquartz
Part Number
Tolerance (±ppm)/
Stability (±ppm)/
Temp. Range (°C)/
Max. ESR (Ohms)
PART NUMBER GENERATION
Part numbers for MT crystals are generated as follows:
Example:
Nominal Frequency
Package
Calibration tolerance
at 25°C (±ppm)
Temperature Stability
over temp. range (±ppm)
Operating Temp. Range (°C)
(Lower and upper limits)
Load Capacitance
(Either SR for series or CL in pF)
Equivalent Series Resistance
(Optional - use when special
value is required)
16.000MHz MT/10/10/-10+60/12pF/80R
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 [email protected] www.euroquartz.co.uk
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