Datasheet

EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: [phone] Fax: [phone] [e-mail] www.euroquartz.co.uk
EURO
QUARTZ
DESCRIPTION
MT crystals are ultra-miniature AT-cut crystals covering the frequency
range 12MHz to 60MHz in fundamental mode. Their small size and low
mass makes these crystals ideal for miniaturized hand-held equipment
and similar high-density applications.
Frequency range 12MHz to 60MHz, fundamental mode
Ultra-small package 3.2mm x 2.5mm x 0.6mm
Entire package may be grounded via metal lid and two pads
Packaged in standard EIA tape and reel
Extremely low ageing with high shock and vibration resistance
Ideal for PDAs, hand-held GPS, PCMCIA etc.
OUTLINE & DIMENSIONS
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+70/60R
20.9450 12 MT-20945-12 30/50/-20+70/60R
24.5500 12 MT-24550-12 30/50/-20+70/60R
24.5760 12 MT-24576-12 30/50/-20+70/60R
29.4912 12 MT-29491-12 30/50/-20+70/60R
32.0000 12 MT-32000-12 30/50/-20+70/60R
32.7680 12 MT-32768-12 30/50/-20+70/60R
40.0000 12 MT-40000-12 30/50/-20+70/60R
48.0000 12 MT-48000-12 30/50/-20+70/60R
50.0000 12 MT-50000-12 30/50/-20+70/60R
Frequency
(MHz)
CL
(pF)
Euroquartz
Part Number
STANDARD PART NUMBERS AND SPECIFICATIONS
PART NUMBER GENERATION
Part numbers for MT crystals are generated as follows:
16.000MHz MT/10/10/-10+60/12pF/80R
Tolerance (±ppm)/
Stability (±ppm)/
Temp. Range (°C)/
Max. ESR (Ohms)
3.2 x 2.5 x 0.7mm SMD
12.0MHz to 60MHz
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)
MT CRYSTALS
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
Operating Temperature Range: From 0° ~ +50°C to -40° ~+85°C
Storage Temperature: -50°~+105°C
Equivalent Series Resistance*
12.000MHz to 20.000MHz: 100Ω maximum
20.001MHz to 60.000MHz: 60Ω maximum
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: 10µW typical, 100µW maximum
Reflow Soldering: 10s maximum at 260°C twice
or 180s at 230°C, once.
Packaging: 12mm EIA tape and reel
SPECIFICATION
*Note: Tighter stability, tolerance and lower ESR values are available.
FEATURES