Data Sheet - Euroquartz

EURO QUARTZ
MT CRYSTALS
3.2 x 2.5 x 0.7mm SMD
12.0MHz to 60MHz
FEATURES
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.
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.
SPECIFICATION
Frequency Range:
Operating Mode:
Calibration Tolerance at 25ºC*:
Frequency stability*
-10° to +60°C
-20° to +70°C
-40° to +85°C
Operating Temperature Range:
Storage Temperature:
Equivalent Series Resistance*
12.000MHz to 20.000MHz:
20.001MHz to 60.000MHz:
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Reflow Soldering:
Packaging:
OUTLINE & DIMENSIONS
12.0MHz to 60.0MHz
AT-Cut Fundamental:
from ±5ppm
(±10, ±20 or ±30ppm standard)
from ±5ppm
from ±10ppm
from ±15ppm
From 0° ~ +50°C to -40° ~+85°C
-50°~+105°C
100Ω maximum
60Ω maximum
2pF to 4pF typical, 5pF maximum
Series or from 8pF to 32pF
(Customer specified CL)
<±3ppm per year at +25°C
10µW typical, 100µW maximum
10s maximum at 260°C twice
or 180s at 230°C, once.
12mm EIA tape and reel
*Note: Tighter stability, tolerance and lower ESR values are available.
PART NUMBER GENERATION
Part numbers for MT crystals are generated as follows:
STANDARD PART NUMBERS AND SPECIFICATIONS
Frequency CL
(MHz)
(pF)
16.0000
16.3840
20.0000
20.5720
20.9450
24.5500
24.5760
29.4912
32.0000
32.7680
40.0000
48.0000
50.0000
12
12
12
12
12
12
12
12
12
12
12
12
12
Euroquartz
Part Number
Tolerance (±ppm)/
Stability (±ppm)/
Temp. Range (°C)/
Max. ESR (Ohms)
MT-16000-12
MT-16384-12
MT-20000-12
MT-20572-12
MT-20945-12
MT-24550-12
MT-24576-12
MT-29491-12
MT-32000-12
MT-32768-12
MT-40000-12
MT-48000-12
MT-50000-12
30/50/-20+70/100R
30/50/-20+70/100R
30/50/-20+70/100R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
30/50/-20+70/60R
Example:
16.000MHz MT/10/10/-10+60/12pF/80R
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)
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 (0)1460 230000 Fax: +44 (0)1460 230001 info@euroquartz.co.uk www.euroquartz.co.uk