EURO
QUARTZ
5 x 3.2 x 0.9mm SMD
FEATURES
Miniature size: 5.0mm x 3.2mm x 1.0mm height
Gold-plated ceramic base with metal seam-welded lid
To minimize EMI the whole crystal may be grounded
High shock and vibration resistance
Ideal for PDAs, GPS, PCMCIA, Wirless LAN etc.
DESCRIPTION
MJ crystals are miniature surface-mount crystals produced with a
ceramic substrate and seam-welded metal lid. Their compact size and
low mass make hem an ideal crystal for high-density applications.
SPECIFICATION
Frequency Range:
AT-Cut Fundamental:
AT-Cut 3rd Overtone:
Calibration Tolerance at 25ºC:
OUTLINE & DIMENSIONS
MJ CRYSTALS
7.0MHz to 125MHz
7.0MHz to 50.0MHz
40.0MHz to 125.0MHz
from ±5ppm
(±10, ±20 or ±30ppm standard)
Frequency stability
-10° to +60°C
from ±5ppm
-20° to +70°C
from ±10ppm
-40° to +90°C
from ±15ppm
Storage Temperature:
-50°~+105°C
Effective Series Resistance and Mode
7.0MHz to 50.0MHz:
50Ω max., AT-Cut Fundamental
40.0MHz to 125.0MHz:
80Ω max., AT-Cut 3rd Overtone
Operating Temperature Range:
from 0° ~ +50°C
to -55° ~ +105°
Shunt Capacitance (C0):
2pF to 4pF typical, 5pF maximum
Load Capacitance (CL):
Series or from 10pF to 32pF
(Customer
specified CL)
Ageing:
<±3ppm per year at +25°C
Drive level:
100
mW
maximum
Reflow Soldering:
10s maximum at 260°C twice
or 180s at 230°C, once.
Package:
Ceramic base, metal (Kovar) lid,
Hermetic seal
Packaging:
12mm EIA tape and reel
1000 pieces per reel
PART NUMBER GENERATION
Part numbers for MJ crystals are generated as follows:
Example:
12.000MHz MJ/20/30/-10+60/18pF/60R
Nominal Frequency
Package MJ
ENVIRONMENTAL SPECIFICATION
RoHS Status:
Gross Leak:
Fine Leak:
Shock:
Compliant
1kg pressurized water immersion
test as per Euroquartz procedures.
<5x10
-8
atm cc/s -helium leak test
±5ppm max. Free drop 3 times
from 75cm height onto a hard
wooden board or half sine wave
acceleration of 100g peak
amplitude for 11 ms duration, 3
cycles each plane.
±5ppm max., frequency 10 to
55Hz, amplitude 1.5mm or
10g rms. Duration 6 hours.
MIL-STD-883, Method 2003
48 hours at 85°C, relative
humidity, non-condensing
Temperature cycling: Exposed to
-40°C for 30 minutes then to
+85°C for 30 minutes,
- duration 5 days.
Calibration Tolerance
at 25°C (±ppm)
Temperature Stability
over temp. range (±ppm)
Operating Temp. Range (°C)
(Lower and upper limits)
Common ranges: -10° ~ +60°C
-20° ~ +70°C
-40° ~ +85°C
(Or custom temp. range -
check with Euroquartz sales)
Load Capacitance
(Either SR for series or CL in pF)
Equivalent Series Resistance
(Optional - include when
special value is required)
Vibration:
Solderability:
Humidity:
Thermal Shock:
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
Microchip MCU
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