EURO
QUARTZ
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, Wirles LAN etc.
MJ CRYSTALS
5 x 3.2 x 1.0mm SMD
·
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:
Mode:
Calibration Tolerance at 25ºC:
Frequency stability
-10° to +60°C
-20° to +70°C
-40° to +90°C
Storage Temperature:
Effective Series Resistance:
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Reflow Soldering:
Package:
Packaging:
10.0MHz to 48.0MHz
AT-Cut Fundamental
from ±5ppm
(±10, ±20 or ±30ppm standard)
from ±5ppm
from ±10ppm
from ±15ppm
-40°~+105°C
See table
2pF to 4pF typical, 5pF maximum
Series or from 10pF to 32pF
(Customer
specified CL)
<±3ppm per year at +25°C
100
mW
maximum
10s maximum at 260°C twice
or 180s at 230°C, once.
Ceramic base, metal (Kovar) lid,
Hermetic seal
12mm EIA tape and reel
1000 pieces per reel
PART NUMBER GENERATION
Part numbers for MJ crystals are generated as follows:
Example:
OUTLINE & DIMENSIONS
EQUIVALENT SERIES RESISTANCE (ESR)
Frequency Crystal Cut/
ESR
Range MHz
Mode
Ohms Max.
10.0 ~ 12.0
12.0 ~ 16.0
16.01~48.0
AT Fund.
AT Fund.
AT Fund.
80
60
50
12.000MHz MJ/20/30/-10+60/18pF/60R
Nominal Frequency
Package
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)
Load Capacitance
(Either SR for series or CL in pF)
Equivalent Series Resistance
(Optional - use 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 Email: info@euroquartz.co.uk www.euroquartz.co.uk
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