EURO
QUARTZ
4 x 2.5 x 0.6mm SMD
FEATURES
Miniature package: 4.0 x 2.5 x 0.6mm
Gold-plated ceramic base with metal seam-welded package
Very low ageing
Designed for hand-held equipment, PDAs, Blue Tooth, GPS
High shock and vibration resistance
X42 CRYSTALS
10.0MHz to 60MHz
DESCRIPTION
X42 crystals are micro-miniature surface-mount mount crystals. The
crystals have a gold plated ceramic base with a seam welded metal lid
providing a stable crystal with very low ageing. The rugged construction
ensures that this crystal has high shock and vibration resistance. The
crystal has been specifically designed for use in small hand-held
communication equipment such as PDAs, GPS and Bluetooth.
OUTLINE & DIMENSIONS
SPECIFICATION
Frequency Range:
Operating Mode:
Calibration Tolerance at 25ºC*:
Frequency stability*
-10° to +60°C
-20° to +70°C
-30° to +85°C
Storage Temperature:
Equivalent Series Resistance:
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Reflow Soldering:
Packaging:
10.0MHz to 60.0MHz
AT-Cut Fundamental:
from ±5ppm
(±10, ±20 or ±30ppm standard)
from ±5ppm
from ±10ppm
from ±10ppm
-50°~+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 µW 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
EQUIVALENT SERIES RESISTANCE (ESR)
Frequency
Range MHz
12.0 ~ 20.0
20.1 ~ 60.0
Crystal Cut/
Mode
AT Fund.
AT Fund.
ESR
Ω Max.
80
60
Part numbers for X42 crystals are generated as follows:
Example:
12.000MHz X42/20/30/-10+60/18pF/60R
Nominal Frequency
Package
ENVIRONMENTAL PERFORMANCE
RoHS Status:
Storage Temperature Range:
Humidity:
Hermetic Seal:
Solderability:
Reflow:
Vibration:
Shock:
Compliant
-55° to +105°C
85% RH, 85°C for 48 hours
Leak rate 2x10
-8
ATM -cm
3
/s max.
MIL-STD-202F Method 208E
260°C for 10 sec (see diagram)
MIL-STD-202F Method 204,
35±5 mins, 50 to 2000Hz
MIL-STD-202F Method 213B, test
Condition E, 50g 11ms.
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
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