EURO
QUARTZ
FEATURES
Miniature size: 6.0mm x 3.5mm height
Tight tolerances available
High shock and vibration resistance
Ideal for PDAs, GPS, PCMCIA and hand-held equipment
MF & MF2 CRYSTALS
6 x 3.5mm SMD, 4 pad or 2 pad
OUTLINE & DIMENSIONS
DESCRIPTION
Miniature surface mount MF crystals incorporate a ceramic substrate
and hermetically-sealed metal lid. The compact size and low mass
with a high-specification crystal make MF crystals ideal for high
density applications as well as hand-held and communications
equipment.
MF
SPECIFICATION
Frequency Range
AT-Cut Fundamental:
AT-Cut 3rd Overtone:
Calibration Tolerance at 25ºC*:
Frequency stability
-10° to +60°C
-20° to +70°C
-40° to +90°C
-55 to +125°C
Storage Temperature:
Equivalent Series Resistance:
Shunt Capacitance (C0):
Load Capacitance (CL):
Ageing:
Drive level:
Reflow Soldering:
Package:
Packaging:
10.0MHz to 50.0MHz
30.0MHz to 125.0MHz
from ±5ppm
(±10, ±20 or ±30ppm standard)
from ±5ppm
from ±10ppm
from ±15ppm
from ±20ppm
-55°~+105°C
See table
2pF to 4pF typical, 7pF maximum
Series or from 8pF to 32pF
(Customer
specified CL)
<±3ppm per year at +25°C
100
mW
maximum
10s maximum, 260°C twice
or 180s at 230°C, once.
Ceramic base, metal lid,
Hermetic seal
16mm EIA tape and reel
1000 pieces per reel
MF2
EQUIVALENT SERIES RESISTANCE
Frequency Crystal Cut/
ESR
Range MHz
Mode
Ohms Max.
10.0 ~ 12.0
AT Fund.
80
12.1 ~ 16.0
AT Fund.
60
16.1 ~ 50.0
AT Fund.
40
30.0 ~ 40.0 AT 3rd OT
100
40.1 ~ 50.0 AT 3rd OT
80
50.1 ~ 125
AT 3rd OT
50
PART NUMBER GENERATION
Example:
12.000MHz MF/20/30/-10+60/18pF/60R
Nominal Frequency
Package
(MF = 4 pad, MF2 = 2 pad
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 Email: info@euroquartz.co.uk www.euroquartz.co.uk
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