參數(shù)資料
型號(hào)： 20.000MHZX42/5/10/-20+70/18PF/80R
廠商： EUROQUARTZ LTD
元件分類： 晶體
英文描述： QUARTZ CRYSTAL RESONATOR, 20 MHz
封裝： ROHS COMPLIANT, MINIATURE, CERAMIC, SMD, 4 PIN
文件頁數(shù)： 1/1頁
文件大小： 118K
代理商： 20.000MHZX42/5/10/-20+70/18PF/80R
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
EURO QUARTZ
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.
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
OUTLINE & DIMENSIONS
Frequency Range:
10.0MHz to 60.0MHz
Operating Mode:
AT-Cut Fundamental:
Calibration Tolerance at 25C*:
from ±5ppm
(±10, ±20 or ±30ppm standard)
Frequency stability*
-10° to +60°C
from ±5ppm
-20° to +70°C
from ±10ppm
-30° to +85°C
from ±10ppm
Storage Temperature:
-50°~+105°C
Equivalent Series Resistance:
See table
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 W maximum
Reflow Soldering:
10s maximum at 260°C twice
or 180s at 230°C, once.
Packaging:
12mm EIA tape and reel
SPECIFICATION
*Note: Tighter stability, tolerance and lower ESR values are available.
PART NUMBER GENERATION
Part numbers for X42 crystals are generated as follows:
X42 CRYSTALS
FEATURES
4 x 2.5 x 0.6mm SMD
10.0MHz to 60MHz
12.0 ~ 20.0
AT Fund.
80
20.1 ~ 60.0
AT Fund.
60
Frequency
Range MHz
Crystal Cut/
Mode
ESR
Ω Max.
EQUIVALENT SERIES RESISTANCE (ESR)
12.000MHz X42/20/30/-10+60/18pF/60R
Example:
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)
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