FREQ349USMX/10/30/-10+60/30PF/AT3 [EUROQUARTZ]
Parallel - 3Rd Overtone Quartz Crystal, 50.1MHz Min, 70MHz Max, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELDED, SMD, 2 PIN;型号: | FREQ349USMX/10/30/-10+60/30PF/AT3 |
厂家: | EUROQUARTZ LIMITED |
描述: | Parallel - 3Rd Overtone Quartz Crystal, 50.1MHz Min, 70MHz Max, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELDED, SMD, 2 PIN |
文件: | 总1页 (文件大小:59K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
EUROQUARTZ
49USMX CRYSTALS
49SMD Standard and Low Profile
FEATURES
• Low cost crystal for mass market applications
• Surface mount version of HC49-4H crystal
• Comprehensive stockholding of standard frequencies
• Customized parts readily available
OUTLINE & DIMENSIONS
• Industry-standard package
• Low-profile versions available
DESCRIPTION
49USMX crystals are low profile surface mount crystals that have the
same footprint as standard HC49 or HC49-4H crystals. 49USMD
crystals are ideal for use in low cost, mass-market applications. The
crystal may also be specified with close tolerances when required.
SPECIFICATION
Frequency Range:
Calibration Tolerance:
3.2MHz to 70MHz
± 30ppm at 25°C standard
± ±0ppm available
Frequency Stability over Temp.
AT-Cut:
BT-Cut:
Operating Temperature Range:
Shunt Capacitance (C0):
Load Capacitance (CL):
± 30ppm over -±0° ~ +60°*
± ±00ppm over -±0° ~ +60°C*
-±0° ~ +60°C to -40° ~ +85°C
4pf typical, 7pF maximum
Series or from 8pF to 32pF
(Customer specified)
Ageing:
± 3ppm maximum in first year
± ±ppm per year thereafter
(Ta = 25°C, drive ±00 W)
±00mW typical, 500mW maximum
260°C, ±0s maximum
Hermetic seal, resistance weld
EIA 24mm tape and reel
±000 pieces per reel
PART NUMBERING
Drive Level:
Reflow Soldering:
Holder:
49USMX part numbers are derived as follows:
Packaging:
Example: 16.000MHz 49USMX/30/50/-20+70/30pF/ATF
RoHS Status:
Compliant
Nominal Frequency
* Closer tolerances may be specified
Holder Style & Height
49USMX = 4.2mm
49USMXL = 3.2mm
49USMX25 = 2.5mm
ESR & OSCILLATION MODE
Calibration Tolerance at 25°C
± ppm
Frequency
Range
(MHz)
Max.
ESR
(Ohms)
Crystal Cut
&
Oscillation Mode
Temperature Stability
(Over Operating Temperature Range)
± ppm
3.2~3.4
3.5~4.0
4.±~4.9
5.0~5.9
6.0~8.9
9.0~9.9
±0.0~±2.9
±3.0~24.0
24.±~30.0
24.0~48.0
27.0~30.0
30.0~50.0
50.±~70.0
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
AT Fund.
BT Fund.
AT 3rd OT
AT 3rd OT
AT 3rd OT
300
±50
±20
±00
80
60
50
45
40
Operating Temperature Range
°C, lower and upper figure
(May also be shown as lower figure only)
Circuit Condition
SR = Series Resonant
Or 8pF to 32pF
40
±50
±00
80
Operating Mode
ATF = AT-Cut, Fundamental
BTF = BT-Cut Fundamental
AT3 = AT-Cut 3rd Overtone
* If required the maximum ESR may be specified,
in which case use the suffix ‘/R40’ where for
instance a maximum ESR of 40W is required.
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44(0)1460 230000 Fax: +44(0)1460 230001 Email: sales@euroquartz.co.uk www.euroquartz.co.uk
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