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FREQ349USMX25/30/30/-10+60/32PF/ATF PDF预览

FREQ349USMX25/30/30/-10+60/32PF/ATF

更新时间: 2024-11-13 10:15:03
品牌 Logo 应用领域
EUROQUARTZ /
页数 文件大小 规格书
1页 59K
描述
Parallel - Fundamental Quartz Crystal, 4.1MHz Min, 4.9MHz Max, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELDED, SMD, 2 PIN

FREQ349USMX25/30/30/-10+60/32PF/ATF 数据手册

  
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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