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250.000MHZ49SMD/3/50/-20+70/32

更新时间： 2024-10-31 10:10:19
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EUROQUARTZ /
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Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, ROHS COMPLIANT, HERMETIC SEALED, RESISTANCE WELD, SMD, 3 PIN

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250.000MHZ49SMD/3/50/-20+70/32 数据手册

  
QUARTZ  
EURO  
49SMD Crystals  
SMD form of HC49 Crystals  
1.0MHz to 200.0MHz  
Low-cost, industry-standard crystal unit formed for SMD  
Available with close tolerances  
Frequency range 1.0MHz to 200MHz  
Specifications fully customisable  
OUTLINE & DIMENSIONS  
DESCRIPTION  
49SMD crystals are long-established, industry-standard HC49 crystals  
with formed leads and a clip to facilitate surface mounting. The  
crystals provide a high quality but very low cost source of system  
clock frequency 49SMD crystals may be produced to very close  
tolerances.  
SPECIFICATION  
Frequency Range:  
1.0MHz to 200MHz  
Oscillation Mode:  
See table  
Calibration Tolerance at 25ºC  
SL-Cut (<1.3MHz):  
from ±50ppm  
from ±3ppm  
AT-Cut (>1.3MHz):  
Frequency Stability over temperature  
SL-Cut (<1.3MHz):  
from ±100ppm -10° to +60°C  
from ±3ppm 0° to +50°C  
(see table)  
AT-Cut (>1.3MHz):  
Shunt Capacitance (C0):  
Load Capacitance (CL):  
4pF typical, 7pF maximum  
Series or from 8pF to 32pF  
(Customer specified CL)  
Ageing:  
±3ppm maximum, 1st year,  
±1ppm per year thereafter.  
100mW typical., 500mW max.  
Resistance-weld hermetic seal  
Bulk pack or 'Ammo Pak' tape.  
Drive Level:  
Crystal Holder:  
Supply format:  
STABILITY OVER TEMPERATURE RANGE (AT-CUT CRYSTALS)  
Stability ppm  
Temp.  
Range °C  
±7.5 ±10 ±15 ±20 ±30 ±50 ±100  
ESR and OSCILLATION MODE  
0~+50 ü ü ü ü ü ü ü  
-10~+60 ü ü ü ü ü ü ü  
Crystal Cut  
Osc. Mode  
ESR  
Ω Max.  
Frequency  
Range MHz  
-20~+70  
-30~+80  
-40~+85  
-55~+125  
X ü ü ü ü ü ü  
X
X
X
X
X
X
X ü ü ü ü  
X
X
X ü ü ü  
X ü ü  
1.0 ~1.3  
SL Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT Fund.  
AT 3rd OT  
At 5th OT  
AT 7th OT  
5000  
400  
200  
150  
120  
100  
50  
35  
25  
20  
40  
X
2.01 ~ 3.0  
3.01 ~ 3.2  
3.21 ~ 3.5  
3.51 ~ 3.9  
3.91 ~ 5.0  
5.01 ~ 7.0  
7.01 ~ 10.0  
10.0 ~ 30.0  
30.1 ~ 45.0  
24.0 ~ 100  
80.0 ~ 160  
110 ~ 250  
(ü= Available, X = Not available)  
PART NUMBER FORMAT  
Example:  
8.000MHz 49SMD /10/10/-20+70/32/ 30R  
Frequency in MHz  
Package  
70  
120  
49SMD or 49TSMD  
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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 		Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, ROHS COMPLIANT, HERMETIC SEALED, RESIS
250.000MHZHC49/3/10/0/30PF/AT7 EUROQUARTZ

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 		Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PAC
250.000MHZHC49/3/10/10/SR/AT7 EUROQUARTZ

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 		Series - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKA
250.000MHZHC49/3/10/20/50PF/AT7 EUROQUARTZ

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 		Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PAC
250.000MHZHC49/3/10/20/8PF/AT7 EUROQUARTZ

获取价格

 		Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PAC
250.000MHZHC49/3/10/20/SR/AT7 EUROQUARTZ

获取价格

 		Series - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKA
250.000MHZHC49/3/10/30/SR/AT7 EUROQUARTZ

获取价格

 		Series - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PACKA
250.000MHZHC49/3/15/0/30PF/AT7 EUROQUARTZ

获取价格

 		Parallel - 7Th Overtone Quartz Crystal, 250MHz Nom, RESISTANCE WELDED, HERMATIC SEALED PAC

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