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參數資料
| 型號： | 45.000MHZHC49/3W/50/20/10/8PF/ATF |
| 廠商： | EUROQUARTZ LTD |
| 元件分類： | Quartz Crystal |
| 英文描述： | QUARTZ CRYSTAL RESONATOR, 45 MHz |
| 封裝： | RESISTANCE WELDED, HERMATIC SEALED PACKAGE-3 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 156K |
| 代理商： | 45.000MHZHC49/3W/50/20/10/8PF/ATF |
EUROQUARTZ LIMITED Blacknell Lane CREWKERNE Somerset UK TA18 7HE
Tel: +44 1460 230000 Fax: +44 1460 230001 email: info@euroquartz.co.uk web: www.euroquartz.co.uk
THROUGH-HOLE CRYSTALS
Frequency Range:
1.0MHz to 250.0MHz
Calibration Tolerance at 25C:
from ±3ppm to ±50ppm
Frequency stability over temp:
from ±3ppm to ±100ppm
Load Capacitance:
8pF to 50pF, or Series
Ageing:
±3ppm max 1st year,
±1ppm max per year after
Drive level:
1mW max
Static capacitance (C0):
7pF max
Holder:
Resistance-weld, hermetic seal
Part Numbers for Holder Variants *
Holder Type
Holder Designation
Standard 2 lead:
HC49
Low height versions:
HC49/T (from 4.0MHz)
Centre Earth Lead:
HC49/3W
Centre Earth Lead (Low):
HC49/T/3W (from 4.0MHz)
‘Plug-in’ for use in socket:
HC-50
Very low cost crystal
Available with close tolerances
Fully customisable specification
Comprehensive Euroquartz stockholding
Industry-standard package with options
Very wide frequency range
HC49 SERIES CRYSTALS
* HC49 crystals are also available for surface-mount applications with
formed leads and fitted with a clip. See ‘49MJ’ in the surface-mount
crystal section on Euroquartz website; www.euroquartz.co.uk
FEATURES
GENERAL SPECIFICATION
DESCRIPTION
HC49 crystals are a long-established industry-standard part. Basic
specification HC49 crystals provide the lowest cost crystal available but
these crystals can also be manufactured to very close tolerances and low
ESR values. Holder variants are HC49/T (truncated), providing a lower
height version, 3-wire versions where the crystal base and body can be
earthed by a centre earth wire and HC50 which has larger diameter leads
specifically for socket mounting.
OUTLINES & DIMENSIONS
Frequency
(MHz)
Crystal Cut/
Oscillation Mode
ESR (max)
(Ohms)
OSCILLATION MODE & ESR
1.0 ~ 1.3
SL Fund.
5000
2.01 ~ 3.0
AT Fund.
400
3.01 ~ 3.2
AT Fund.
200
3.21 ~ 3.5
AT Fund.
150
3.51 ~ 3.9
AT Fund
120
3.91 ~ 5.0
AT Fund.
100
5.01 ~ 7.0
AT Fund.
50
7.01 ~ 10.0
AT Fund.
35
10.0 ~ 30.0
AT Fund.
25
30.1 ~ 45
AT Fund.
20
24.0 ~ 100
AT 3rd OT
40
80.0 ~ 160
AT 5th OT
70
110 ~ 250
AT 7th OT
120
ü Indicates this stability is available over the stated operating temp. range
PART NUMBER GENERATION
HC49 crystal part numbers are derived as follows:
Example:
16.000MHz HC49/30/50/10/30pF/ATF
Frequency/Holder/Calibration/Temp. Stability/ Temp. Range/Circuit
FREQUENCY STABILITY OVER TEMPERATURE
0° to +50°
ü
-10° to +60°
ü
-20° to +70°
X
ü
-30° to +80°
X
ü
-40° to +90°
X
ü
-55° to +105°
X
ü
Operating
Temp. °C
Temperature Stability (ppm)
±3
±5
±7.5
±10
±15
±20
±30
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