Datenblatt

Quartz Crystal Units
HC-49/U & HC-49/UT FAMILY
STANDARD THROUGH-HOLE CRYSTALS
STANDARD SPECIFICATIONS
Frequency tolerance (at +25゜
C ±3゜
C)
∆f/F
Actual size
0.975 gm (wt.)
HC-49 / UT
Temperature stability (referred to +25゜
C)
Note : Contact for other temperature stabilities
and operating temperature ranges.
Load capacitance
Shunt capacitance
Drive level
Aging (for first year)
Cut
CL
C0
P
∆f/F
Actual size
0.9075 gm (wt.)
HC-49 / U, HC-49 / UT
ESR
3.8 max.
H
3rd overtone
5th overtone
PART NUMBERING GUIDE
11.3 max.
49 M 2.4576M - 16 / T / XXggg
12 min.
4.9 max.
0.43
Holder type
Circuit calibration condition
+0.05
-0.03
Frequency
Holder
HC-49/U
HC-49/UT
H
13.5 mm max.
11.2 mm max.
AT-CUT
SMI Part No.
Holder
49M2.4576M-16/T/XXggg
49 = HC-49/U
49M9.84375M-20/Q/TTiii
(ppm)
49TS19.6608M/O/QQiii
+100
+80
Circuit Calibration Condition
49 = HC-49/U
49T = HC-49/UT
M = Parallel resonance
CL = 16pF
M = Parallel resonance
CL = 20pF
S = Series resonance
Frequency
Frequency Tolerance
Temperature Stability
2.4576 MHz
T = ±30 ppm
XXggg = ±50 ppm
9.84375 MHz
Q = ±15 ppm
TTiii = ±30 ppm
19.6608 MHz
O = ±10 ppm
QQiii = ±15 ppm
+40
+20
Item
0
-20
Cover
-40
Base
-60
Holder
Sealing
-80
-30
-15
0
+15
+30
+45
+60
TYPICAL TEMPERATURE CHARACTERISTICS
+75
C)
+90 (゜
Terminal lead
Terminal lead plating
RoHS
MCF
HOLDER DATA
+60
-100
-45
Load capacitance (CL)
Example
4.88±0.2
∆f/f
Temperature stability
Frequency tolerance
OCXO
10.5 max.
Fundamental
Equivalent Series
Resistance
XTAL
F
Specifications
HC-49/U
HC-49/UT
13.5 mm max.
11.2 mm max.
1.8432 MHz to 200.000 MHz
J : ±5 ppm
O : ±10 ppm
Q : ±15 ppm
R : ±20 ppm
T : ±30 ppm
X : ±50 ppm
XXggg : ±50 ppm over -10゜
C to +60゜
C
TTiii : ±30 ppm over -20゜
C to +70゜
C
±
RRiii : 20 ppm over -20゜
C to +70゜
C
QQiii : ±15 ppm over -20゜
C to +70゜
C
OOiii : ±10 ppm over -20゜
C to +70゜
C
20 pF, Typical
7.0 pF max.
3 mW max.
±5 ppm max. at +25゜
C ±3゜
C per year
AT-Cut
1.8432 MHz+ : 500 Ω max.
2.000 MHz+ : 400 Ω max.
2.500 MHz+ : 250 Ω max.
3.000 MHz+ : 180 Ω max.
3.500 MHz+ : 100 Ω max.
4.000 MHz+ : 80 Ω max.
4.500 MHz+ : 60 Ω max.
5.000 MHz+ : 50 Ω max.
6.000 MHz+ : 40 Ω max.
7.000 MHz+ : 30 Ω max.
9.000 MHz+ : 25 Ω max.
13.000 MHz+ : 20 Ω max.
20.000 to 120.000 MHz : 60 Ω max.
80.000 to 200.000 MHz : 80 Ω max.
CLK OSC
Symbol
VCXO
Item
Holder type
Holder height
Frequency range
TCXO
HC-49 / U
HC-49/U & HC-49/UT
Metal
Metal
Resistance
Alloy (FeNiCo)
SnCu
Compliant (Pb-free)
49
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