Home > Product > Crystal Units > Specification
 


TECHNICAL TERMS

Crystal wafer (blank) : A piece of quartz crystal cut as specified in terms of shape, dimensions and orientation.


Electrode : Conductive thin film vacuum-evaporated onto a crystal wafer to allow AC voltage to be applied.

Holder : A case housing a crystal wafer, electrode and support to prevent them mechanically and environmentally from being influenced by outside conditions, and also having terminals permitting the electrical connection of the electrode with an outside circuit.

Crystal unit : Mounted crystal wafer with electrode housed in a holder. Fundmental The lowest frequency at which a specific crystal will vibrate.

Overtone : Odd numbers assigned for frequencies in terms of specified oscillation mode (The first overtone is called fundamental mode, followed by 3rd, 5th and 7th overtones, The frequencies are not exactly three times, five times or seven times the fundamental mode.)

Series resonance frequency : Lower frequency of the two given when the electrical impedance of a crystal unit becomes resistant near resonance point.

Load capacitance : Effective series capacitance measured from the terminals of a crystal unit to oscillation circuit and determined as a condition in the case of using a crystal unit in an oscillation circuit. Operating frequency is determined by the electrical characteristics of a crystal unit and the load capacitance.

Nominal frequency : Nominal value expressed in terms of frequency.

Series resonance : Condition of resonance in the case of limitless load capacitance.

Frequency tolerance : Deviation from the nominal frequency expressed by ratio in reference to nominal frequency.

Equivalent series resistance : Equivalent resistance for series resonance frequency.

Load Resonance Resistance : Resistance for the lower (frequency of the two given when the electrical impedance) becomes resistant near the resonance point of a circuit, with the load capacitance connected with a crystal unit in series.

Operating temperature range : Temperature range within which crystal units operate under specified conditions.

Drive level : Electric-power or current level under the specified conditions of a crystal unit.

Main mode and spurious : Main mode indicates the most prominent resonance frequency and spurious indicate other resonance frequencies when there are some resonance frequencies near the nominal frequency.


CRYSTAL UNITS [click holer type. view picture]

Holder Type
Frequency Range
Frequency Stability
Detail
1.8432 MHz ~ 100 MHz
± 10 ~ ± 50ppm
 
3.2MHz ~ 50 MHz
 
6.000 MHz ~ 160 MHz
 
14 MHz ~ 100 MHz
 


HC - 49/U, 49/T
FREQUENCY

MHZ
Holder
Type
OSC
Mode
TYPICAL
CIRCUIT
CALIBRATION
MAX
ESR
OHMS
49/U
49/T
1'st
3'rd
1.000000
    Series(13pF) 
1.843200
    Series(13pF)800
2.000000
    Series(20pF)800
2.457600
    Series(32pF)300
3.000000
    Series(30pF)200
3.276800
    Series(15pF)150
3.579545
    Series(18pF)120
3.686400
    Series100
4.000000
    Series(20pF)80
4.194304
    Series(12pF)60
4.433619
    Series(20pF)55
4.915200
    Series50
5.000000
    Series(20pF)50
5.068800
    Series40
6.000000
    Series40
6.144000
    Series(30pF)40
6.553600
    Series(20pF)40
7.000000
    Series(16pF)40
7.159090
    Series(20pF)40
7.372800
    Series40
8.000000
    Series35
9.830400
    Series35
10.000000
    Series30
10.240000
    Series(32pF)30
10.738635
    Series(32pF)25
11.000000
    Series25
11.059200
    Series25
11.155000
    Series25
11.981350
    Series25
12.000000
    Series25
12.288000
    Series(32pF)25
14.318180
    Series(32pF)20
14.745600
    Series(32pF)20
15.000000
    Series20
16.000000
    Series20
18.000000
    Series20
18.432000
    Series20
19.660800
    Series20
20.000000
    Series20
20.945000
    Series(32pF)20
21.855000
    Series20
22.118400
    Series20
24.000000
    Series20/40
24.576000
    Series20/40
25.000000
    Series20/40
28.636360
    Series20/40
32.000000
    Series20/40
40.000000
    Series40
48.000000
    Series40
50.000000
    Series40
64.000000
    Series40
67.250000
    Series40
75.000000
    Series40
100.000000
    Series40


HC - 49/S, HC-49/SM
FREQUENCY

MHZ
Holder
Type
OSC
Mode
TYPICAL
CIRCUIT
CALIBRATION
MAX
ESR
OHMS
49/S
49/SM
1'st
3'rd
3.579545
    Series(18pF)200
3.686400
    Series200
4.000000
    Series(20pF)150
4.194304
    Series(12pF)150
4.433619
    Series(20pF)150
4.915200
    Series150
5.000000
    Series(20pF)120
5.068800
    Series120
6.000000
    Series120
6.144000
    Series(30pF)120
6.553600
    Series120
7.000000
    Series120
7.159090
    Series120
7.372800
    Series80
8.000000
    Series80
9.830400
    Series80
10.000000
    Series60
10.240000
    Series(32pF)60
10.738635
    Series60
11.000000
    Series60
11.059200
    Series60
12.000000
    Series60
14.318180
    Series(32pF)50
14.745600
    Series50
15.000000
    Series50
16.000000
    Series50
18.000000
    Series50
18.432000
    Series50
19.660800
    Series50
20.000000
    Series50
22.118400
    Series50
24.000000
    Series50
28.636360
    Series80/3rd
32.000000
    Series80/3rd
40.000000
    Series80/3rd
48.000000
    Series80/3rd
50.000000
    Series80/3rd
60.000000
    Series80/3rd


UM-1, UM-5
FREQUENCY

MHZ
Holder
Type
OSC
Mode
TYPICAL
CIRCUIT
CALIBRATION
MAX
ESR
OHMS
UM-1
UM-5
1'st
3'rd
6.000000
    Series120
6.144000
    Series(30pF)120
6.553600
    Series120
7.000000
    Series100
7.159090
    Series(20pF)100
7.372800
    Series10
8.000000
    Series80
9.830400
    Series80
10.000000
    Series(32pF)60/80
10.738635
    Series60/80
11.000000
    Series50/70
11.059200
    Series50/70
12.000000
    Series40/60
14.318180
    Series(32pF)30/50
14.745600
    Series30/50
15.000000
    Series30/50
16.000000
    Series30/50
18.000000
    Series30/50
18.432000
    Series30/50
19.660800
    Series30/50
20.000000
    Series30/40
20.945000
    Series30/40
22.118400
    Series30/40
24.000000
    Series30/40
25.000000
    Series30/40
32.000000
    Series30/40
40.000000
    Series60/3rd
48.000000
    Series60/3rd
60.000000
    Series50/3rd
75.000000
    Series50/3rd
80.000000
    Series50/3rd
100.000000
    Series50/3rd
125.000000
    Series50/3rd
140.000000
    Series50/3rd
150.000000
    Series50/3rd
  
Copyright ⓒ 1999 SOOJUNG COMMUNICATION CO., LTD. All rights reserved,
주소 : 서울시 서초구 양재동 243-8 , 수정빌딩 , 전화 : 02 - 573 - 1457 ,
팩스 : 02 - 573 -1458