Crystal Resonators
UM-1, UM-4, UM-5, HC-49/T, HC-49/U, HC-50/T, HC-50/U
The UM Series Resonators feature excellent frequency stability and are
suitable for pager and mobile radio applications. These highly impact-
resistant, reliable crystal resonators have been reduced in size without
trading off their electrical characteristics.
The HC Series Resonators are excellent in frequency stability and suit-
able as the reference clocks of microprocessors and other electronic
devices.
Features
Automatic mounting with tape & reel form is possible.
Series Resistance
Type Vibration
UM-4
UM-5
UM-1 HC-49／T HC-50／T
Mode
Ωmax. Ωmax. Ωmax. Ωmax. Ωmax.
Frequency
–
–
–
–
–
1.8∼2.0MHz
F
–
–
–
–
–
F
2.0∼2.4MHz
–
–
–
–
–
F
2.4∼3.0MHz
–
–
–
–
–
3.0∼3.5MHz
F
–
–
–
150
150
F
3.5∼4.0MHz
4.0∼7.0MHz
–
–
–
90
90
F
45
45
–
–
–
F
7.0∼10MHz
10∼15MHz
45
45
50
50
50
F
25
25
50
50
50
F
15∼20MHz
50/– 50/–
50 25/60 25/60
F/3
20∼25MHz
50/– 50/–
50 25/40 25/40
F/3
25∼30MHz
40
40
70
70
70
3
30∼75MHz
70/– 70/80 70/80
–/60 –/60
3/5
75∼100MHz
60
60
80
80
80
5
100∼125MHz
125∼150MHz
100
100
100
80
80
5
120
120
–
–
–
7
150∼200MHz
HC−49／U HC−50／U
Ωmax. Ωmax.
600
600
450
450
350
350
150
150
90
90
60
60
35
35
35
35
25
25
25/50 25/50
25/40 25/40
40
40
–/60 –/60
60
60
80
80
–
–
※3.75±0.2
8max.
Frequency Range
1.8∼200MHz
Vibration Mode
Thickness-shear mode (AT cut)
Fund，
3rd，
5th，
7th
Drive Level
10μW，
50μW，
100μW，
500μW
Load Capacitance
Series，
12pF, 16pF, 20pF， （fund.）
32pF
8pF, 10pF, 12pF, 16pF
（3rd, 5th, 7th）
Frequency Tolerance（at 25℃）
±5×10
-6
，
±10×10
-6
，
±15×10
-6
,
-6
-6
±20×10 ，
±30×10
Frequency Tolerance over
Temperature（Ref. to 25℃）
±5×10
-6
，
±10×10
-6
，
±20×10
-6
,
±30×10
-6
，
±50×10
-6
Operating Temperature Range
−10℃∼＋60℃
Storage Temperature Range
−30℃∼＋80℃
Aging Characteristics
UM Series:
±1×10
-6
，
±2×10
-6
，
±3×10
-6
／
year max.）
（
HC Series
：
-6
（
±5×10 ／year max.）
Consult our sales representative for other specifications or special specifications.
Dimensions[mm]
5max.
L max.
6.05
−0.38
+ 0.25
5max.
L max.
20±1
※4.88±0.2
※4.88±0.2
11.5max.
11.5max.
φ1.02
L
HC-50/U 13.46
HC-50/T 11.0
L
HC-49/U 13.46
HC-49/T 11.0
3.5max.
L max.
12.5±1
UM-4
UM-5
UM-1
L
4.5
5.8
8.5
φ0.35±0.05
※Per
dimension closest to the body of the unit.
26
φ0.43
−0.02
+ 0.05
−0.07
+ 0.05
Switching Power Supply Study Group
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