26
±5×10-6
，±10×10-6
，±15×10-6,
±20×10-6
，±30×10-6
±5×10-6
，±10×10-6
，±20×10-6,
±30×10-6
，±50×10-6
UMSeries:
±1×10-6
，±2×10-6
，±3×10-6
／
year（max.）
HCSeries：
±5×10-6
／year（max.）
UM-1,UM-4,UM-5,HC-49/T,HC-49/U,HC-50/T,HC-50/U
HC-49/U
HC-49/T
L
13.46
11.0
HC-50/U
HC-50/T
L
13.46
11.0
1.8〜200MHz
Fund，3rd，5th，7th
10μW，50μW，100μW，500μW
Series，12pF,16pF,20pF，32pF（fund.）
8pF,10pF,12pF,16pF（3rd,5th,7th）
−10℃〜＋60℃
−30℃〜＋80℃
UM-4
Ωmax. Ωmax. Ωmax. Ωmax. Ωmax. Ωmax. Ωmax.
UM-5 UM-1
HC-49／T HC-50／T
HC−49／U HC−50／U
1.8〜2.0MHz
2.0〜2.4MHz
2.4〜3.0MHz
3.0〜3.5MHz
3.5〜4.0MHz
4.0〜7.0MHz
7.0〜10MHz
10〜15MHz
15〜20MHz
20〜25MHz

25〜30MHz
30〜75MHz
75〜100MHz
100〜125MHz
125〜150MHz
150〜200MHz

F
F
F
F
F
F
F
F
F
F/3
F/3
3
3/5
5
5
7
–
–
–
–
–
–
–
50
50
50
50
50
50
50
50
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–––––
50/–
50/–50/–
50/–
70 70 70
70/–
80 80 80
80 80 80 80100 100 100
70/80 70/80
120 120
150 150
150 150
90 90
90 90
45 45
45 45
25 25 25 25
25/60 25/60
25/40 25/40 25/40 25/40
40 40 40 40
–/60 –/60 –/60 –/60
60 60 60 60
60 60
35 35
35 35
25/50 25/50
600 600
450 450
350 350
Lmax. 6.05
+ 0.25
−0.38
11.5max.
φ1.02 + 0 . 05
−0.07
5max. Lmax. 20±1
11.5max.
φ0.43 +0.05
−0.02
5max.
※4.88±0.2
※4.88±0.2
L
Lmax. 12.5±1
8max.
φ0.35±0.05
3.5max.
※3.75±0.2
FrequencyRange
VibrationMode
Thickness-shearmode(ATcut)
DriveLevel
LoadCapacitance
FrequencyTolerance（at25℃）
FrequencyToleranceover
Temperature（Ref.to25℃）
OperatingTemperatureRange
StorageTemperatureRange
AgingCharacteristics
SeriesResistance
Type
Frequency
Vibration
Mode
Dimensions[mm]

Crystal Resonators
Features
Consult our sales representative for other specifications or special specifications.
Automaticmountingwithtape&reelformispossible.
※Per dimension closest to the body of the unit.
UM-4
UM-5
4.5
5.8
UM-1 8.5
27
UM-1,UM-5,HC-49/T,HC-49/U
20〜30MHz
30〜35MHz
35〜40MHz
40〜45MHz
UＭ-5 ＵＭ-1 ＨＣ-49/Ｕ
ＨＣ-49/Ｔ
60Ωmax. 10min.
70Ωmax.
70Ωmax.
70Ωmax.
60Ωmax.
60Ωmax.
60Ωmax. 60Ωmax.
50Ωmax.
50Ωmax.
8min.
5min.
4min.
CH1CENTER30040000.00Hz
SPAN200000.00Hz
CH1CENTER10040000.00Hz
SPAN200000.00Hz
Fundamental Mode-suppressing Crystal Resonators (Overtone mode)

※1：CIratio＝ SeriesResistanceofFundamentalMode
SeriesResistanceof3rdOvertoneMode
●FundamentalMode-suppressingCrystalResonators（3rdovertonemode）
（3rdovertone） （FundamentalOscillation）
ExampleofOscillationCircuit
●Standard3rdovertoneCrystalResonators ●FundamentalMode-suppressing
CrystalResonators（3rdovertonemode）
FrequencyRangeandSeriesResistance
Frequency
Type CIratio※1
ExamplesofCharacteristics（30.000MHz）
SuppressionofSpurious
SupprestionofFundamentalOscillation
10μW,50μW,100μW
Series,12pF,16pF,20pF,32pF
±10×10-6,±15×10-6，
±20×10-6,±30×10-6
DriveLevel
LoadCapacitance
FrequencyTolerance（at25℃）
These fundamental mode-sup-
pressing crystal resonators are
designed to selectively suppress
the fundamental oscillation mode
of third-overtone crystal resona-
tors to ensure overtone oscilla-
tion. The resonators enable an
oscillation circuit without a tuning
coil to produce overtone-frequen-
cy oscillation, simplifying circuit
configuration and enabling adjust-
ment-free operation and system
downsizing. Thanks to our design
expertise, these products sup-
press spurious components in
overtone oscillation along with
the fundamental mode, and can
be used safely without frequency
jumps due to spurious compo-
nents in overtone oscillation.
––
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.