UM-1，UM-5，UM-4
Crystal UNITS
Features  
A resistance weld completely sealed type
Excellent frequency temperature characteristics extending across a wide temperature range.
Excellent aging characteristics.
RoHS compliant and lead free.
Type
UM-1，UM-5，UM-4
Freq. range Fundamental
8.0 ~ 70.0MHz
3rd
35.0 ~ 200MHz
Vibration mode
AT cut , Fundamental, 3rd
Frequency tolerance（at 25°C）
-/+10ppm , -/+30ppm , or specify
Equivalent series resistance
See table No.1
Frequency stability over
operating temperature range
-/+10ppm , -/+30ppm , or specify
Operating temperature range
-10 ~ +60°C , or specify
Drive Level
300uW Max.
Shunt capacitance
5.0pF Max.
Load capacitance
16pF, 18pF, 20pF, or specify
Aging
-/+2ppm/year，-/+5ppm/year

Equivalent series resistance(ESR) Table No.1
Frequency Mode ESR
8.0~11.9 MHz
 Fundamental 50 ohms Max.
12.0~14.9 MHz Fundamental 30 ohms Max.
15.0~70.0 MHz
 Fundamental 25 ohms Max.
35.0~44.9 MHz 3rd 50 ohms Max.
45.0~54.9 MHz 3rd 45 ohms Max.
55.0~200.0 MHz 3rd 40 ohms Max.
Dimensions