 |  | 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 |
| Type | UM-1, UM-5, UM-4 CRYSTAL UNITS | | Frequency range | Fundamental
| 10.0~45.0MHz | | 3rd | 35.0~120MHz | | Vibration mode | AT cut, Fundamental, 3rd, 5th | | Frequency tolerance(at 25oC) | - /+10PPM~ | | Equivalent series resistance | See table No.1 | | Stability(-20~+70oC) | - /+5PPM~ | | Shunt capacitance | 5.0 max. | | Load capacitance | Series resonance, 16pF, 20pF, 30pF | | Insulation resistance | 500 M ohms //DC 100V | | Shock | Natural drop from 75cm height onto a hard wooden
board, three times dF/F=±3ppm max. | | Vibration | The crystal units shall be capable of with standing each one hour in 3 directions 10-55Hz amplitude 1.5mm Fs=±3.0ppm max.
ESR:- /+2.0 ohms or 15% whichever is larger | | Leak | 5*10^-8 atm.cc/sec max. | | Aging | - / +2ppm / year |
Equivalent series resistance(ESR) Table No. 1 | Frequency | Mode | ESR | | 10.0~11.9 MHz | Fundamental | 40 ohms max. | | 12.0~14.9 MHz | Fundamental | 30 ohms max. | | 15.0~45.0MHz | Fundamental | 25 ohms max. | | 35.0~44.9 MHz | O3 | 50 ohms max. | | 45.0~54.9MHz | O3 | 45 ohms max. | | 55.0~59.9MHz | O3 | 40 ohms max. | | 60.0~120.0MHz | O3 | 35 ohms max. |
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