leaded crystal phone: +86 (10) 5820-3910 fax: +86 (10) 5820-3915 email: sales@vanlong.com web: http://www.v anlong.com ? 2006 by vanlong technology co., ltd. u m 1 miniature resistance weld crystal UM1 the UM1 series is a at-cut crystal housed in a miniature resistance weld package that provides for an excellent hermetic seal and frequency aging. this high quality crystal offers a smaller footprint in a wide frequency range. rohs compliant specifications: um-1 frequency range: 6.0 mhz ~ 45 mhz fundamental 25 mhz ~ 200 mhz overtone all dimensions are in mm operating temperature: 0 c ~ +50 c -a -10 c ~ +60 c -b -20 c ~ +70 c -c -40 c ~ +85 c -l storage temperature: -55 c ~ +125 c frequency tolerance: 50 ppm -50 (at 25 c) 30 ppm -30 20 ppm -20 10 ppm -10 frequency stability: 50 ppm -50 (over temperature range) 30 ppm -30 20 ppm -20 10 ppm -10 circuit condition: 10 pf ~ 32 pf or series equivalent series resistance: maximum resistance corresponds to frequency. please see esr table. drive level: 100 w max shunt capacitance: 7 pf max ordering information aging: 3 ppm max per year product name + cl + operating temperature range + tolerance + stability + other code + frequency. i.e. UM1-20-c-30-30-f-24.000mhz optional features: fundamental -f 3 rd ,5 th ,7 th o.t. -3,5,7 tape & reel -tr note: 1. other frequencies, tolerances, stabilities, and operating temperature ranges available. consult vtc support for specific requirements. 2. not all combinations of the above tolerances, stabilities, and temperature ranges are available. consult vtc support if your requirement is not standard. 3. all specifications subject to change without notice.
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