next assembly all dimensions are in mm/inch unless otherwise specified drawn by: checked by: wm approved by: scale: n.a. sheet 1 of 1 16 apr 0 8 date: ? vue ? cage code: drawing title: drawing number: r26-32.768-12.5-x-clip-tr- ns 1 ltr revisions date approved initial release a 16 ju l 0 7 tuning fork crystal unit 2x6mm smd lead form type with clip reflow compatible 32.768 khz, 20 ppm specifica tions nominal frequency: 32.768 khz frequency tolerance: 20 ppm maximum turnover temperature: +25c 5c temper a ture characteristic, k (note 1): -0.03 5 ppm/ c 2 (typical) quality factor: 60,000 (typical) nominal load capacitance: 12.5 pf equi v alent series resis t ance: 6 5 k ohms maximum drive level: 1 u w m axi mu m motional ca p aci t ance: 2. 1 pf shunt ca p aci t ance: 0. 9 pf ty pica l capacitance ratio: 460 (typical) aging: 3 ppm maximum first year insul a tion resis t ance: 500 m ohms minimum operating temperature range: -40c to +85c storage temperature range: -55c to +125c package: 2mm x 6.5mm cylindrical metal can with formed leads shock resistance: 3000g x 0.3ms x 1/2 sinewave in each of three axes p ackaging: 16mm t aping, 8mm pitch, 3 000 units per reel note 1: frequency deviation at temperature t is given as: f/f = k (t o - t) 2 , where k is parabolic curve constant p ackage dimensions note: this drawing is a sales document for reference only. other options are available. please consult raltron.
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