hc-49/u 166 glover avenue norwalk, ct 06856 tel: 1-88-vectron-1 fax: 1-888-fax-vectron www.vectron.com quartz crystal units at-cut, 2.4 - 300 mhz all dimensions in mm (max) hc-49/u : x = 13.4 hc-49/11 mm: x = 11.5 hc-49/9 mm: x = 9.8 hc-49/9 mm starting with 4.5 mhz din 45110: m4 iec 122-3: dp nfc-93-601: n 0 5 mil-h-10056: hc-49/u welded metal enclosure (inert atmosphere) with wire leads temperature stability in the temperature range hc-49/u -55c...+105c -20c...+70c nom. temp. 5c 1 ) overtone frequency [mhz] type 50ppm 25ppm 20ppm 10ppm 7ppm 5ppm 2ppm 2.4...5.2 xs 27xx 01 02 03 04 06 ----- 05 1.ot 5.2...10 xs 27xx 01 02 03 04 06 07 05 10...30 xs 28xx 01 02 03 04 06 07 05 3.ot 20...100 xs 28xx 11 12 13 14 16 17 15 5.ot 50...160 xs 29xx 01 02 03 04 06 07 05 7.ot 110...210 xs 30xx 01 02 03 04 06 07 05 9.ot 150...300 xs 31xx 01 02 03 04 06 07 05 calibration tolerance: 10 ppm 1 ) nom. temp. = nominal temperature for oven application to be given with the order. motional resistance r1 overtone frequency [mhz] r1max [ w ] standard resonance for fundamental crystals: load resonance with c l = 30 0.5pf overtone crystals: series mode 1. ot 2.4...3 250 shunt capacitance: c 0 = 7pf max 1. ot 3...5.2 120 1. ot 5.2...6 80 1. ot 6...8 60 1. ot 8...10 40 1. ot 10...15 30 1. ot 15...35 25 3. ot 20...10 0 40 5. ot 50...160 60 7. ot 110...210 100 9. ot 150...300 200 crystal units with different tolerances or additional data upon request. modifications: hc-49/u-3, hc-49/11mm-3, hc-49/9mm-3: 3rd wire (ground) hc-49/u-s, hc-49/11mm-s: 3-point mounting for exposure to extreme accelerations (shock and vibr.) hc-49/u-3-s, hc-49/11mm-3-s: 3-point mounting for exposure to extreme accelerations (shock and vibr.) smd-versions with metal clip. 13.7 x 10.0 3.6 ? ? 0.48 4.5 4.9 11.0
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