hc-51/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, 0.8 - 300 mhz all dimensions in mm (max) din 45110: k6b iec 122-3: dz nfc-93-601: n 0 2a mil-h-10056: hc-51/u welded metal enclosure (inert atmospher e) with wire leads temperature stability in the temperature range hc-51/u -55c...+105c -20c..+70c nom.temp. 5c 1 ) overtone frequency [mhz] type 50ppm 25ppm 20ppm 10ppm 7ppm 5ppm 2ppm 0.8...3.0 xs 17xx 01 02 03 04 06 ----- 05 1.ot 3.0...8.0 xs 18xx 01 02 03 04 06 07 05 8.0...30 xs 19xx 01 02 03 04 06 07 05 3.ot 15...90 xs 20xx 01 02 03 04 06 07 05 5.ot 50...160 xs 21xx 01 02 03 04 06 07 05 7.ot 110...210 xs 21xxx 01a 02a 03a 04a 06a 07a 05a 9.ot 150...300 xs 21xxx 01b 02b 03b 04 06b 07b 05b calibration tolerance: 10 ppm 1 )nom. temp. = nominal temperature for oven application to be given with the order. motional resistance r1 overtone frequenc y [mhz] r1max [ w ] standard resonance for fundamental crystals: load resonance with c l = 30 0.5pf overtone crystals: series mode 1. ot 0.8...1.5 800 shunt capacitance: c 0 = 7pf max 1. ot 1.5...2.0 500 1. ot 2.0...3.0 200 1. ot 3.0...5.0 80 1. ot 5.0...8.0 40 1. ot 8.0...15 30 1. ot 15...30 20 3. ot 15...90 40 5. ot 40...150 60 7. ot 100...210 100 9. ot 150...300 180 crystal units with different tolerances or additional data upon request. modifications: hc-51/u-s; 0.8 - 1, 5mhz: 6-point mounting for exposure to extreme accelerations (shock and vibration). 19.4 12.34 9.1 17.88 7.62 19.7 13.7 ? ? 0.83
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