57 crystal units crystal units for microprocessor (at-51) technical guidance (at-51) equivalent series resistance (r 1 ) dimensions shunt capacitance (c 0 ) motional capacitance (c 1 ) features 8 at-51 crystal units can provide a great number of standard frequencies and have a wide range of applications. in addition, taping type and gull-wing type are available for automatic mounting. specification 10.10 max 3.70 max ?0.43 20 1 +0.05 ?.03 4.88 0.20 5.08 max 4.65 max 11.05 max 1 5 10 20 50 100 50 100 150 freq (mhz) r 1 ( ? ) fundamental 3rd overtone 4 8 10 co (pf) 6 2 0 10 1 freq (mhz) 100 3rd overtone fundamental 100.0 c1 (ff) 1.0 0.1 10 1 freq (mhz) 100 3rd overtone fundamental 10.0 (max) (typical) (typical) (mm) at-51 frequency range overtone temperature characteristics operating temp. range frequency tolerance equivalent series resistance load capacitance table 6 (at-51) table 6 (at-51) ?0 10 -6 ?0 ~ +60? ?0 10 -6 (at 25?) table 6 (at-51) table 6 (at-51) measuring circuit: ci meter standard load capacitance may vary depending on the frequency. drive level 3.541 mhz min 3.541 mhz max (fundamental), (fundamental) 3rd overtone 50? (1000? max) 500? (1000? max) standard load capacitance fundamental 3rd overtone 16pf series
59 crystal units table 6 standa r d frequencies and specifications ( a t - 5 1 ) standard frequency (mhz) 3.1875 3.2000 3.250 3.2768 3.3939 3.541 3.5712 3.575611 3.579545 3.581 3.582056 3.583125 3.600 3.6385 3.640 3.648 3.666 3.6864 3.700 3.72827 3.7343 3.794 3.802 3.840 3.862625 3.8912 3.928231 3.93216 3.9672 3.976 3.992 3.9935 3.996 4.000 4.0015 4.00896 4.011 4.021 4.02797 4.032 4.045 4.048 4.055 4.096 4.1334 4.138 4.1472 4.192 4.194304 4.200 4.202 4.210 4.286 4.2944 4.2986 4.3008 4.332 4.380 4.400 4.40625 4.4112 4.430 4.433619 4.4361875 4.500 4.5511 4.5568 4.58496 4.608 4.619 4.6957 4.700 4.704 4.750 4.767 4.7727 4.790594 4.800 4.807284 4.883 4.900 4.90625 4.907029 4.9152 4.917 4.9378 4.955 4.981 5.000 5.011 5.013504 5.0688 5.0706 5.089 5.103 5.1056 5.120 5.2553 5.333333 5.390623 5.439488 5.5296 5.6196 5.6448 5.699525 5.72727 5.7285 5.760 5.824 5.850 5.85938 5.910 5.94755 5.955 5.9904 5.993 6.000 6.017 6.144 6.176 6.2308 6.236 6.291 6.29365 6.300 6.3488 6.400 6.4512 6.47168 6.500 8.545 8.550 8.6436 8.664 8.867238 8.80435 9.000 9.015 9.0744 9.0905 9.110192 9.14076 9.216 9.233016 9.30213 9.3389 9.342812 9.371603 9.392 9.408 9.437184 9.475 9.495 9.53125 9.50938 9.5808 9.600 9.658 9.8122 9.820 9.82656 9.8304 9.84375 9.84498 9.85781 9.915597 9.924 9.92674 9.951 9.97699 9.982 9.984 9.998 10.000 10.002 10.005 10.008 10.010 10.012 10.0187 10.050 10.157 10.17813 10.200 10.215 10.220 10.240 10.245 10.250 10.255 10.258888 10.260 10.320 10.350 10.368 10.43847 10.500 10.620 10.6935 10.695 10.700 10.73863 10.752 10.7803 11.000 11.0592 11.112 11.150 11.1552 11.160 11.250 11.268 11.2896 11.400 11.500 11.520 11.534336 11.54127 11.580224 11.6736 11.71876 11.7375 11.80128 11.880 11.890 11.8951 11.9318 11.94375 11.9808 11.98135 12.000 12.0072 12.057 12.1528 12.15871 12.160 12.288 12.352 12.3678 12.480 12.500 12.544 12.58291 12.586875 12.5884 12.740625 12.754843 12.800 12.8832 12.9024 13.000 13.050 13.150 13.2256 13.300 13.336 13.400 13.40155 13.500 13.5168 15.994 15.996 16.000 16.0096 16.010 16.020 16.104 16.11182 16.128 16.200 16.257 16.273 16.281 16.3006 16.325376 16.345 16.380 16.384 16.385 16.416 16.5567 16.5888 16.590 16.600 16.610 16.615 16.620 16.625 16.630 16.640 16.6433 16.64728 16.6567 16.6633 16.666 16.670 16.77721 16.800 16.820 16.900 16.9344 16.99301 17.100 17.2032 17.2872 17.30778 17.445 17.57814 17.625 17.6632 17.700 17.734475 17.776 17.800 17.842656 17.860 17.900 17.920 18.000 18.080 18.084 18.140 18.200 18.2202 18.229153 18.285714 18.2912 18.355 18.432 18.4408 18.560 18.62514 18.69217 18.752 18.816 18.868 18.9375 19.005408 19.045 19.069928 19.0856 19.0909 19.13856 19.180 19.200 19.25 19.3125 19.350 19.401256 19.434904 19.440 19.456 19.500 19.600 19.6608 19.670 19.71495 19.800 19.8437 19.8975 19.90656 19.9465 19.968 19.975 19.9825 19.9937 19.995 20.000 20.0013 20.005 20.0125 20.013 20.025 20.134875 20.13985 20.200 20.250 20.284 20.400 20.4066 20.460 20.480 20.517813 20.61612 20.736 20.791387 20.945 20.950 21.000 21.0526 21.120 21.173 21.245 21.400 21.4631 21.47727 21.524476 21.5606 21.600 21.811 22.000 22.1184 22.500 22.550 22.5792 22.7692 22.800 22.846 22.902 22.909088 22.90988 22.953 23.040 23.067 23.178 23.19314 23.328 23.684 23.940 24.000 24.192 24.300 24.450 24.540 24.576 24.586 25.000 25.172 25.175 25.42656 26.800 26.900 27.000 27.500 27.600 27.750 27.97185 28.224 28.375 28.4961 28.4971 28.500 28.63636 13.560 13.574 13.600 13.631488 13.750 13.760 13.80030 13.824 13.86092 13.875 14.180 14.1875 14.21875 14.2375 14.280 14.2848 14.30244 14.31818 14.320 14.328224 14.3728 14.400 14.484 14.500 14.572268 14.576198 14.592 14.6102 14.700 14.721 14.725 14.744 14.7456 14.770 14.800 14.815 14.850 14.865 14.910504 14.9946 15.000 15.0528 15.1983 15.300 15.360 15.500 15.520 15.5367 15.5433 15.5567 15.570 15.5767 15.590 15.600 15.610 15.6233 15.625 15.6433 15.6567 15.6672 15.800 15.900 15.970 15.9744 15.990784 6.510 6.5268 6.545 6.550 6.552 6.5536 6.570 6.573882 6.575 6.5863 6.6667 6.68767 6.75663 6.76438 6.77219 6.810 6.815744 6.8985 6.9666 6.9707 6.9732 6.9988 7.0013 7.15909 7.175 7.200 7.250 7.352 7.3728 7.3764 7.38641 7.67386 7.680 7.86432 7.984 7.9872 7.994 8.000 8.0048 8.008 8.009 8.015 8.0256 8.042 8.050 8.062 8.064 8.065 8.188 8.192 8.200 8.215 8.250 8.2944 8.318091 8.319315 8.3809 8.388 8.388608 8.3935 8.400 8.410 8.448 8.4672 8.486
60 crystal units standard frequency (mhz) <3rd overtone> 26.000 26.412 26.5625 26.600 26.66488 26.718 26.800 27.000 27.040 27.145 27.300 27.320 27.648 27.778 27.780 28.30150 28.319 28.63636 28.800 29.000 29.044 29.1429 29.200 29.40416 29.4912 29.498928 29.650 29.974 30.000 30.720 30.875 30.900 31.000 31.330 31.334 31.500 31.700 31.9488 31.950 32.000 32.164 32.215905 32.256 32.514 32.576 32.579 32.768 32.800 33.000 33.030 33.300 33.330 33.333 33.340 33.8688 34.000 34.200 34.368 34.540 34.5744 34.992 35.000 35.190 35.2512 35.328 35.557 36.000 36.750 36.860 36.864 37.632 38.000 38.880 38.900 38.912 39.000 39.168 39.3216 39.590 39.750 39.800 39.820 39.950 39.960 39.965 40.000 40.230 40.235 40.320 40.5 40.570 40.609 40.960 41.472 41.539 42.000 42.336 42.9145 42.9545 43.550 44.2368 44.400 44.440 44.4444 44.545 44.900 45.000 45.1584 45.600 45.900 46.200 46.4333 47.9232 48.000 48.384 48.540 48.640 49.152 49.34268 49.381 49.500 49.535 49.800 49.830 50.000 50.350 50.691667 51.200 52.000 52.416 53.693175 53.750 54.000 54.050 54.165 54.200 54.315 55.000 56.000 56.125 56.448 57.000 58.250 60.000 61.500 61.560 62.000 62.500 64.000 65.000 65.536 66.000 66.660 66.6667 70.000 75.000 fundamental 3rd overtone 400max 250max 150max 120max 100max 80max 70max 60max 50max 40max 140max 100max 80max 3.1875~3.2 3.2~3.5 3.5~4.0 4.0~4.5 4.5~5.0 5.0~6.0 6.0~8.0 8.0~10.0 10.0~12.0 12.0~ 26.0~35.0 35.0~48.0 48.0~ overtone standard frequency (mhz) equivalent series resistance ( ? )
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