srf minimum (mhz) mil dash # (ref.) dash number* inductance (?) tolerance inductance test frequency (mhz) q-test frequency (mhz) q minimum dc resistance maximum (ohms) current rating maximum (ma) 4000 3500 3000 3000 3000 2700 2500 2000 2000 1700 1500 1300 1100 1000 850 720 610 1600 1400 1200 1000 900 800 720 650 590 500 460 430 360 300 290 275 265 250 235 220 170 164 158 155 150 145 142 137 135 131 128 124 123 120 115 113 110 107 104 0.020 0.025 0.030 0.030 0.030 0.040 0.045 0.070 0.070 0.100 0.120 0.160 0.230 0.280 0.380 0.540 0.750 0.11 0.14 0.19 0.28 0.34 0.43 0.56 0.67 0.81 1.15 1.40 1.60 2.30 3.30 3.32 3.70 3.99 4.48 5.07 5.78 5.00 5.80 6.60 7.40 8.00 8.60 8.90 9.60 9.90 10.4 10.9 11.6 11.8 12.5 13.5 14.0 15.0 15.5 16.5 400 400 400 400 400 376 352 320 288 264 240 220 200 176 160 144 132 88 80 76 72 64 56 52 48 42.4 37.6 34.4 32.0 28.8 25.6 20.8 17.6 15.2 12.8 10.4 8.00 5.76 5.36 5.04 4.72 4.48 4.24 4.00 3.76 3.60 3.44 3.20 3.04 2.88 2.80 2.72 2.64 2.48 2.40 2.24 75 75 75 65 65 65 65 60 55 50 50 45 45 45 45 45 45 55 55 60 70 65 65 60 60 65 80 75 75 75 85 80 80 75 75 75 75 65 65 65 65 65 65 65 65 65 65 65 65 60 60 60 60 60 60 60 50 50 50 50 50 45 40 40 25 25 25 25 20 20 15 15 15 10 10 10 7.9 7.9 7.9 7.9 5.0 5.0 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 1.5 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 25 25 25 25 25 25 25 25 25 25 25 25 25 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 7.9 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 0.79 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 0.10 0.12 0.15 0.18 0.22 0.27 0.33 0.39 0.47 0.56 0.68 0.82 1.00 1.20 1.50 1.80 2.20 2.70 3.30 3.90 4.70 5.60 6.80 8.20 10.0 12.0 15.0 18.0 22.0 27.0 33.0 39.0 47.0 56.0 68.0 82.0 100 120 150 180 220 270 300 330 360 390 430 470 510 560 620 680 750 820 910 1000 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 20% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% ?% test methods mil-prf-15305 test methods, only. ms21389-01 to ms21389-17, reference - 1944 series ms21390-01 to ms21390-39, reference - 1945 series physical parameters inches millimeters length 0.420 to 0.447 10.67 to 11.35 diameter 0.168 to 0.193 4.27 to 4.90 lead size awg #22 tcw 0.023 to 0.027 0.584 to 0.686 lead length 1.30 min. 33.02 min. current rating at 90? ambient 35? rise operating temperature ?5? to +125? maximum power dissipation at 90? series 1944: 0.385 w series 1945: 0.330 w packaging tape & reel: 12" reel, 2500 pieces max.; 14" reel, 3000 pieces max. for additional packaging options, see technical section. made in the u.s.a. ms21389 (reference) ? series 1944 phenolic core -01m -02m -03m -04m -05m -06m -07m -08m -09m -10m -11m -12m -13m -14m -15k -16k -17k ms21390 (reference) ? series 1945 iron core -01k -02k -03k -04k -05k -06k -07k -08k -09k -10k -11k -12k -13j -14j -15j -16j -17j -18j -19j -20j -21j -22j -23j -24j -25j -26j -27j -28j -29j -30j -31j -32j -33j -34j -35j -36j -37j -38j -39j optional tolerances: k = 10% j = 5% h = 3% g = 2% f = 1% *complete part # must include series # plus the dash # for further surface ?ish information, refer to technical section of this catalog. 1944r &1945r 1944 &1945 molded unshielded rf coils series page 48 www . delevan . com e-mail: apisales@delevan . com 270 quaker rd., east aurora ny 14052 ? phone 716-652-3600 ? fax 716-652-4814 4/2005 rf inductors
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