? coilcraft, inc. 2005 specifications subject to change without notice. please check our website for latest information. document 108-1 document 108-1 revised 08/15/05 10 mm tunable coils C 142, 143, 144 series these coilcraft variable inductors are precision molded in plastic to ensure constant winding pitch and a consis- tent relationship to the printed circuit board. extremely economical, even in small quantities, the coils come in standard inductance values from 0.05 h to 1.5 h. 144 series parts are also available with a tap to meet specific requirements. tuning is done by means of a threaded powdered iron core with a hex socket for easy, positive adjustment. plated brass shield cans with solderable tabs are optional. these parts can be odered without cores for use as fixed inductors. coilcraft designer?s kit m102 contains samples of all standard 10 mm and 7 mm tunable inductors. to order, contact coilcraft or visit http://order.coilcraft.com to purchase on-line. unshielded styles with shield can 3 tools in 1 tuning wrench trituner see index 0.750 (0.531*) 19,05 (13,49*) 0.157 0.010 3,99 0,25 0.060 0.010 1,52 0,25 max tab length 0.197 5,00 dia *142 series only 0.411 10,44 max start finish 0.375 9,53 tab centers 0.704 (0.470*) 0.020 17,88 (11,94*) 0,51 0.138 0.040 3,5 1,02 0.025 0.002 0,635 0,05 dia 0.380 0.005 9,65 0,13 square start finish 0.276 0.007 7,01 0,18 0.276 0.007 7,01 0,18 recommended board layout c l c l 0.138 3,505 0.138 3,505 0.1875 4,76 (2) 0.045 1,143 0.197 5,00 (optional, for tuning through the board) 0.080 2,03 (for shield can tabs)
? coilcraft, inc. 2005 specifications subject to change without notice. please check our website for latest information. document 108-2 document 108-2 revised 01/03/05 no core dcr part no core l 2 l min 3 l nom l max srf min max i rms 5 number 1 color turns ref (h) (h) (h) (h) q min 4 (mhz) (mohm) (a) 144-01j12 brown 1? 0.053 0.056 0.059 0.062 140 1800 7.4 11.0 144-02j12 red 2? 0.075 0.079 0.088 0.098 145 1150 8.6 10.0 144-03j12 orange 3? 0.099 0.104 0.123 0.142 147 900 9.7 9.6 144-04j12 yellow 4? 0.126 0.132 0.164 0.195 150 765 10.9 9.0 144-05j12 green 5? 0.154 0.162 0.207 0.252 154 670 12.1 8.6 144-06j12 blue 6? 0.182 0.193 0.250 0.306 154 610 13.6 8.1 144-07j12 violet 7? 0.214 0.240 0.298 0.356 158 525 14.7 7.8 144-08j12 gray 8? 0.245 0.283 0.344 0.405 160 465 15.9 7.5 144-09j12 white 9? 0.274 0.328 0.387 0.446 162 420 17.1 7.2 144-10j12 black 10? 0.307 0.391 0.442 0.493 162 390 18.5 7.0 142-01j08 brown 1? 0.063 0.063 0.065 0.068 115 980 7.4 13.4 142-02j08 red 2? 0.092 0.093 0.100 0.107 118 600 8.4 12.5 142-03j08 orange 3? 0.127 0.133 0.145 0.157 120 470 9.6 11.8 142-04j08 yellow 4? 0.166 0.174 0.196 0.218 125 420 10.8 11.1 142-05j08 green 5? 0.212 0.226 0.256 0.287 122 370 11.9 10.5 142-06j08 blue 6? 0.258 0.275 0.315 0.355 112 340 13.2 10.0 142-07j08 violet 7? 0.307 0.330 0.378 0.427 112 310 14.5 9.6 142-08j08 gray 8? 0.357 0.396 0.450 0.504 106 290 15.7 9.2 142-09j08 white 9? 0.412 0.473 0.520 0.567 110 270 16.9 8.9 142-10j08 black 10? 0.464 0.550 0.592 0.635 104 260 18.0 8.6 143-09j12 white 9? 0.385 0.404 0.550 0.693 86 280 16.7 7.3 143-10j12 black 10? 0.438 0.460 0.624 0.788 90 270 17.9 7.1 143-11j12 brown 11? 0.490 0.515 0.708 0.900 78 260 19.2 6.8 143-12j12 red 12? 0.545 0.578 0.764 0.950 84 250 20.5 6.6 143-13j12 orange 13? 0.600 0.673 0.845 1.02 84 245 21.7 6.4 143-14j12 yellow 14? 0.645 0.726 0.908 1.09 82 240 22.8 6.3 143-15j12 green 15? 0.692 0.803 0.978 1.15 90 230 23.9 6.1 143-16j12 blue 16? 0.765 0.891 1.08 1.27 74 225 25.2 6.0 143-17j12 violet 17? 0.830 1.01 1.18 1.34 74 215 26.4 5.8 143-18j12 gray 18? 0.895 1.10 1.25 1.40 92 195 27.6 5.7 143-19j12 white 19? 0.910 1.20 1.32 1.44 98 190 28.9 5.6 143-20j12 black 20? 0.960 1.30 1.40 1.50 92 185 30.0 5.5 no core dcr part no core l 2 l min 3 l nom l max srf min max i rms 5 number 1 color turns ref (h) (h) (h) (h) q min 4 (mhz) (mohm) (a) 144-01j12s brown 1? 0.050 0.052 0.053 0.054 97 2200 7.4 11.0 144-02j12s red 2? 0.067 0.070 0.074 0.078 98 1200 8.6 10.0 144-03j12s orange 3? 0.088 0.092 0.099 0.106 98 920 9.7 9.6 144-04j12s yellow 4? 0.106 0.111 0.122 0.133 100 790 10.9 9.0 144-05j12s green 5? 0.126 0.132 0.149 0.165 101 685 12.1 8.6 144-06J12S blue 6? 0.147 0.154 0.175 0.196 106 625 13.6 8.1 144-07j12s violet 7? 0.168 0.176 0.200 0.223 104 530 14.7 7.8 144-08j12s gray 8? 0.190 0.202 0.226 0.250 108 480 15.9 7.5 144-09j12s white 9? 0.210 0.239 0.256 0.274 108 435 17.1 7.2 144-10j12s black 10? 0.232 0.270 0.282 0.295 106 420 18.5 7.0 142-01j08s brown 1? 0.058 0.058 0.0595 0.061 82 1230 7.4 13.4 142-02j08s red 2? 0.081 0.084 0.086 0.089 83 650 8.4 12.5 142-03j08s orange 3? 0.110 0.115 0.120 0.121 85 550 9.6 11.8 142-04j08s yellow 4? 0.140 0.147 0.156 0.160 88 460 10.8 11.1 142-05j08s green 5? 0.174 0.182 0.197 0.205 94 410 11.9 10.5 142-06j08s blue 6? 0.210 0.220 0.240 0.248 94 370 13.2 10.0 142-07j08s violet 7? 0.247 0.259 0.280 0.290 90 330 14.5 9.6 142-08j08s gray 8? 0.284 0.299 0.322 0.337 86 320 15.7 9.2 142-09j08s white 9? 0.319 0.338 0.363 0.377 88 310 16.9 8.9 142-10j08s black 10? 0.357 0.382 0.410 0.422 82 290 18.0 8.6 143-09j12s white 9? 0.300 0.315 0.369 0.423 80 303 16.7 7.3 143-10j12s black 10? 0.338 0.355 0.416 0.477 82 290 17.9 7.1 143-11j12s brown 11? 0.377 0.396 0.468 0.540 78 270 19.2 6.8 143-12j12s red 12? 0.412 0.433 0.509 0.585 80 265 20.5 6.6 143-13j12s orange 13? 0.452 0.475 0.556 0.637 80 265 21.7 6.4 143-14j12s yellow 14? 0.490 0.515 0.604 0.693 78 260 22.8 6.3 143-15j12s green 15? 0.522 0.583 0.660 0.738 80 250 23.9 6.1 143-16j12s blue 16? 0.575 0.638 0.720 0.801 76 245 25.2 6.0 143-17j12s violet 17? 0.612 0.693 0.770 0.846 76 240 26.4 5.8 143-18j12s gray 18? 0.650 0.754 0.814 0.874 82 215 27.6 5.7 143-19j12s white 19? 0.675 0.792 0.846 0.900 80 210 28.9 5.6 143-20j12s black 20? 0.715 0.847 0.896 0.945 74 200 30.0 5.5 1. to order fixed inductance parts without cores, eliminate the ?j08? or ?j12?, e.g. 144-01 or 144-01s. 2. inductance and q readings taken on boonton 260-a q meter with 16 awg tinned copper 1 / 2 long soldered along leads and bent at 90 1 / 4 down from standoffs. all inductance values greater than 0.1 h read at recommended q meter frequency; those below 0.1 h calculated from readings taken at 50 mhz. 3. l min measured with core halfway out top of form. 4. q min measured at l nom at 40 mhz. 5. average current for a 40c rise above 25c ambient. 6. core material: carbonyl j core length: 142 series - 1 / 4 143, 144 series - 3 / 8 7. taps available on 144 series parts at 1 / 8 , 3 / 8 , 5 / 8 and 7 / 8 turn increments. 8. operating temperature range ? 40c to +85c. 9. electrical specifications at 25c. unshielded shielded
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