? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. document 108-1 document 108-1 revised 09/18/08 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 con- sistent 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 ordered without cores for use as fixed inductors. coilcraft designer?s kit m302 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 terminations: series 142 and 143 leads: tin-silver over copper series 144 leads: matte tin over copper shield can tabs: tin-silver over nickel over brass 0.750 19,05 0.531 13,49 0.157 0.010 3,99 0,25 0.060 0.010 1,52 0,25 max max tab length 0.197 5,00 dia 0.411 10,44 start finish 0.375 9,53 tab centers 0.704 0.020 17,88 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 sq max 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) 0.470 0.020 11,94 0,51 (142 series only) (142 series only) unshielded with shield can weight: 142 series 1.39 ? 1.82 g 1.64 ? 2.16 g 143 series 1.75 ? 2.40 g 2.85 ? 3.54 g 144 series 1.22 ? 1.74 g 2.35 ? 2.91 g resistance to soldering heat: wave solder only. recommended maximum board surface temperature of 168c (334f) for no more than three seconds. pre-heating is recommended to minimize time over the solder nozzle.
? coilcraft, inc. 2010 specifications subject to change without notice. please check our website for latest information. document 108-2 document 108-2 revised 09/18/08 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 nom (nh) (nh) (nh) (nh) q min 4 (mhz) (mohm) (a) 144-01j12l brown 1? 53 56 59 62 140 1800 7.4 11.0 144-02j12l red 2? 75 79 88 98 145 1150 8.6 10.0 144-03j12l orange 3? 99 104 123 142 147 900 9.7 9.6 144-04j12l yellow 4? 126 132 164 195 150 765 10.9 9.0 144-05j12l green 5? 154 162 207 252 154 670 12.1 8.6 144-06j12l blue 6? 182 193 250 306 154 610 13.6 8.1 144-07j12l violet 7? 214 240 298 356 158 525 14.7 7.8 144-08j12l gray 8? 245 283 344 405 160 465 15.9 7.5 144-09j12l white 9? 274 328 387 446 162 420 17.1 7.2 144-10j12l black 10? 307 391 442 493 162 390 18.5 7.0 142-01j08l brown 1? 63 63 65 68 115 980 7.4 13.4 142-02j08l red 2? 92 93 100 107 118 600 8.4 12.5 142-03j08l orange 3? 127 133 145 157 120 470 9.6 11.8 142-04j08l yellow 4? 166 174 196 218 125 420 10.8 11.1 142-05j08l green 5? 212 226 256 287 122 370 11.9 10.5 142-06j08l blue 6? 258 275 315 355 112 340 13.2 10.0 142-07j08l violet 7? 307 330 378 427 112 310 14.5 9.6 142-08j08l gray 8? 357 396 450 504 106 290 15.7 9.2 142-09j08l white 9? 412 473 520 567 110 270 16.9 8.9 142-10j08l black 10? 464 550 592 635 104 260 18.0 8.6 143-09j12l white 9? 385 404 550 693 86 280 16.7 7.3 143-10j12l black 10? 438 460 624 788 90 270 17.9 7.1 143-11j12l brown 11? 490 515 708 900 78 260 19.2 6.8 143-12j12l red 12? 545 578 764 950 84 250 20.5 6.6 143-13j12l orange 13? 600 673 845 1020 84 245 21.7 6.4 143-14j12l yellow 14? 645 726 908 1090 82 240 22.8 6.3 143-15j12l green 15? 692 803 978 1150 90 230 23.9 6.1 143-16j12l blue 16? 765 891 1080 1270 74 225 25.2 6.0 143-17j12l violet 17? 830 1010 1180 1340 74 215 26.4 5.8 143-18j12l gray 18? 895 1100 1250 1400 92 195 27.6 5.7 143-19j12l white 19? 910 1200 1320 1440 98 190 28.9 5.6 143-20j12l black 20? 960 1300 1400 1500 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 nom (nh) (nh) (nh) (nh) q min 4 (mhz) (mohm) (a) 144-01j12sl brown 1? 50 52 53 54 97 2200 7.4 11.0 144-02j12sl red 2? 67 70 74 78 98 1200 8.6 10.0 144-03j12sl orange 3? 88 92 99 106 98 920 9.7 9.6 144-04j12sl yellow 4? 106 111 122 133 100 790 10.9 9.0 144-05j12sl green 5? 126 132 149 165 101 685 12.1 8.6 144-06j12sl blue 6? 147 154 175 196 106 625 13.6 8.1 144-07j12sl violet 7? 168 176 200 223 104 530 14.7 7.8 144-08j12sl gray 8? 190 202 226 250 108 480 15.9 7.5 144-09j12sl white 9? 210 239 256 274 108 435 17.1 7.2 144-10j12sl black 10? 232 270 282 295 106 420 18.5 7.0 142-01j08sl brown 1? 58 58 59.5 61 82 1230 7.4 13.4 142-02j08sl red 2? 81 84 86 89 83 650 8.4 12.5 142-03j08sl orange 3? 110 115 120 121 85 550 9.6 11.8 142-04j08sl yellow 4? 140 147 156 160 88 460 10.8 11.1 142-05j08sl green 5? 174 182 197 205 94 410 11.9 10.5 142-06J08SL blue 6? 210 220 240 248 94 370 13.2 10.0 142-07j08sl violet 7? 247 259 280 290 90 330 14.5 9.6 142-08j08sl gray 8? 284 299 322 337 86 320 15.7 9.2 142-09j08sl white 9? 319 338 363 377 88 310 16.9 8.9 142-10j08sl black 10? 357 382 410 422 82 290 18.0 8.6 143-09j12sl white 9? 300 315 369 423 80 303 16.7 7.3 143-10j12sl black 10? 338 355 416 477 82 290 17.9 7.1 143-11j12sl brown 11? 377 396 468 540 78 270 19.2 6.8 143-12j12sl red 12? 412 433 509 585 80 265 20.5 6.6 143-13j12sl orange 13? 452 475 556 637 80 265 21.7 6.4 143-14j12sl yellow 14? 490 515 604 693 78 260 22.8 6.3 143-15j12sl green 15? 522 583 660 738 80 250 23.9 6.1 143-16j12sl blue 16? 575 638 720 801 76 245 25.2 6.0 143-17j12sl violet 17? 612 693 770 846 76 240 26.4 5.8 143-18j12sl gray 18? 650 754 814 874 82 215 27.6 5.7 143-19j12sl white 19? 675 792 846 900 80 210 28.9 5.6 143-20j12sl black 20? 715 847 896 945 74 200 30.0 5.5 1. to order fixed inductance parts without cores, eliminate the ?j08? or ?j12?, e.g. 144-01l or 144-01sl. 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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