COILCRAFT 144-03J12SL

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Item Description: Variable Inductors 144 Unicoil Tunable 9.7 mOhms 9.6 A

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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

© Coilcraft, Inc. 2008
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
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 µH
to 1.5 µH. 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 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 168°C (334°F) for no more than three seconds.
Pre-heating is recommended to minimize time over the solder nozzle.
© Coilcraft, Inc. 2008
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 Irms
5
number
1
Color Turns nom (nH) (nH) (nH) (nH) Q min
4
(MHz) (mOhm) (A)
144-01J12L Brown 53 56 59 62 140 1800 7.4 11.0
144-02J12L Red 2½ 75 79 88 98 145 1150 8.6 10.0
144-03J12L Orange 99 104 123 142 147 900 9.7 9.6
144-04J12L Yellow 126 132 164 195 150 765 10.9 9.0
144-05J12L Green 5½ 154 162 207 252 154 670 12.1 8.6
144-06J12L Blue 182 193 250 306 154 610 13.6 8.1
144-07J12L Violet 214 240 298 356 158 525 14.7 7.8
144-08J12L Gray 245 283 344 405 160 465 15.9 7.5
144-09J12L White 274 328 387 446 162 420 17.1 7.2
144-10J12L Black 10½ 307 391 442 493 162 390 18.5 7.0
142-01J08L Brown 63 63 65 68 115 980 7.4 13.4
142-02J08L Red 92 93 100 107 118 600 8.4 12.5
142-03J08L Orange 127 133 145 157 120 470 9.6 11.8
142-04J08L Yellow 166 174 196 218 125 420 10.8 11.1
142-05J08L Green 212 226 256 287 122 370 11.9 10.5
142-06J08L Blue 258 275 315 355 112 340 13.2 10.0
142-07J08L Violet 307 330 378 427 112 310 14.5 9.6
142-08J08L Gray 357 396 450 504 106 290 15.7 9.2
142-09J08L White 412 473 520 567 110 270 16.9 8.9
142-10J08L Black 10½ 464 550 592 635 104 260 18.0 8.6
143-09J12L White 385 404 550 693 86 280 16.7 7.3
143-10J12L Black 10½ 438 460 624 788 90 270 17.9 7.1
143-11J12L Brown 11½ 490 515 708 900 78 260 19.2 6.8
143-12J12L Red 12½ 545 578 764 950 84 250 20.5 6.6
143-13J12L Orange 13½ 600 673 845 1020 84 245 21.7 6.4
143-14J12L Yellow 14½ 645 726 908 1090 82 240 22.8 6.3
143-15J12L Green 15½ 692 803 978 1150 90 230 23.9 6.1
143-16J12L Blue 16½ 765 891 1080 1270 74 225 25.2 6.0
143-17J12L Violet 17½ 830 1010 1180 1340 74 215 26.4 5.8
143-18J12L Gray 18½ 895 1100 1250 1400 92 195 27.6 5.7
143-19J12L White 19½ 910 1200 1320 1440 98 190 28.9 5.6
143-20J12L Black 20½ 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 Irms
5
number
1
Color Turns nom (nH) (nH) (nH) (nH) Q min
4
(MHz) (mOhm) (A)
144-01J12SL Brown 50 52 53 54 97 2200 7.4 11.0
144-02J12SL Red 67 70 74 78 98 1200 8.6 10.0
144-03J12SL Orange 88 92 99 106 98 920 9.7 9.6
144-04J12SL Yellow 106 111 122 133 100 790 10.9 9.0
144-05J12SL Green 126 132 149 165 101 685 12.1 8.6
144-06J12SL Blue 147 154 175 196 106 625 13.6 8.1
144-07J12SL Violet 168 176 200 223 104 530 14.7 7.8
144-08J12SL Gray 190 202 226 250 108 480 15.9 7.5
144-09J12SL White 210 239 256 274 108 435 17.1 7.2
144-10J12SL Black 10½ 232 270 282 295 106 420 18.5 7.0
142-01J08SL Brown 58 58 59.5 61 82 1230 7.4 13.4
142-02J08SL Red 81 84 86 89 83 650 8.4 12.5
142-03J08SL Orange 110 115 120 121 85 550 9.6 11.8
142-04J08SL Yellow 140 147 156 160 88 460 10.8 11.1
142-05J08SL Green 174 182 197 205 94 410 11.9 10.5
142-06J08SL Blue 210 220 240 248 94 370 13.2 10.0
142-07J08SL Violet 247 259 280 290 90 330 14.5 9.6
142-08J08SL Gray 284 299 322 337 86 320 15.7 9.2
142-09J08SL White 319 338 363 377 88 310 16.9 8.9
142-10J08SL Black 10½ 357 382 410 422 82 290 18.0 8.6
143-09J12SL White 300 315 369 423 80 303 16.7 7.3
143-10J12SL Black 10½ 338 355 416 477 82 290 17.9 7.1
143-11J12SL Brown 11½ 377 396 468 540 78 270 19.2 6.8
143-12J12SL Red 12½ 412 433 509 585 80 265 20.5 6.6
143-13J12SL Orange 13½ 452 475 556 637 80 265 21.7 6.4
143-14J12SL Yellow 14½ 490 515 604 693 78 260 22.8 6.3
143-15J12SL Green 15½ 522 583 660 738 80 250 23.9 6.1
143-16J12SL Blue 16½ 575 638 720 801 76 245 25.2 6.0
143-17J12SL Violet 17½ 612 693 770 846 76 240 26.4 5.8
143-18J12SL Gray 18½ 650 754 814 874 82 215 27.6 5.7
143-19J12SL White 19½ 675 792 846 900 80 210 28.9 5.6
143-20J12SL Black 20½ 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 µH read at recommended
Q meter frequency; those below
0.1 µH 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 40°C rise
above 25°C 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
40°C to +85°C.
9. Electrical specifications at 25°C.
Unshielded
Shielded

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