Document 108-1
10 mm Tunable Coils – 142, 143, 144
These Coilcraft variable inductors are precision molded in
plastic to ensure constant winding pitch and a consistent
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 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
0.380 ±0.005 square
9,65 ±0,13
0.470 ±0.020
11,94 ±0,51
0.704 ±0.020
17,88 ±0,51
(142 Series only)
0.138 ±0.040
3,5 ±1,02
0.276 ±0.007
7,01 ±0,18
TRITUNER
3 TOOLS IN 1
SEE INDEX
TUNING WRENCH
Start
0.276 ±0.007
7,01 ±0,18
Finish
0.025 ±0.002
dia
0,635 ±0,05
With Shield Can
0.411 sq max
10,44
0.531
max
13,49
0.750
max
19,05
(142 Series only)
0.060 ±0.010
1,52 ±0,25
Start
Recommended
Board Layout
0.375
Tab centers
9,53
0.197 (optional, for tuning
5,00 through the board)
0.080 (for shield
2,03 can tabs)
0.138
3,505
0.138
3,505
0.197
dia
5,00
Finish
0.157 ±0.010
3,99 ± 0,25
Tab length
0.045 (2)
1,143
0.1875
4,76
C
L
Dimensions are in
Weight:
Packaging:
142 series
143 series
144 series
inches
mm
C
L
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
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.
Unshielded
1.39 – 1.82 g
1.75 – 2.40 g
1.22 – 1.74 g
50 per tube
With shield can
1.64 – 2.16 g
2.85 – 3.54 g
2.35 – 2.91 g
50 per tube
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 108-1
Revised 09/18/08
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 108-2
Unshielded
Part
number
1
144-01J12L
144-02J12L
144-03J12L
144-04J12L
144-05J12L
144-06J12L
144-07J12L
144-08J12L
144-09J12L
144-10J12L
142-01J08L
142-02J08L
142-03J08L
142-04J08L
142-05J08L
142-06J08L
142-07J08L
142-08J08L
142-09J08L
142-10J08L
143-09J12L
143-10J12L
143-11J12L
143-12J12L
143-13J12L
143-14J12L
143-15J12L
143-16J12L
143-17J12L
143-18J12L
143-19J12L
143-20J12L
Color
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
White
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
Turns
1½
2½
3½
4½
5½
6½
7½
8½
9½
10½
1½
2½
3½
4½
5½
6½
7½
8½
9½
10½
9½
10½
11½
12½
13½
14½
15½
16½
17½
18½
19½
20½
No core L
2
nom (nH)
53
75
99
126
154
182
214
245
274
307
63
92
127
166
212
258
307
357
412
464
385
438
490
545
600
645
692
765
830
895
910
960
L min
3
(nH)
56
79
104
132
162
193
240
283
328
391
63
93
133
174
226
275
330
396
473
550
404
460
515
578
673
726
803
891
1010
1100
1200
1300
L nom
(nH)
59
88
123
164
207
250
298
344
387
442
65
100
145
196
256
315
378
450
520
592
550
624
708
764
845
908
978
1080
1180
1250
1320
1400
L max
(nH)
62
98
142
195
252
306
356
405
446
493
68
107
157
218
287
355
427
504
567
635
693
788
900
950
1020
1090
1150
1270
1340
1400
1440
1500
Q min
140
145
147
150
154
154
158
160
162
162
115
118
120
125
122
112
112
106
110
104
86
90
78
84
84
82
90
74
74
92
98
92
4
No core
DCR
SRF min
max
(MHz) (mOhm)
1800
7.4
1150
8.6
900
9.7
765
10.9
670
12.1
610
13.6
525
14.7
465
15.9
420
17.1
390
18.5
980
7.4
600
8.4
470
9.6
420
10.8
370
11.9
340
13.2
310
14.5
290
15.7
270
16.9
260
18.0
280
16.7
270
17.9
260
19.2
250
20.5
245
21.7
240
22.8
230
23.9
225
25.2
215
26.4
195
27.6
190
28.9
185
30.0
Irms
5
(A)
11.0
10.0
9.6
9.0
8.6
8.1
7.8
7.5
7.2
7.0
13.4
12.5
11.8
11.1
10.5
10.0
9.6
9.2
8.9
8.6
7.3
7.1
6.8
6.6
6.4
6.3
6.1
6.0
5.8
5.7
5.6
5.5
Shielded
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.
Part
number
1
144-01J12SL
144-02J12SL
144-03J12SL
144-04J12SL
144-05J12SL
144-06J12SL
144-07J12SL
144-08J12SL
144-09J12SL
144-10J12SL
142-01J08SL
142-02J08SL
142-03J08SL
142-04J08SL
142-05J08SL
142-06J08SL
142-07J08SL
142-08J08SL
142-09J08SL
142-10J08SL
143-09J12SL
143-10J12SL
143-11J12SL
143-12J12SL
143-13J12SL
143-14J12SL
143-15J12SL
143-16J12SL
143-17J12SL
143-18J12SL
143-19J12SL
143-20J12SL
Color
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
White
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White
Black
Turns
1½
2½
3½
4½
5½
6½
7½
8½
9½
10½
1½
2½
3½
4½
5½
6½
7½
8½
9½
10½
9½
10½
11½
12½
13½
14½
15½
16½
17½
18½
19½
20½
No core L
2
nom (nH)
50
67
88
106
126
147
168
190
210
232
58
81
110
140
174
210
247
284
319
357
300
338
377
412
452
490
522
575
612
650
675
715
L min
3
(nH)
52
70
92
111
132
154
176
202
239
270
58
84
115
147
182
220
259
299
338
382
315
355
396
433
475
515
583
638
693
754
792
847
L nom
(nH)
53
74
99
122
149
175
200
226
256
282
59.5
86
120
156
197
240
280
322
363
410
369
416
468
509
556
604
660
720
770
814
846
896
L max
(nH)
54
78
106
133
165
196
223
250
274
295
61
89
121
160
205
248
290
337
377
422
423
477
540
585
637
693
738
801
846
874
900
945
Q min
97
98
98
100
101
106
104
108
108
106
82
83
85
88
94
94
90
86
88
82
80
82
78
80
80
78
80
76
76
82
80
74
4
No core
DCR
SRF min
max
(MHz) (mOhm)
2200
7.4
1200
8.6
920
9.7
790
10.9
685
12.1
625
13.6
530
14.7
480
15.9
435
17.1
420
18.5
1230
7.4
650
8.4
550
9.6
460
10.8
410
11.9
370
13.2
330
14.5
320
15.7
310
16.9
290
18.0
303
16.7
290
17.9
270
19.2
265
20.5
265
21.7
260
22.8
250
23.9
245
25.2
240
26.4
215
27.6
210
28.9
200
30.0
Irms
5
(A)
11.0
10.0
9.6
9.0
8.6
8.1
7.8
7.5
7.2
7.0
13.4
12.5
11.8
11.1
10.5
10.0
9.6
9.2
8.9
8.6
7.3
7.1
6.8
6.6
6.4
6.3
6.1
6.0
5.8
5.7
5.6
5.5
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 108-2
Revised 09/18/08
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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