Document 108-1
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
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
Weight:
142 series
143 series
144 series
Unshielded
1.39 – 1.82 g
1.75 – 2.40 g
1.22 – 1.74 g
With shield can
1.64 – 2.16 g
2.85 – 3.54 g
2.35 – 2.91 g
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
Terminations:
C
L
0.045 (2)
1,143
0.1875
4,76
C
L
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.
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
Specifications subject to change without notice.
Please check our website for latest information.
Document 108-1
Revised 09/18/08
© Coilcraft, Inc. 2008
COILCRAFT [ Coilcraft lnc. ]
