148

Document 111
Tunable RF Inductors – 148 Series
With an overall height of only 0.300″, these tunable coils
are ideal for applications where low-profile circuit boards
are essential.
The windings are precision molded in plastic to guarantee
a constant winding pitch and a consistent relationship to
the printed circuit board. Tuning is done by means of a
threaded Carbonyl J core.
Coilcraft Designer’s Kit M304 contains three samples
each of the values shown plus all values of the 132 Series
of low-profile, high Q fixed inductors. To order, contact
Coilcraft or visit http://order.coilcraft.com.
Part
number1
Color
Turns
148-01J12LBrown 1½
148-02J12LRed 2½
148-03J12LOrange 3½
148-04J12LYellow 4½
148-05J12LGreen 5½
148-06J12LBlue 6½
148-07J12LViolet 7½
148-08J12LGray 8½
148-09J12LWhite 9½
148-10J12L Black10½
148-11J12L Brown11½
148-12J12L Red12½
148-13J12L Orange13½
Inductance (nH) no core min3 nom max3
2
Q min4
at L nom
35383940
44465258
56607386
74 77 101125
92 96 130164
114120170220
142154222290
168176262346
198208310410
237250375500
276290435580
315338500666
344362540710
1. To order fixed inductance parts without cores, eliminate the “J12”, e.g.
148-13L.
2. Inductance readings taken at test frequency on an Agilent/HP 4342A
Q meter with 1/2″ long, 16 AWG tinned copper wire soldered along the
leads and bent at 90°, 1/4″ from standoffs. Inductance values at 50 MHz
calculated from Cp readings. Inductance values at 25 MHz read at
standard Q meter frequency (blue line).
3. L min measured with core halfway out top of form. L max measured with
core centered in the windings.
4. Q readings taken on an Agilent/HP 4342A Q meter with 1/2″ long,
16 AWG tinned copper wire soldered along the leads and bent at 90°,
1/4″ from standoffs.
5. Core material: Carbonyl J. Core length: 3/8″.
6. Operating temperature range –40°C to +85°C.
7. Electrical specifications at 25°C.
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.
Test freq
(MHz)
88
96
106
112
112
112
110
106
104
90
84
66
64
0.275 max
6,99
50
50
50
50
50
50
50
25
25
25
25
25
25
3200
1560
1200
980
820
720
620
570
490
450
410
350
320
0.750 ±0.015
19,05 ±0,38
0.300 max
7,62
1
No core SRF
min (MHz)
0.190
4,83
0.310 typ
7,87
0.250 ±0.030
6,35 ±0,76
0.360 ±0.010
9,14 ±0,25
22 AWG
0.198 ±0.010
5,03 ±0,25
Weight:
0.7 – 1.2 g
Terminations: Tin-silver over copper
Packaging:
30 per tube
US +1-847-639-6400 [email protected]
UK +44-1236-730595 [email protected]
Taiwan +886-2-2264 3646 [email protected]
China +86-21-6218 8074 [email protected]
Singapore + 65-6484 8412 [email protected]
1
Document 111 Revised 03/04/16
© Coilcraft Inc. 2016
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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