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© Coilcraft, Inc. 2007
“Slot Seven” 7 mm Tunable Inductors
Specifications subject to change without notice.
Please check our website for latest information.
Document 112-3
Document 112-3
Revised 11/21/02
Frequency (MHz)
1
10
100
75
50
25
0
-562
-683
-393
-182
-102
-331
-151
-332
Typical Q at L nom — Series 7M3
Series 7M3 — Shielded with Ferrite Sleeve
Test
Q min
DCR max
Part number
L min (µH)
L nom (µH)
L max (µH)
frequency
@ L nom
(Ohms)
7M3-151
0.128
0.150
0.173
25 MHz
40
0.124
7M3-181
0.153
0.180
0.207
25 MHz
45
0.124
7M3-221
0.187
0.220
0.253
25 MHz
45
0.151
7M3-271
0.230
0.270
0.311
25 MHz
50
0.151
7M3-331
0.281
0.330
0.380
25 MHz
50
0.151
7M3-391
0.332
0.390
0.449
25 MHz
55
0.176
7M3-471
0.400
0.470
0.541
25 MHz
55
0.198
7M3-561
0.476
0.560
0.644
25 MHz
60
0.198
7M3-681
0.544
0.680
0.816
25 MHz
60
0.248
7M3-821
0.656
0.820
0.984
25 MHz
60
0.271
7M3-102
0.8
1.0
1.2
25 MHz
60
0.317
7M3-122
1.0
1.2
1.4
7.9 MHz
45
0.333
7M3-152
1.2
1.5
1.8
7.9 MHz
45
0.368
7M3-182
1.4
1.8
2.2
7.9 MHz
45
0.396
7M3-222
1.8
2.2
2.6
7.9 MHz
45
0.412
7M3-272
2.2
2.7
3.2
7.9 MHz
45
0.466
7M3-332
2.6
3.3
4.0
7.9 MHz
40
0.544
7M3-392
3.1
3.9
4.7
7.9 MHz
40
0.595
7M3-472
3.8
4.7
5.6
7.9 MHz
40
0.898
7M3-562
4.5
5.6
6.7
7.9 MHz
40
1.04
7M3-682
5.4
6.8
8.2
7.9 MHz
35
1.04
7M3-822
6.6
8.2
9.8
7.9 MHz
35
1.12
7M3-103
8
10
12
7.9 MHz
35
1.38
7M3-123
9
12
15
2.5 MHz
35
1.49
7M3-153
11
15
19
2.5 MHz
35
1.65
7M3-183
14
18
23
2.5 MHz
35
2.42
7M3-223
17
22
28
2.5 MHz
35
2.75
7M3-273
20
27
34
2.5 MHz
40
3.71
7M3-333
25
33
41
2.5 MHz
40
3.71
7M3-393
29
39
49
2.5 MHz
40
4.01
7M3-473
35
47
59
2.5 MHz
40
7.37
7M3-563
42
56
70
2.5 MHz
40
8.48
7M3-683
51
68
85
2.5 MHz
40
13.34
7M3-823
62
82
103
2.5 MHz
40
14.72
7M3-104
75
100
125
2.5 MHz
40
16.42
7M3-124
90
120
150
2.5 MHz
40
17.76
7M3-154
113
150
188
2.5 MHz
40
19.76
7M3-184
135
180
225
2.5 MHz
40
22.01
7M3-224
165
220
275
2.5 MHz
40
24.25
Parts in bold are included in Coilcraft Designer’s Kit M106.
Notes:
1. All readings taken on Agilent/HP
4342-A Q Meter.
2. L min is achieved at maximum
extension of the core toward PC
board. Complete tuning range is
reached within the boundaries of the
coil form.
3. All specifications are at standard “Q”
meter frequencies. L and Q readings
change with frequency.
4. Shielded parts have a sleeve insert
to protect the winding.
5. Operating temperature range -40°C
to +85°C.
6. Electrical specifications at 25°C.
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