Document 107-1
Mini Spring
™
Air Core Inductors
These surface mount air core “spring” inductors provide
extremely high Q over a wide frequency range.
They’re jacketed with a high temperature material that
ensures mechanical stability and very tight tolerance. It
also forms a flat top, making them suitable for automatic
placement and reflow or vapor phase processing. Solder
coated leads ensure reliable soldering.
Coilcraft Mini Spring™ inductors are available in standard
EIA tape and reel packaging: 12 mm for AxxT, and 16 mm
for size BxxT parts.
Coilcraft
Designer’s Kit C302
contains samples of all 5% in-
ductance tolerance parts. Kits with 2% tolerance parts are
also available. To order, contact Coilcraft or purchase them at
http://order.coilcraft.com.
Part
number
1
A01T_L_
A02T_L_
A03T_L_
A04T_L_
A05T_L_
B06T_L_
B07T_L_
B08T_L_
B09T_L_
B10T_L_
Turns
1
2
3
4
5
6
7
8
9
10
Inductance
2
(nH)
2.5
5.0
8.0
12.5
18.5
17.5
22.0
28.0
35.5
43.0
Percent
tolerance
3
10
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
5,2
Q
4
min
145
140
140
137
132
100
102
105
112
106
Test freq.
(MHz)
150
150
150
150
150
150
150
150
150
150
SRF min
5
DCRmax
6
(GHz)
(mOhm)
12.5
1.1
6.5
1.8
5.0
2.6
3.3
3.4
2.5
3.9
2.2
2.1
1.8
1.5
1.2
4.5
5.2
6.0
6.8
7.9
Irms
7
(A)
4
4
4
4
4
4
4
4
4
4
Weight
(mg)
31
42
52
65
78
100
110
118
133
147
1. When ordering, please specify
tolerance
and
packaging
codes:
A02TGLC
Tolerance: G
= 2%
J
= 5%
K=
10% (Table shows stock tolerances in bold.)
Packaging: C
= 7″ machine-ready reel. EIA-481 embossed plastic tape, 700 (AxxT) or 500 (BxxT) parts per full reel.
B
= Less than full reel. In tape, but not machine-ready. To have a leader and trailer added ($25 charge), use code letter C instead.
D
= 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked, 2500 (AxxT) or 2200 (BxxT) parts per full reel.
2. Inductance measured using Agilent/HP 4286 with Coilcraft SMD-A fixture and correlation.
3. Tolerances in bold are stocked for immediate shipment.
4. Q measured using Agilent/HP 4291A with Agilent/HP 16193A test fixture.
5. SRF tested on the Agilent/HP 8720D and the SMD-D test fixture.
6. DCR tested on the Cambridge Technology Model 510 Micro-ohmmeter.
7. Average current for a 15°C rise above 25°C ambient.
8. Operating temperature range -40°C to +125°C.
9. Electrical specifications at 25°C.
See Qualification Standards section for environmental and test data.
Specifications subject to change without notice.
Please check our website for latest information. Document 107-1
Revised 01/19/05
© Coilcraft, Inc. 2006
Document 107-2
Mini Spring™ Air Core Inductors
Typical L vs Frequency
25
60
55
20
18.5 nH
43.0 nH
50
Inductance (nH)
Inductance (nH)
45
40
35
28.0 nH
35.5 nH
15
12.5 nH
10
8.0 nH
30
25
20
17.5 nH
22.0 nH
5
5.0 nH
2.5 nH
15
10
200
400
600
1000
100
200
400
600
1000
0
100
Frequency (MHz)
Frequency (MHz)
Typical Q vs Frequency
220
210
200
190
2.5 nH
135
130
125
17.5 nH
120
Q factor
180
170
8.0 nH
Q factor
5.0 nH
22.0 nH
115
110
105
43.0 nH
28.0 nH
35.5 nH
160
12.5 nH
150
140
130
100
200
400
600
1000
18.5 nH
100
95
90
100
200
400
600
1000
Frequency (MHz)
A
D
Encapsulant
Frequency (MHz)
E
Recommended Land Patterns
SIZE A
SIZE B
0.050
1,27
0.050
1,27
0.110
2,79
0.130
3,30
0.065
1,65
0.165
4,19
0.185
4,70
0.285
7,23
C
B
Size
A
B
A max
0.155
3,94
0.270
6,86
B max
0.175
4,45
0.175
4,45
C max
0.124
3,15
0.124
3,15
D
0.125 ±0.010
3,18 ±0,25
0.125 ±0.010
3,18 ±0,25
F
E
0.115 ±0.010
2,92 ±0,25
0.230 ±0.015
5,84 ±0,38
F max
0.029
0,74
0.029
0,74
0.110
2,79
0.130
3,30
Strip Length
135°
max
Tape and reel:
700/7″ reel; 2500/13″ reel
500/7″ reel; 2200/13″ reel
12 mm tape width
16 mm tape width
For packaging data see Tape and Reel Specifications section.
Terminations:
Tin-silver over copper
0° min
Specifications subject to change without notice.
Please check our website for latest information. Document 107-2
Revised 03/14/05
© Coilcraft, Inc. 2006
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