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 size A, and
16 mm for size B parts.
Coilcraft
Designer’s Kit C102
contains samples of all
5% inductance tolerance parts. Kits with 2% tolerance
are also available. To order, contact Coilcraft or visit
http://order.coilcraft.com.
Part
number
1
A01T_
A02T_
A03T_
A04T_
A05T_
B06T_
B07T_
B08T_
B09T_
B10T_
Inductance
2
Turns
1
2
3
4
5
6
7
8
9
10
(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
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
5
min
(GHz)
12.5
6.5
5.0
3.3
2.5
2.2
2.1
1.8
1.5
1.2
DCR
6
max
(mOhm)
1.1
1.8
2.6
3.4
3.9
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
code:
A02TG
G
= 2%
J
= 5%
Tolerance:
K
= 10%
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 01/30/03
© Coilcraft, Inc. 2005
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/lead 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. 2005
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