SPICE

Document 158
SPICE Model – 0603HP
This lumped-element (SPICE) model data simulates the
frequency-dependent behavior of Coilcraft RF surface
mount inductors from 1 MHz to the upper frequency limit
shown in the accompanying table.
The equivalent lumped element model schematic is
shown below. The element values R1, R2, C, and L are
listed for each component value. The value of the frequency-dependent variable resistor RVAR relates to the
skin effect and is calculated from:
RVAR = k *
•
•
k is shown for each value in the accompanying table.
f is the frequency in Hz
The data represents de-embedded measurements, as
described below. Effects due to different customer circuit
board traces, board materials, ground planes or interactions with other components are not included and can
have a significant effect when comparing the simulation
to measurements of the inductors using typical production verification instruments and fixtures.
Each model should only be analyzed at the input and
output ports. Individual elements of the model are not
determined by parameter measurement. The elements
are determined by the overall performance of the lumped
element model compared to the measurements taken of
the component.
Typically, the Self-Resonant Frequency (SRF) of the
component model will be higher than the measurement of
the component mounted on a circuit board. The parasitic
reactive elements of a circuit board or fixture will effectively
lower the circuit resonant frequency, especially for very
small inductance values. Since data sheet specifications
are based on typical production measurements, and the
SPICE models are based on de-embedded measurements as described below, the model results may be
different from the data sheet specifications.
Lumped Element Modeling Method
The measurements were made over a brass ground
plane with each component centered over an air gap, as
illustrated in Figure 1. The gap width for each size
component is given in Table 1. The test pads were 30 mil
Table 1. Test Gap
Size
0302
0402,0403
0603
0805
1008
1206
1812
Gap Width (inch / mm)
0.017 / 0.432
0.017 / 0.432
0.026 / 0.660
0.040 / 1.016
0.060 / 1.524
0.080 / 2.032
0.120 / 3.048
(50 Ohm) wide traces of tinned gold over 25 mil thick
alumina, and were not included in the gap. The TRL*
calibration plane is also illustrated in Figure 1.
Pad
Pad
Brass
ground
plane
Calibration
plane
Figure 1. Test Setup
The lumped element values were determined by matching
the simulation model to an average of the measurements. This method results in a model that represents as
closely as possible the typical frequency-dependent behavior of the component up to a frequency just above the
self-resonant frequency of the model.
The lumped element models were used to generate our
2-port S-parameters and therefore give identical results. The S-parameters are available on our web site
at http://www.coilcraft.com/models.cfm.
Disclaimer
Coilcraft makes every attempt to provide accurate measurement data and software, representative of our components, in a usable format. Coilcraft, however, disclaims
all warrants relating to the use of its data and software,
whether expressed or implied, including without limitation
any implied warranties of merchantability or fitness for a
particular purpose. Coilcraft cannot and will not be liable
for any special, incidental, consequential, indirect or
similar damages occurring with the use of the data and/
or software.
Specifications subject to change without notice.
© Coilcraft, Inc. 2009
Air gap
Document 158-1 Revised 03/16/09
Document 158
SPICE Model for Coilcraft 0603HP Chip Inductors
Part number
R1
⏲)
(⏲
0603HP-1N8
0603HP-2N2
0603HP-3N3
0603HP-3N6
0603HP-3N9
0603HP-4N3
0603HP-4N7
0603HP-5N1
0603HP-5N6
0603HP-6N0
0603HP-6N8
0603HP-7N2
0603HP-7N5
0603HP-8N2
0603HP-8N7
0603HP-9N1
0603HP-9N5
0603HP-10N
0603HP-11N
0603HP-12N
0603HP-15N
0603HP-16N
0603HP-18N
0603HP-22N
0603HP-23N
0603HP-24N
0603HP-27N
25
25
5
2
10
18
13
8
11
12
10
11
14
22
15
9
17
12
10
9
13
3
10
2
16
21
11
R2
⏲)
(⏲
0.033
0.180
0.024
0.031
0.039
0.080
0.100
0.036
0.036
0.036
0.042
0.052
0.080
0.054
0.054
0.037
0.053
0.048
0.042
0.088
0.078
0.085
0.066
0.140
0.150
0.074
0.150
C (pF) L (nH)
0.014
0.014
0.047
0.041
0.060
0.054
0.051
0.041
0.038
0.061
0.061
0.067
0.074
0.034
0.037
0.053
0.048
0.074
0.061
0.064
0.066
0.068
0.064
0.058
0.068
0.061
0.063
1.80
2.20
3.30
3.60
3.90
4.30
4.70
5.10
5.60
6.00
6.80
7.20
7.50
8.20
8.70
9.10
9.50
10.0
11.0
12.0
15.0
16.0
18.0
22.0
23.0
24.0
27.0
k
6.50E-06
1.14E-05
7.62E-06
7.60E-06
8.40E-06
1.02E-05
1.39E-05
8.70E-06
9.30E-06
9.10E-06
1.13E-05
1.12E-05
1.40E-05
1.30E-05
1.35E-05
1.70E-05
1.44E-05
1.56E-05
2.24E-05
2.83E-05
2.50E-05
3.10E-05
3.66E-05
4.90E-05
4.90E-05
4.60E-05
5.63E-05
Upper
limit
(MHz)
25000
25000
20000
20000
14000
14000
14000
14000
14000
10000
10000
10000
10000
10000
10000
10000
10000
10000
10000
9000
9000
9000
8000
8000
8000
8000
8000
Part number
R1
⏲)
(⏲
R2
⏲)
(⏲
0603HP-30N
0603HP-33N
0603HP-36N
0603HP-39N
0603HP-43N
0603HP-47N
0603HP-51N
0603HP-56N
0603HP-68N
0603HP-72N
0603HP-75N
0603HP-82N
0603HP-91N
0603HP-R10
0603HP-R11
0603HP-R12
0603HP-R15
0603HP-R18
0603HP-R20
0603HP-R21
0603HP-R22
0603HP-R25
0603HP-R27
0603HP-R30
0603HP-R33
0603HP-R36
0603HP-R39
14
14
18
22
21
20
35
47
44
25
40
40
42
60
55
40
50
120
160
190
160
120
120
120
200
160
140
0.130
0.170
0.200
0.190
0.170
0.240
0.280
0.300
0.330
0.420
0.520
0.460
0.580
0.540
0.580
0.720
0.820
1.50
2.00
2.00
2.00
3.00
2.25
2.80
3.60
4.00
4.00
Specifications subject to change without notice.
© Coilcraft, Inc. 2009
C (pF) L (nH)
0.052
0.053
0.063
0.049
0.047
0.047
0.040
0.038
0.043
0.045
0.047
0.056
0.058
0.034
0.041
0.038
0.046
0.031
0.029
0.034
0.037
0.044
0.041
0.040
0.036
0.032
0.037
30.0
33.0
36.0
39.0
43.0
47.0
51.0
56.0
68.0
72.0
75.0
82.0
91.0
100
110
120
150
180
200
210
220
250
270
300
330
360
390
k
6.10E-05
6.97E-05
7.90E-05
7.88E-05
8.32E-05
9.40E-05
1.10E-04
1.20E-04
1.32E-04
1.45E-04
1.40E-04
1.50E-04
1.60E-04
1.80E-04
2.00E-04
2.40E-04
2.20E-04
2.80E-04
3.00E-04
3.00E-04
3.30E-04
3.50E-04
3.90E-04
4.20E-04
4.70E-04
4.90E-04
5.30E-04
Upper
limit
(MHz)
6000
6000
6000
6000
6000
6000
6000
6000
4000
4000
4000
4000
4000
4000
3000
3000
3000
3000
2500
2500
2000
2000
2000
2000
2000
2000
2000
Document 158-24 Revised 01/30/08