Document 298 SPICE Model – 0603LS This lumped-element (SPICE) model data simulates the frequency-dependent behavior of Coilcraft ferrite surface mount inductors within the frequency range shown in the accompanying table. The equivalent lumped element model schematic is shown below. The element values R1, R2, C, L, k1 and k2 are listed in the table for each component value. The value of the frequency-dependent variable resistor RVAR1 relates to the skin effect and is calculated from: RVAR1 = k1 * • k1 is shown for each value in the accompanying table. • f is the frequency in Hz The value of the frequency-dependent variable resistor RVAR2 relates to core losses and is calculated from: RVAR2 = k2 * • k2 is shown for each value in the accompanying table. • f is the frequency in Hz 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 Measurements were made using a 50 Ohm Agilent/ HP 4291A impedance analyzer with an Agilent/HP 16193 test fixture. Calibration was performed using open/short/ load/air capacitor (phase) standards. Fixture compensation was performed using open and short standards. 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 within the model frequency range. 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 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. 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. 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] Document 298-1 Revised 04/27/16 © 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. Document 298 SPICE Model for Coilcraft 0603LS RF Inductors Frequency limit of model (MHz) Part number Lower Upper R1 0603LS-47N 5 500490 0603LS-72N 5 500872 0603LS-101 5 500 1264 0603LS-121 5 500 1706 0603LS-151 5 500 2756 0603LS-181 5 500 3546 0603LS-241 5 350 4025 0603LS-271 5 300 3518 0603LS-331 5 300 3330 0603LS-391 5 300 2920 0603LS-471 5 300 1886 0603LS-561 5 300 1676 0603LS-681 5 200 893 0603LS-781 5 200 3800 0603LS-821 1 150 2740 0603LS-102 1 100 1180 0603LS-122 1 80 690 0603LS-152 1 80 242 0603LS-182 1 65 27.8 0603LS-222 1 60 33.5 0603LS-272 1 50 36.1 0603LS-332 1 37 80.4 0603LS-392 1 36 91.5 0603LS-472 1 30 76.1 0603LS-562 1 28 63.5 0603LS-782 1 25 90.4 0603LS-822 1 23 108 0603LS-223 1 30 72.6 R2 C (pF) L (nH) k1 k2 0.001 10.6 46.32.87E-05 5.77E-02 0.001 11.5 70.05.07E-05 1.65E-01 0.001 7.50 95.0 7.34E-051.50E-01 0.001 7.30 117 7.34E-051.52E-01 0.002 2.00 149 9.20E-051.45E-01 0.005 0.90 179 9.54E-051.60E-01 0.002 0.17 232 1.21E-042.14E-01 0.002 0.11 261 1.15E-042.17E-01 0.002 0.12 325 1.30E-042.42E-01 0.095 0.14 379 1.44E-043.72E-01 0.432 0.13 455 3.80E-053.47E-01 0.319 0.13 535 3.94E-053.94E-01 0.365 0.28 677 7.97E-055.11E-01 0.532 0.10 765 3.83E-055.35E-01 0.669 0.15 799 5.70E-056.33E-01 0.666 0.33 997 1.45E-047.88E-01 0.666 0.35 1180 8.08E-057.78E-01 0.956 1.26 1500 3.39E-059.40E-01 1.51 1.56 1760 8.42E-051.06E+00 1.10 1.73 2140 7.23E-051.31E+00 1.37 1.59 2620 5.76E-051.71E+00 1.49 2.68 3290 2.17E-051.98E+00 1.89 2.69 3810 2.33E-052.10E+00 3.14 3.49 4660 1.71E-052.59E+00 5.63 3.14 5390 1.31E-052.76E+00 3.58 3.05 7370 2.04E-054.46E+00 3.48 3.22 7801 2.04E-054.99E+00 8.81 2.4320900 3.30E-061.49E+01 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] Document 298-2 Revised 04/27/16 © 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.