1606-10 Coilcraft, Inc., 1606-10 Datasheet

1606-10

Manufacturer Part Number

1606-10

Description

Transmission Line Model

Manufacturer

Coilcraft, Inc.

Datasheet

1.1606-10.pdf (2 pages)

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These transmission line models accurately simulate the

frequency-dependent behavior of Coilcraft surface mount

“Spring” air core inductors within the frequency limits

shown in the accompanying table for each individual

inductor. They are based on de-embedded measure-

ments using a 2-port network analyzer.

The model schematic, shown below, combines an ideal

transmission line model with lumped elements. Each

model should be analyzed only as a whole at the input and

output ports. Conclusions based on individual lumped

element values may be erroneous. The individual element

values R1, R2, C, Z0, EL, and F0 are listed in the table for

each individual spring inductor.

Effects due to different circuit board traces, board

materials, ground planes or interactions with other com-

ponents are not included. They will have a significant

effect when comparing the simulation to measurements

of the individual inductors using other production verifi-

cation instruments and fixtures.

Typically, the Self-Resonant Frequency (SRF) of the

inductor model will be higher than a measurement of the

component mounted on a circuit board. The parasitic

reactive elements of a circuit board or fixture will effec-

tively lower the circuit resonant frequency, especially for

very small inductance values. Data sheet specifications

are based on typical production measurements. These

models are based on de-embedded 2-port measurements

as described below, so 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

50 Ohm

TL1

Transmission Line Model

Specifications subject to change without notice. Document 341-1 Revised 05/21/03

50 Ohm

(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.

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 specified frequency limits of

the model. The lumped element models were used to

generate our 2-port S-parameters and therefore give

identical results with the same number of simulation

frequency points. The S-parameters are available on

our web site at http://www.coilcraft.com/models.cfm.

Disclaimer

Coilcraft makes every attempt to provide accurate mea-

surement data and software, representative of our com-

ponents, 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.

Calibration

z i

plane

Figure 1. Test Setup

Pad

Table 1. Test Gap

Air gap

0 .

1 .

d i

h t

Pad

(

Document 341 -1

n i

0 ,

Micro

Springs™

)

Brass

ground

plane

Related parts for 1606-10

1606-10 Summary of contents

Page 1

Transmission Line Model These transmission line models accurately simulate the frequency-dependent behavior of Coilcraft surface mount “Spring” air core inductors within the frequency limits shown in the accompanying table for each individual inductor. They are based on de-embedded measure- ments ...

Page 2

... (pF) 0.079 0.0698 0.0660 0.000 0.0968 0.0720 0.650 0.1524 0.0899 4.606 0.2201 0.1276 10.71 0.2170 0.0589 1.026 ...

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