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参数资料
| 型号： | 0403HQ-18N |
| 厂商： | COILCRAFT INC |
| 元件分类： | 通用定值电感 |
| 英文描述： | 1 ELEMENT, 0.018 uH, GENERAL PURPOSE INDUCTOR, SMD |
| 封装： | CHIP, 0403 |
| 文件页数： | 1/2页 |
| 文件大小： | 71K |
| 代理商： | 0403HQ-18N |
Coilcraft, Inc. 2005
Document 158
Specifications subject to change without notice.
Document 158-1 Revised 03/10/04
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 fre-
quency-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 interac-
tions with other components are not included and can
have a significant effect when comparing the simulation
to measurements of the inductors using typical produc-
tion verification instruments and fixtures.
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, espe-
cially 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
(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 measure-
ments. This method results in a model that represents as
closely as possible the typical frequency-dependent be-
havior 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 re-
sults. 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.
Table 1. Test Gap
e
z
i
Sh
c
n
i
(
h
t
d
i
W
p
a
G/
)
m
2
0
3
02
3
4
.
0
/
7
1
0
.
0
3
0
4
0
,
2
0
4
02
3
4
.
0
/
7
1
0
.
0
3
0
6
00
6
.
0
/
6
2
0
.
0
5
0
8
06
1
0
.
1
/
0
4
0
.
0
8
0
14
2
5
.
1
/
0
6
0
.
0
6
0
2
12
3
0
.
2
/
0
8
0
.
0
2
1
8
18
4
0
.
3
/
0
2
1
.
0
Pad
Air gap
Brass
ground
plane
Calibration
plane
Pad
Figure 1. Test Setup
SPICE Model – 0403HQ
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 0403HQ-18NX | 制造商:Coilcraft Inc 功能描述:RF inductor, ceramic core, 5% tol, SMT, RoHS |
| 0403HQ-18NXJL | 制造商:Coilcraft Inc 功能描述:RF inductor, ceramic core, 5% tol, SMT, RoHS |
| 0403HQ-18NXJLU | 功能描述:固定电感器 RF Chip Inductor 18 nH 5 % 0.5 A RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm |
| 0403HQ-18NXJLW | 功能描述:固定电感器 RF Chip Inductor 18 nH 5 % 0.5 A RoHS:否 制造商:AVX 电感:10 uH 容差:20 % 最大直流电流:1 A 最大直流电阻:0.075 Ohms 工作温度范围:- 40 C to + 85 C 自谐振频率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接类型:SMD/SMT 封装 / 箱体:6.6 mm x 4.45 mm |
| 0403HQ-1N9X | 制造商:Coilcraft Inc 功能描述:RF inductor, ceramic core, 5% tol, SMT, RoHS |
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