OverviewAll product unitsProduct unitPassive ComponentsProduct groupSignal & CommunicationsProduct familyRF InductorsProduct seriesWE-TCI Thinfilm Chip Inductor

WE-TCI Thinfilm Chip Inductor

WE-TCI Thinfilm Chip Inductor
Size Dimen­sionsL
(mm)
W
(mm)
H
(mm)
Mount
0201 0.6 0.3 0.23 SMT
0402 1 0.5 0.32 SMT

Characteristics

  • High self resonant frequency
  • Tight tolerances of 2% (1% on request) or ± 0.1 nH and small inductance values
  • Outstanding temperature stability
  • In high frequency circuit the inductance is very stable
  • Small inductance values
  • Recommended solder profile: Reflow
  • Operating temperature: –40 ºC to +125 ºC

Applications

  • Mobile phone
  • Pagers
  • GPS products
  • Wireless LAN
  • Communication appliances
  • RF Transceiver Module

Modelithics Simulation Models

Incorporate this part into your design with Modelithics’ highly accurate measurement-based simulation models. Modelithics libraries are available for Keysight Technologies’ Advanced Design System (ADS), NI/AWR Design Environment/Microwave Office™, Keysight Technologies’ Gensys, ASYSS® HFSS™, Sonnet® and Cadence.

Products

All
0201
0402
Order Code Data­sheet Simu­lation Downloads StatusL
(nH)
Tol. LTest Condition LQmin.
(%)
Test Condition QRDC max.
(Ω)
IR
(mA)
fres
(GHz)
Design Kit Samples
744900010SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1 ±0.2nH 500 MHz 8 500 MHz 0.3 300 9744900
744901010SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 1 ±0.1nH 500 MHz 13 500 MHz 0.1 700 12744900
744900012SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.2 ±0.2nH 500 MHz 8 500 MHz 0.35 300 9744900
744901012SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 1.2 ±0.1nH 500 MHz 13 500 MHz 0.1 700 12744900
744900013SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.3 ±0.2nH 500 MHz 8 500 MHz 0.45 250 9
744900014SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.4 ±0.2nH 500 MHz 8 500 MHz 0.45 250 9744900
744900015SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.5 ±0.2nH 500 MHz 8 500 MHz 0.45 250 9
744901015SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 1.5 ±0.1nH 500 MHz 13 500 MHz 0.2 700 10744900
744900018SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.8 ±0.2nH 500 MHz 8 500 MHz 0.55 200 9744900
744901018SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 1.8 ±0.1nH 500 MHz 13 500 MHz 0.2 560 10744900
744900019SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 1.9 ±0.2nH 500 MHz 8 500 MHz 0.55 200 9
744900020SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 2 ±0.2nH 500 MHz 8 500 MHz 0.7 200 8744900
744900022SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 2.2 ±0.2nH 500 MHz 8 500 MHz 0.7 200 8
744901022SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 2.2 ±0.1nH 500 MHz 13 500 MHz 0.3 440 8744900
744900027SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 2.7 ±0.2nH 500 MHz 8 500 MHz 0.8 150 8744900
744901027SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 2.7 ±0.1nH 500 MHz 13 500 MHz 0.3 440 8744900
744901030SPEC
13 files Active i| Production is active. Expected lifetime: >10 years. 3 ±0.1nH 500 MHz 13 500 MHz 0.45 380 6
744900033SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 3.3 ±0.2nH 500 MHz 8 500 MHz 1 150 6744900
744901033SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 3.3 ±0.1nH 500 MHz 13 500 MHz 0.4 380 6744900
744901036SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 3.6 ±0.1nH 500 MHz 13 500 MHz 0.55 380 6744900
744900039SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 3.9 ±0.2nH 500 MHz 8 500 MHz 1.2 150 6744900
744901039SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 3.9 ±0.1nH 500 MHz 13 500 MHz 0.5 340 6744900
744901043SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 4.3 ±0.1nH 500 MHz 13 500 MHz 0.65 320 6744900
744900047SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 4.7 ±0.2nH 500 MHz 8 500 MHz 1.4 130 6744900
744901047SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 4.7 ±0.1nH 500 MHz 13 500 MHz 0.6 320 6744900
744901051SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 5.1 ±0.1nH 500 MHz 13 500 MHz 0.75 300 6744900
744900056SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 5.6 ±2% 500 MHz 8 500 MHz 1.8 130 4744900
744901056SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 5.6 ±0.1nH 500 MHz 13 500 MHz 0.7 280 6744900
744901058SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 5.8 ±0.1nH 500 MHz 13 500 MHz 0.85 280 6744900
744901062SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 6.2 ±0.1nH 500 MHz 13 500 MHz 0.9 270 6744900
744900068SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 6.8 ±2% 500 MHz 8 500 MHz 2.3 110 4
744901068SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 6.8 ±0.1nH 500 MHz 13 500 MHz 0.9 260 6744900
744901072SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 7.2 ±0.1nH 500 MHz 13 500 MHz 1.05 260 6744900
744900082SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 8.2 ±2% 500 MHz 8 500 MHz 3 110 3744900
744901082SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 8.2 ±0.1nH 500 MHz 13 500 MHz 1.1 220 5744900
744901091SPEC
11 files Active i| Production is active. Expected lifetime: >10 years. 9.1 ±0.1nH 500 MHz 13 500 MHz 1.25 220 5.5
744900110SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 10 ±2% 500 MHz 8 500 MHz 3.5 80 2744900
744901110SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 10 ±2% 500 MHz 13 500 MHz 1.3 200 4.5744900
744901112SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 12 ±2% 500 MHz 13 500 MHz 1.6 180 3.7744900
744901115SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 15 ±2% 500 MHz 13 500 MHz 1.8 130 3.3744900
744901118SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 18 ±2% 500 MHz 13 500 MHz 2 100 3.1744900
744901122SPEC
12 files Active i| Production is active. Expected lifetime: >10 years. 22 ±2% 500 MHz 13 500 MHz 2.6 90 2.8744900
744901127SPEC
8 files Active i| Production is active. Expected lifetime: >10 years. 27 ±2% 500 MHz 13 500 MHz 3.25 75 2.5744900
Order Code Data­sheet Simu­lation
744900010SPEC
744901010SPEC
744900012SPEC
744901012SPEC
744900013SPEC
744900014SPEC
744900015SPEC
744901015SPEC
744900018SPEC
744901018SPEC
744900019SPEC
744900020SPEC
744900022SPEC
744901022SPEC
744900027SPEC
744901027SPEC
744901030SPEC
744900033SPEC
744901033SPEC
744901036SPEC
744900039SPEC
744901039SPEC
744901043SPEC
744900047SPEC
744901047SPEC
744901051SPEC
744900056SPEC
744901056SPEC
744901058SPEC
744901062SPEC
744900068SPEC
744901068SPEC
744901072SPEC
744900082SPEC
744901082SPEC
744901091SPEC
744900110SPEC
744901110SPEC
744901112SPEC
744901115SPEC
744901118SPEC
744901122SPEC
744901127SPEC
Samples
Order Code Data­sheet Simu­lation Downloads StatusL
(nH)
Tol. LTest Condition LQmin.
(%)
Test Condition QRDC max.
(Ω)
IR
(mA)
fres
(GHz)
Design Kit Samples

What is the Quality Factor Q?

The quality factor Q is an essential characteristic parameter and one of the first creterias that every RF engineer should take into account. The Q factor is given either as minimum or as typical value at a defined frequency point. In the case of Würth Elektronik, the Q factor is given as the minimum value in order to guarantee customers a reliable minimum level.

Basically, the Q factor is the ratio between the inductive reactance XL and the losses RS and is an indicator of how ideal an inductor is. For inductors with air or ceramic cores, the resistance RS is mainly due to the resistivity of the conductor in the inductor device. A higher Q factor means less losses in the component.

Self Resonant Frequency

Because the winding structure of any coil of wire will exhibit some capacitance, the inductor will serve as a parallel resonant tank circuit with an associated self-resonance frequency (SRF). As with conventional inductors, SRF indicates up to which frequency the inductor behaves as an inductor.

Exactly at the SRF the inductor with its parasitic capacitance behaves as a resonance circuit with an almost infinite high impedance, only circuit losses limit the high value of the impedance. Beyond the SRF the “inductor” behaves like a capacitor

Increasing the inductance and/or the parasitic capacitance lowers the SRF, and vice versa. This is the reason why the higher the inductance value, the lower the SRF.

In case of choke applications in which inductors are used, the best signal blocking occurs shortly below the SRF, where the impedance is very high and thus the attenuation reaches its maximum. For filter or impedance-matching applications, it is more important to have constant inductance in the relevant frequency range, which means the SRF of the inductor should be well above the operating frequency of the circuit.

Rated Current in high frequency application

The rated current is specified as the maximum DC current (A or mA) that causes a defined temperature rise (i.e. ΔT = 40 K). The temperature rise plus the ambient temperature must not exceed the maximum operating temperature. For high current applications, please select the specific air core inductors: WE-KI HC, WE-ACHC and WE-CAIR.

RF inductors and Antenna Matching

How Antenna Matching works

With the help of the Smith chart, the complex antenna feed point impedance, consisting of resistive and reactive values, can be represented graphically. In a matched antenna, the impedance at the operating frequency is close to the middle of the Smith chart and therefore close to the impedance of 50 Ω. This can be achieved by using RF inductors and RF capacitors. A pi matching network is particularly useful for this purpose, since it can be used flexibly for antenna matching from almost any other impedance. In practice, antenna matching works through iterative steps.

In addition to the WE-MCA Antennas, we offer our customers a development-accompanying antenna service. We support from the antenna selection over the antenna placement up to the antenna matching.

Website: www.we-online.com/antenna-matching

E-Mail: antenna.matching@we-online.com

We are also offering an Antenna Matching Design Kit that contains all the components needed for your antenna matching. This Design Kit with order code 748001, contains chip antennas WE-MCA, multilayer ceramic inductors WE-MK size 0402, high frequency chip capacitors WCAP-CSRF in size 0402 and RF coaxial cables WR-CXARY working up to 18 GHz

Assortments

Articles from this product series can be found in the following assortments: