RF Inductors

Wurth Electronics offers its WE-KI, WE-RFI, WE-RFH, WE-MK, WE-TCI, and WE-CAIR series of ceramic and ferrite RF inductors

Image of Wurth Electronics' RF InductorsThe inductance of Wurth Electronics' RF inductors can be characterized over a wide frequency range. The characterization of performance is necessary for application like RF filters, VCO’s, phase shifters and delay networks. Furthermore, RF inductors can be implemented to reduce RF signals in certain circuit paths. There are many characteristics that you have to pay attention to when selecting components for RF applications because there are no ideal components and RF inductors are no exception. Because of these parasitic effects, the characteristics of the inductor are influenced by losses and frequency dependency. The self-resonance frequency (SRF) is one parameter which determines the bandwidth and therefore the frequency behavior. The SRF is defined by various construction technology and the frequency dependency of parasitic capacitance of the land pattern. Above the SRF the inductor cannot be implemented as an inductor because of the predominance of the parasitic capacitive characteristics.

Wurth Electronics offers RF products in two types: ceramic and ferrite. Their ceramic inductors include wire wound, thinfilm and multilayer. Their ferrite inductors have high current standards, which are for high frequency. The different characteristics and applications are based on the several various construction technology of the inductors. The following inductors below are available from Wurth Electronics:

  • Wire Wound: Based on the wire wound technology, the inductors distinguish a high quality factor and a high current carrying capacity. A benefit to these is low DC resistance.
    • WE-KI ceramic core inductors: Offer excellent Q factor and the highest possible self-resonant frequencies up to 12.5 GHz. They are available in sizes 0402A, 0603A, 0603C, 0805A, 0805C, and 1008A.
    • WE-RFI and WE-RFH ferrite core inductors: Similar products with the exception that the WE-RFH has a higher current handling capability and is available in only one size (1008), while the WE-RFI series are available in two sizes (0805A and 1008A).
  • Multilayer: The WE-MK series meet the demand for the proceeding miniaturization and, therefore, are available in small package sizes of 0201, 0402, 0402A, 0603, and 0603A. They are thermally stable and do not show any variation in inductance over a large temperature range.
  • Thin Film: The WE-TCI series can be characterized with extreme accuracy, which results in a very tight tolerance product. Tolerances of about 2% and 1% are available upon request so it is possible to recognized precise application behavior. They are available in 0201 and 0402 sizes.
  • Air Coil: The WE-CAIR series are characterized by very high quality factors, low frequency range (Q > 100), and high termperature stability with a very high resonance frequency and a guaranteed greater rated current compared to other RF inductors. They are available in sizes 1322, 3136, 1340, 4248, and 3168.
WE-KI Wire Wound Inductors Characteristics Applications
  • High quality
  • Inductance tolerances: 5% (2% on request)
  • High thermal stability
  • Recommended soldering: reflow
  • Operating temperature: -40°C to 125°C
  • Custom designs available upon request
  • High frequency applications
  • RF transceiver/communications
  • SAT receivers
  • Set-top boxes
  • Broadband signal transmissions
  • Bluetooth®
  • Wireless LAN
WE-RFI Wire Wound Inductors Characteristics Applications
  • High thermal stability
  • Recommended soldering: reflow
  • Operating Temperature: -40°C to 85°C
  • Custom designs available upon request
  • Developed for RF applications
  • RFID
  • Low frequency radio applications (keyless)
WE-RFH Wire Wound Inductors Characteristics Applications
  • High thermal stability
  • Recommended soldering: reflow
  • High inductances
  • High currents
  • Operating Temperature: -40°C to 85°C
  • Developed for RF applications
  • Perfect for telecommunication applications
WE-MK Multilayer Ceramic SMD Inductors Characteristics Applications
  • Windings printed on ceramic substrate
  • Extremely high self-resonant frequency > 17 GHz
  • Inductive tolerance of 5%; ± 0.3 nH
  • Operating temperature: -40°C to 120°C
  • Inductance is stable over temperature
  • Recommended soldering profile: reflow/wave
  • High frequency circuits
  • Bluetooth
  • Wireless LAN
  • Filter circuits
  • Oscillators
  • Pagers
  • Laptops
  • PCMCIA-cards
WE-TCI Thin Film Chip Inductors Characteristics Applications
  • 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°C to 125°C
  • Mobile phones
  • Pagers
  • GPS products
  • Wireless LAN
  • Communication appliances
  • RF transceiver modules
WE-CAIR Air Coils Characteristics Applications
  • Inductance values from 1.65 nH up to 120 nH
  • Very high quality factor >100
  • High self-resonant frequency
  • High currents up to 3.5 A
  • Inductance tolerances 5% and 10%
  • Pick-and-place process possible
  • Good solderability (tinned connector pins)
  • Operating temperature: -40°C to 125°C
  • Especially for RF applications
  • Ideal for high current applications
  • Broad band filters
  • RF decoupling

WE-KI SMD Wire Wound Ceramic Inductors

ImageManufacturer Part NumberDescriptionAvailable Quantity
744760256C datasheet linkFIXED IND 560NH 230MA 2.5 OHM744760256CFIXED IND 560NH 230MA 2.5 OHM7375 - Immediate
744760256C product page link
744765110A datasheet linkFIXED IND 10NH 480MA 195 MOHM744765110AFIXED IND 10NH 480MA 195 MOHM47518 - Immediate
744765110A product page link
744765116A datasheet linkFIXED IND 16NH 560MA 220 MOHM744765116AFIXED IND 16NH 560MA 220 MOHM35127 - Immediate
744765116A product page link
744765118A datasheet linkFIXED IND 18NH 420MA 230 MOHM744765118AFIXED IND 18NH 420MA 230 MOHM19742 - Immediate
744765118A product page link
744765133A datasheet linkFIXED IND 33NH 400MA 350 MOHM744765133AFIXED IND 33NH 400MA 350 MOHM11204 - Immediate
744765133A product page link
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WE-RFI SMD Wire Wound Ferrite Inductor

ImageManufacturer Part NumberDescriptionAvailable Quantity
FIXED IND 10UH 150MA 3.5 OHM SMD744762410AFIXED IND 10UH 150MA 3.5 OHM SMD23143 - Immediate
744762410A product page link
744760256A datasheet linkFIXED IND 560NH 450MA 1.1 OHM744760256AFIXED IND 560NH 450MA 1.1 OHM7198 - Immediate
744760256A product page link
744760312A datasheet linkFIXED IND 1.2UH 150MA 2.38 OHM744760312AFIXED IND 1.2UH 150MA 2.38 OHM2896 - Immediate
744760312A product page link
744760339A datasheet linkFIXED IND 3.9UH 200MA 2.5 OHM744760339AFIXED IND 3.9UH 200MA 2.5 OHM2726 - Immediate
744760339A product page link
744760410A datasheet linkFIXED IND 10UH 80MA 5 OHM SMD744760410AFIXED IND 10UH 80MA 5 OHM SMD2178 - Immediate
744760410A product page link
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WE-RFH SMD Wire Wound Ferrite Inductor

ImageManufacturer Part NumberDescriptionAvailable Quantity
744758327A datasheet linkFIXED IND 2.7UH 520MA 1.1 OHM744758327AFIXED IND 2.7UH 520MA 1.1 OHM17967 - Immediate
744758327A product page link
FIXED IND 1UH 370MA 1.7 OHM SMD744758310AFIXED IND 1UH 370MA 1.7 OHM SMD2314 - Immediate
744758310A product page link
744758347A datasheet linkFIXED IND 4.7UH 400MA 1.65 OHM744758347AFIXED IND 4.7UH 400MA 1.65 OHM3478 - Immediate
744758347A product page link
744758356A datasheet linkFIXED IND 5.6UH 370MA 1.8 OHM744758356AFIXED IND 5.6UH 370MA 1.8 OHM2476 - Immediate
744758356A product page link
744758312A datasheet linkFIXED IND 1.2UH 760MA 500 MOHM744758312AFIXED IND 1.2UH 760MA 500 MOHM3338 - Immediate
744758312A product page link
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WE-MK Multilayer Ceramic SMD Inductors

ImageManufacturer Part NumberDescriptionAvailable Quantity
744784082A datasheet linkFIXED IND 8.2NH 300MA 370 MOHM744784082AFIXED IND 8.2NH 300MA 370 MOHM19670 - Immediate
744784082A product page link
744784056A datasheet linkFIXED IND 5.6NH 300MA 300 MOHM744784056AFIXED IND 5.6NH 300MA 300 MOHM38295 - Immediate
744784056A product page link
744784122A datasheet linkFIXED IND 22NH 300MA 600 MOHM744784122AFIXED IND 22NH 300MA 600 MOHM28688 - Immediate
744784122A product page link
744784147A datasheet linkFIXED IND 47NH 200MA 1.1 OHM SMD744784147AFIXED IND 47NH 200MA 1.1 OHM SMD28050 - Immediate
744784147A product page link
744784215A datasheet linkFIXED IND 150NH 100MA 3.2 OHM744784215AFIXED IND 150NH 100MA 3.2 OHM28930 - Immediate
744784215A product page link
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WE-TCI Thin Film Chip Inductors

ImageManufacturer Part NumberDescriptionAvailable Quantity
744901018 datasheet linkFIXED IND 1.8NH 560MA 200 MOHM744901018FIXED IND 1.8NH 560MA 200 MOHM27426 - Immediate
744901018 product page link
744901012 datasheet linkFIXED IND 1.2NH 700MA 100 MOHM744901012FIXED IND 1.2NH 700MA 100 MOHM11941 - Immediate
744901012 product page link
744901010 datasheet linkFIXED IND 1NH 700MA 100 MOHM SMD744901010FIXED IND 1NH 700MA 100 MOHM SMD15528 - Immediate
744901010 product page link
744901022 datasheet linkFIXED IND 2.2NH 440MA 300 MOHM744901022FIXED IND 2.2NH 440MA 300 MOHM14714 - Immediate
744901022 product page link
744901027 datasheet linkFIXED IND 2.7NH 440MA 300 MOHM744901027FIXED IND 2.7NH 440MA 300 MOHM12428 - Immediate
744901027 product page link
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WE-CAIR Air Coil Inductors

ImageManufacturer Part NumberDescriptionAvailable Quantity
744910016 datasheet linkFIXED IND 1.65NH 1.6A 4 MOHM SMD744910016FIXED IND 1.65NH 1.6A 4 MOHM SMD3925 - Immediate
744910016 product page link
744910025 datasheet linkFIXED IND 2.55NH 1.6A 5 MOHM SMD744910025FIXED IND 2.55NH 1.6A 5 MOHM SMD3788 - Immediate
744910025 product page link
744911056 datasheet linkFIXED IND 5.6NH 1.6A 9 MOHM SMD744911056FIXED IND 5.6NH 1.6A 9 MOHM SMD3787 - Immediate
744911056 product page link
744911088 datasheet linkFIXED IND 8.8NH 1.6A 12 MOHM SMD744911088FIXED IND 8.8NH 1.6A 12 MOHM SMD3064 - Immediate
744911088 product page link
744911098 datasheet linkFIXED IND 9.85NH 1.6A 13 MOHM744911098FIXED IND 9.85NH 1.6A 13 MOHM3914 - Immediate
744911098 product page link
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Published: 2013-12-19