RF Inductors

Würth Elektronik 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 Würth Elektronik 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.

Würth Elektronik 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 Würth Elektronik:

  • 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
  • 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
Applications
  • High frequency applications
  • RF transceiver/communications
  • SAT receivers
  • Set-top boxes
  • Broadband signal transmissions
  • Bluetooth®
  • Wireless LAN
WE-RFI Wire Wound Inductors Characteristics
  • High thermal stability
  • Recommended soldering: reflow
  • Operating Temperature: -40°C to 85°C
  • Custom designs available upon request
Applications
  • Developed for RF applications
  • RFID
  • Low frequency radio applications (keyless)
WE-RFH Wire Wound Inductors Characteristics
  • High thermal stability
  • Recommended soldering: reflow
  • High inductances
  • High currents
  • Operating Temperature: -40°C to 85°C
Applications
  • Developed for RF applications
  • Perfect for telecommunication applications
WE-MK Multilayer Ceramic SMD Inductors Characteristics
  • 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
Applications
  • High frequency circuits
  • Bluetooth
  • Wireless LAN
  • Filter circuits
  • Oscillators
  • Pagers
  • Laptops
  • PCMCIA-cards
WE-TCI Thin Film Chip Inductors 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°C to 125°C
Applications
  • Mobile phones
  • Pagers
  • GPS products
  • Wireless LAN
  • Communication appliances
  • RF transceiver modules
WE-CAIR Air Coils Characteristics
  • 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
Applications
  • Especially for RF applications
  • Ideal for high current applications
  • Broad band filters
  • RF decoupling

WE-CAIR Air Coil Inductors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 22NH 3A 4.2 MOHM SMD744912122FIXED IND 22NH 3A 4.2 MOHM SMD290 - ImmediateView Details
FIXED IND 27NH 3.5A 4 MOHM SMD744912127FIXED IND 27NH 3.5A 4 MOHM SMD0View Details
FIXED IND 33NH 3A 4.8 MOHM SMD744912133FIXED IND 33NH 3A 4.8 MOHM SMD1145 - ImmediateView Details
FIXED IND 39NH 3A 4.4 MOHM SMD744912139FIXED IND 39NH 3A 4.4 MOHM SMD928 - ImmediateView Details
FIXED IND 47NH 3A 5.6 MOHM SMD744912147FIXED IND 47NH 3A 5.6 MOHM SMD309 - ImmediateView Details

WE-KI SMD Wire Wound Ceramic Inductors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 1.8NH 700MA 50MOHM SMD744761018AFIXED IND 1.8NH 700MA 50MOHM SMD2030 - ImmediateView Details
FIXED IND 10NH 700MA 130MOHM SMD744761110AFIXED IND 10NH 700MA 130MOHM SMD22426 - ImmediateView Details
FIXED IND 100NH 400MA 630MOHM SM744761210AFIXED IND 100NH 400MA 630MOHM SM2469 - ImmediateView Details
FIXED IND 22NH 700MA 220MOHM SMD744761122AFIXED IND 22NH 700MA 220MOHM SMD886 - ImmediateView Details
FIXED IND 3.3NH 700MA 60MOHM SMD744761033AFIXED IND 3.3NH 700MA 60MOHM SMD3273 - ImmediateView Details

WE-MK Multilayer Ceramic SMD Inductors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 27NH 600MA 700MOHM SMD744786121FIXED IND 27NH 600MA 700MOHM SMD8127 - ImmediateView Details
FIXED IND 1NH 400MA 100 MOHM SMD744784010AFIXED IND 1NH 400MA 100 MOHM SMD13381 - ImmediateView Details
FIXED IND 1.2NH 400MA 100MOHM SM744784012AFIXED IND 1.2NH 400MA 100MOHM SM10220 - ImmediateView Details
FIXED IND 1.5NH 300MA 100MOHM SM744784015AFIXED IND 1.5NH 300MA 100MOHM SM18958 - ImmediateView Details
FIXED IND 1.8NH 300MA 100MOHM SM744784018AFIXED IND 1.8NH 300MA 100MOHM SM2059 - ImmediateView Details

WE-RFH SMD Wire Wound Ferrite Inductor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 1UH 370MA 1.7 OHM SMD744758310AFIXED IND 1UH 370MA 1.7 OHM SMD824 - ImmediateView Details
FIXED IND 1.2UH 760MA 500MOHM SM744758312AFIXED IND 1.2UH 760MA 500MOHM SM77 - ImmediateView Details
FIXED IND 1.5UH 630MA 750MOHM SM744758315AFIXED IND 1.5UH 630MA 750MOHM SM1792 - ImmediateView Details
FIXED IND 1.8UH 630MA 750MOHM SM744758318AFIXED IND 1.8UH 630MA 750MOHM SM1858 - ImmediateView Details
FIXED IND 2.2UH 520MA 1.1OHM SMD744758322AFIXED IND 2.2UH 520MA 1.1OHM SMD1202 - ImmediateView Details
FIXED IND 2.7UH 520MA 1.1OHM SMD744758327AFIXED IND 2.7UH 520MA 1.1OHM SMD0View Details
FIXED IND 3.3UH 460MA 1.35OHM SM744758333AFIXED IND 3.3UH 460MA 1.35OHM SM2 - ImmediateView Details
FIXED IND 4.7UH 400MA 1.65OHM SM744758347AFIXED IND 4.7UH 400MA 1.65OHM SM1990 - ImmediateView Details
FIXED IND 5.6UH 370MA 1.8OHM SMD744758356AFIXED IND 5.6UH 370MA 1.8OHM SMD1768 - ImmediateView Details
FIXED IND 6.8UH 360MA 2 OHM SMD744758368AFIXED IND 6.8UH 360MA 2 OHM SMD691 - ImmediateView Details
FIXED IND 8.2UH 320MA 2.6OHM SMD744758382AFIXED IND 8.2UH 320MA 2.6OHM SMD1620 - ImmediateView Details
FIXED IND 10UH 300MA 2.8 OHM SMD744758410AFIXED IND 10UH 300MA 2.8 OHM SMD34 - ImmediateView Details

WE-RFI SMD Wire Wound Ferrite Inductor

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 470NH 500MA 950MOHM SM744760247AFIXED IND 470NH 500MA 950MOHM SM0View Details
FIXED IND 560NH 450MA 1.1OHM SMD744760256AFIXED IND 560NH 450MA 1.1OHM SMD435 - ImmediateView Details
FIXED IND 680NH 400MA 1.2OHM SMD744760268AFIXED IND 680NH 400MA 1.2OHM SMD78 - ImmediateView Details
FIXED IND 820NH 300MA 1.5OHM SMD744760282AFIXED IND 820NH 300MA 1.5OHM SMD2812 - ImmediateView Details
FIXED IND 1UH 180MA 2.13 OHM SMD744760310AFIXED IND 1UH 180MA 2.13 OHM SMD3652 - ImmediateView Details

WE-TCI Thin Film Chip Inductors

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
FIXED IND 1NH 700MA 100 MOHM SMD744901010FIXED IND 1NH 700MA 100 MOHM SMD9650 - ImmediateView Details
FIXED IND 1.2NH 700MA 100MOHM SM744901012FIXED IND 1.2NH 700MA 100MOHM SM9602 - ImmediateView Details
FIXED IND 1.5NH 700MA 200MOHM SM744901015FIXED IND 1.5NH 700MA 200MOHM SM4 - ImmediateView Details
FIXED IND 1.8NH 560MA 200MOHM SM744901018FIXED IND 1.8NH 560MA 200MOHM SM0View Details
FIXED IND 2.2NH 440MA 300MOHM SM744901022FIXED IND 2.2NH 440MA 300MOHM SM447 - ImmediateView Details
FIXED IND 2.7NH 440MA 300MOHM SM744901027FIXED IND 2.7NH 440MA 300MOHM SM8517 - ImmediateView Details
FIXED IND 3.3NH 380MA 400MOHM SM744901033FIXED IND 3.3NH 380MA 400MOHM SM245 - ImmediateView Details
FIXED IND 3.9NH 340MA 500MOHM SM744901039FIXED IND 3.9NH 340MA 500MOHM SM8 - ImmediateView Details
FIXED IND 4.7NH 320MA 600MOHM SM744901047FIXED IND 4.7NH 320MA 600MOHM SM7273 - ImmediateView Details
FIXED IND 5.6NH 280MA 700MOHM SM744901056FIXED IND 5.6NH 280MA 700MOHM SM690 - ImmediateView Details
FIXED IND 6.8NH 260MA 900MOHM SM744901068FIXED IND 6.8NH 260MA 900MOHM SM22298 - ImmediateView Details
FIXED IND 10NH 200MA 1.3 OHM SMD744901110FIXED IND 10NH 200MA 1.3 OHM SMD0View Details
Published: 2013-12-19