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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
NRS5040T470MMGJV

NRS5040T470MMGJV

TAIYO YUDEN

FIXED IND 47UH 900MA 403 MOHM

280
MDWK4040T1R0MM

MDWK4040T1R0MM

TAIYO YUDEN

FIXED IND 1UH 5.1A 27 MOHM SMD

1383
NRS5020TR47NMGJ

NRS5020TR47NMGJ

TAIYO YUDEN

FIXED IND 470NH 5A 14.4 MOHM SMD

0
LBM2016T101JV

LBM2016T101JV

TAIYO YUDEN

FIXED IND 100UH 80MA 10.4 OHM

0
LK1608R33M-T

LK1608R33M-T

TAIYO YUDEN

FIXED IND 330NH 80MA 750 MOHM

0
HK2125R33J-T

HK2125R33J-T

TAIYO YUDEN

FIXED IND 330NH 300MA 1.4 OHM

3339
NRH2412T100MNGHV

NRH2412T100MNGHV

TAIYO YUDEN

FIXED IND 10UH 450MA 720 MOHM

2737
NS12565T100MNV

NS12565T100MNV

TAIYO YUDEN

FIXED IND 10UH 4.75A 23.88 MOHM

0
LK1608120K-T

LK1608120K-T

TAIYO YUDEN

FIXED IND 12UH 10MA 1.8 OHM SMD

10470
MAMK2520HR47M

MAMK2520HR47M

TAIYO YUDEN

FIXED IND 470NH 4.1A 26 MOHM SMD

3324
NRS3015T330MNGH

NRS3015T330MNGH

TAIYO YUDEN

FIXED IND 33UH 400MA 936 MOHM

0
MDMK2020T3R3MM

MDMK2020T3R3MM

TAIYO YUDEN

FIXED IND 3.3UH 1.15A 178 MOHM

4146
HKQ04022N3C-T

HKQ04022N3C-T

TAIYO YUDEN

FIXED IND 2.3NH 270MA 270 MOHM

0
MDKK2020TR68MMV

MDKK2020TR68MMV

TAIYO YUDEN

FIXED IND 680NH 2A 60 MOHM SMD

0
MDKK2020TR47MMV

MDKK2020TR47MMV

TAIYO YUDEN

FIXED IND 470NH 2.2A 46 MOHM SMD

0
HK10054N3S-T

HK10054N3S-T

TAIYO YUDEN

FIXED IND 4.3NH 500MA 200 MOHM

1706
LHL10NB101K

LHL10NB101K

TAIYO YUDEN

FIXED IND 100UH 1.2A 180 MOHM TH

0
NRV3012T1R5N

NRV3012T1R5N

TAIYO YUDEN

FIXED IND 1.5UH 1.61A 90 MOHM

0
HKQ04020N8C-T

HKQ04020N8C-T

TAIYO YUDEN

FIXED IND 0.8NH 470MA 90 MOHM

0
NR6028T1R5N

NR6028T1R5N

TAIYO YUDEN

FIXED IND 1.5UH 4.2A 20.8 MOHM

0

Fixed Inductors

1. Overview

Fixed inductors are passive electronic components designed to store energy in magnetic fields when electrical current flows through them. Unlike variable inductors, their inductance values remain constant during operation. These components play critical roles in filtering, signal processing, energy storage, and electromagnetic interference (EMI) suppression across modern electronics, including power supplies, communication systems, and automotive electronics.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Wirewound InductorsHigh precision, high current handling, low resistancePower supplies, DC-DC converters
Chip InductorsCompact SMD package, stable performance at high frequenciesMobile devices, RF circuits
Ferrite Bead InductorsEffective high-frequency noise suppressionEMI filtering in digital circuits
Thin-Film InductorsUltra-compact, high Q-factor, tight tolerance5G communication modules, IoT devices

3. Structure and Composition

Typical fixed inductors consist of:

  • Magnetic Core: Made from ferrite, powdered iron, or composite materials to concentrate magnetic flux
  • Coil Structure: Copper wire wound around the core (enamelled or silver-plated)
  • Encapsulation: Molded resin or ceramic coating for mechanical protection and insulation
  • Terminations: Solder-coated ends for PCB mounting (for SMD types) or leaded connections

4. Key Technical Specifications

ParameterDescriptionImportance
Inductance (L)Measured in henrys (H), determines energy storage capacityDefines filtering/energy storage performance
Rated Current (Irated)Maximum DC current before saturationPrevents core saturation and failure
DC Resistance (DCR)Resistance of coil windingsAffects efficiency and thermal performance
Self-Resonant Frequency (SRF)Frequency where inductor behaves as capacitorLimits effective operating frequency range
Q FactorQuality factor indicating efficiencyHigher Q = lower energy losses

5. Application Fields

  • Consumer Electronics: Smartphones, laptops, LED drivers
  • Industrial Equipment: Motor drives, power inverters
  • Automotive Systems: ECU modules, EV battery management
  • Telecom Infrastructure: Base station filters, optical transceivers

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
MurataLQH3NPN100M10 H, 1.2A, 1.8 1.4mm chip inductor
TDKMLZ2012A100T100MHz SRF, 1.0 1.25mm for RF circuits
VishayIHLP2525CZER1R0M1 H, 12A, composite construction
Coilcraft0402DC-103J10 H, 5% tolerance, ultra-low profile

7. Selection Guidelines

Key considerations during selection:

  • Calculate required inductance based on switching frequency and ripple current
  • Verify rated current exceeds maximum operating current by 20-30%
  • Select SRF higher than circuit operating frequency
  • Consider package size vs. thermal dissipation requirements
  • For EMI suppression: Choose ferrite beads with impedance curves matching target frequencies

8. Industry Trends

Current development trends include:

  • Miniaturization: Sub-0.5mm size inductors for wearable devices
  • High-Frequency Operation: Components supporting >10GHz 5G applications
  • Integrated Solutions: Combined inductor-filter modules
  • Material Innovation: Nanocrystalline cores for higher saturation flux
  • Automotive Focus: AEC-Q qualified parts for EV/HEV systems
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