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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
HKQ0603W24NH-T

HKQ0603W24NH-T

TAIYO YUDEN

FIXED IND 24NH 160MA 1.6 OHM SMD

0
LB3218T6R8MV

LB3218T6R8MV

TAIYO YUDEN

FIXED IND 6.8UH 380MA 221MOHM SM

3970
MDJE4040T2R2MM

MDJE4040T2R2MM

TAIYO YUDEN

FIXED IND 2.2UH 2.7A 115 MOHM

1916
HK10052N4S-T

HK10052N4S-T

TAIYO YUDEN

FIXED IND 2.4NH 650MA 130 MOHM

32731
LB2016T330M

LB2016T330M

TAIYO YUDEN

FIXED IND 33UH 85MA 1.7 OHM SMD

0
CB2518T220KV

CB2518T220KV

TAIYO YUDEN

FIXED IND 22UH 390MA 650 MOHM

1380
CB2518T101M

CB2518T101M

TAIYO YUDEN

FIXED IND 100UH 260MA 2.1 OHM

0
CBMF1608T4R7M

CBMF1608T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 470MA 312 MOHM

24668
LBM2016T6R8JV

LBM2016T6R8JV

TAIYO YUDEN

FIXED IND 6.8UH 240MA 200 MOHM

0
LHL10TB4R7M

LHL10TB4R7M

TAIYO YUDEN

FIXED IND 4.7UH 4A 24 MOHM TH

0
CBC2518T2R2MV

CBC2518T2R2MV

TAIYO YUDEN

FIXED IND 2.2UH 630MA 169 MOHM

158
LBM2016T5R6JV

LBM2016T5R6JV

TAIYO YUDEN

FIXED IND 5.6UH 255MA 200 MOHM

0
HK1005R10J-TV

HK1005R10J-TV

TAIYO YUDEN

FIXED IND 100NH 150MA 1.5 OHM

0
LHL10NB180K

LHL10NB180K

TAIYO YUDEN

FIXED IND 18UH 2.4A 46 MOHM TH

0
NRS3015T100MNGH

NRS3015T100MNGH

TAIYO YUDEN

FIXED IND 10UH 700MA 264 MOHM

0
NRS5012T1R0NMGFV

NRS5012T1R0NMGFV

TAIYO YUDEN

FIXED IND 1UH 2.3A 63.6 MOHM SMD

0
LBC3225T680MR

LBC3225T680MR

TAIYO YUDEN

FIXED IND 68UH 190MA 1 OHM SMD

0
NRV2010T1R5MGFV

NRV2010T1R5MGFV

TAIYO YUDEN

FIXED IND 1.5UH 1.45A 100 MOHM

675
HK060347NJ-T

HK060347NJ-T

TAIYO YUDEN

FIXED IND 47NH 100MA 1.9 OHM SMD

10502
NR3010T150M

NR3010T150M

TAIYO YUDEN

FIXED IND 15UH 400MA 888 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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