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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
LB3218T1R0M

LB3218T1R0M

TAIYO YUDEN

FIXED IND 1UH 1.075A 60 MOHM SMD

27303
NS12565T2R0NN

NS12565T2R0NN

TAIYO YUDEN

FIXED IND 2UH 7.6A 9.6 MOHM SMD

1969
LBC2518T101KV

LBC2518T101KV

TAIYO YUDEN

FIXED IND 100UH 125MA 4.81 OHM

0
LK1608R15M-T

LK1608R15M-T

TAIYO YUDEN

FIXED IND 150NH 150MA 450 MOHM

0
NRS2012T2R2MGJ

NRS2012T2R2MGJ

TAIYO YUDEN

FIXED IND 2.2UH 1.37A 107 MOHM

2876
NR4010T3R3M

NR4010T3R3M

TAIYO YUDEN

FIXED IND 3.3UH 820MA 216 MOHM

0
HK2125R47J-T

HK2125R47J-T

TAIYO YUDEN

FIXED IND 470NH 300MA 1.5 OHM

2635
NRS5024T6R8MMGJV

NRS5024T6R8MMGJV

TAIYO YUDEN

FIXED IND 6.8UH 1.6A 96 MOHM SMD

3812
LHL10NB221K

LHL10NB221K

TAIYO YUDEN

FIXED IND 220UH 750MA 440 MOHM

0
LB2518T102M

LB2518T102M

TAIYO YUDEN

FIXED IND 1MH 15MA 24 OHM SMD

0
EST1060T220MDGA

EST1060T220MDGA

TAIYO YUDEN

FIXED IND 22UH 2.8A 53MOHM SMD

0
LHL08TB470K

LHL08TB470K

TAIYO YUDEN

FIXED IND 47UH 1.2A 150 MOHM TH

0
NRH2412T2R2MNGH

NRH2412T2R2MNGH

TAIYO YUDEN

FIXED IND 2.2UH 1A 140 MOHM SMD

16211
LBC2518T2R2M

LBC2518T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 630MA 130 MOHM

60
LHL08TB153J

LHL08TB153J

TAIYO YUDEN

FIXED IND 15MH 51MA 62 OHM TH

0
LBM2016T560JV

LBM2016T560JV

TAIYO YUDEN

FIXED IND 56UH 95MA 7.67 OHM SMD

0
CB2016T4R7MV

CB2016T4R7MV

TAIYO YUDEN

FIXED IND 4.7UH 410MA 325 MOHM

674
LHL10NB5R6M

LHL10NB5R6M

TAIYO YUDEN

FIXED IND 5.6UH 3.8A 25 MOHM TH

0
MDMK4040T100MMV

MDMK4040T100MMV

TAIYO YUDEN

FIXED IND 10UH 1.4A 330MOHM SMD

0
NRS6012T1R0NMGJ

NRS6012T1R0NMGJ

TAIYO YUDEN

FIXED IND 1UH 2.4A 60 MOHM SMD

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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