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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
NRS5020T150MMGJV

NRS5020T150MMGJV

TAIYO YUDEN

FIXED IND 15UH 1.2A 198 MOHM SMD

0
CBMF1608T100M

CBMF1608T100M

TAIYO YUDEN

FIXED IND 10UH 380MA 468 MOHM

6385
HKQ0603S8N2H-T

HKQ0603S8N2H-T

TAIYO YUDEN

FIXED IND 8.2NH 190MA 570 MOHM

299
NRS4012T330MDGJ

NRS4012T330MDGJ

TAIYO YUDEN

FIXED IND 33UH 400MA 720 MOHM

0
NRS6012T470MMGJ

NRS6012T470MMGJ

TAIYO YUDEN

FIXED IND 47UH 460MA 1.158 OHM

0
HKQ0603S4N3C-T

HKQ0603S4N3C-T

TAIYO YUDEN

FIXED IND 4.3NH 230MA 390 MOHM

13642
NR5040T2R2N

NR5040T2R2N

TAIYO YUDEN

FIXED IND 2.2UH 3.5A 28.6 MOHM

21292
MDMK4040TR47MF

MDMK4040TR47MF

TAIYO YUDEN

FIXED IND 470NH 4.6A 29 MOHM SMD

1628
HK2125R47K-T

HK2125R47K-T

TAIYO YUDEN

FIXED IND 470NH 300MA 1.5 OHM

0
NRH2412T1R0NNGH

NRH2412T1R0NNGH

TAIYO YUDEN

FIXED IND 1UH 1.3A 92.4 MOHM SMD

0
MCHK1608T2R2MKN

MCHK1608T2R2MKN

TAIYO YUDEN

FIXED IND 2.2UH 1.52A 0.292 OHM

187
LBC2012T4R7MV

LBC2012T4R7MV

TAIYO YUDEN

FIXED IND 4.7UH 295MA 500 MOHM

0
NR6028T3R0N

NR6028T3R0N

TAIYO YUDEN

FIXED IND 3UH 3.4A 29.9 MOHM SMD

2914
MAKK2016H1R5M

MAKK2016H1R5M

TAIYO YUDEN

FIXED IND 1.5UH 1.8A 105 MOHM

1245
NRS6014T100MMGGV

NRS6014T100MMGGV

TAIYO YUDEN

FIXED IND 10UH 1.4A 168 MOHM SMD

0
LBR2518T4R7M

LBR2518T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 345MA 100 MOHM

2842
NRS4010T6R8MDGGV

NRS4010T6R8MDGGV

TAIYO YUDEN

FIXED IND 6.8UH 1A 240 MOHM SMD

0
LBC2518T2R2MV

LBC2518T2R2MV

TAIYO YUDEN

FIXED IND 2.2UH 630MA 130 MOHM

0
NRS5014T3R3NMGGV

NRS5014T3R3NMGGV

TAIYO YUDEN

FIXED IND 3.3UH 1.7A 96 MOHM SMD

0
LBM2016T101J

LBM2016T101J

TAIYO YUDEN

FIXED IND 100UH 80MA 8 OHM SMD

4037

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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