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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
NRS8040T101MJGK

NRS8040T101MJGK

TAIYO YUDEN

FIXED IND 100UH 1A 364 MOHM SMD

1990
NRH3010T470MN

NRH3010T470MN

TAIYO YUDEN

FIXED IND 47UH 250MA 2.46 OHM

0
NR6020T2R2N

NR6020T2R2N

TAIYO YUDEN

FIXED IND 2.2UH 2.7A 40.8 MOHM

137138
CB2518T470K

CB2518T470K

TAIYO YUDEN

FIXED IND 47UH 420MA 1.235 OHM

7625
LK21258R2K-T

LK21258R2K-T

TAIYO YUDEN

FIXED IND 8.2UH 15MA 700 MOHM

0
HK2125R15J-T

HK2125R15J-T

TAIYO YUDEN

FIXED IND 150NH 300MA 1 OHM SMD

0
NRS5014T4R7NMGGV

NRS5014T4R7NMGGV

TAIYO YUDEN

FIXED IND 4.7UH 1.4A 120 MOHM

19
HK16086N8J-T

HK16086N8J-T

TAIYO YUDEN

FIXED IND 6.8NH 300MA 220 MOHM

5730
NRS6020T6R8NMGJV

NRS6020T6R8NMGJV

TAIYO YUDEN

FIXED IND 6.8UH 1.8A 102 MOHM

0
NS12555T6R0NNV

NS12555T6R0NNV

TAIYO YUDEN

FIXED IND 6UH 5.6A 16.8MOHM SMD

0
NRS4018T4R7MDGJV

NRS4018T4R7MDGJV

TAIYO YUDEN

FIXED IND 4.7UH 1.7A 84 MOHM SMD

2404
NS12575T6R8NN

NS12575T6R8NN

TAIYO YUDEN

FIXED IND 6.8UH 5.84A 15.72 MOHM

1907
NRS8040T2R0NJGJ

NRS8040T2R0NJGJ

TAIYO YUDEN

FIXED IND 2UH 6.3A 11.7 MOHM SMD

1165
NRS6045T150MMGK

NRS6045T150MMGK

TAIYO YUDEN

FIXED IND 15UH 1.9A 91 MOHM SMD

5
NRS5030T4R7MMGJV

NRS5030T4R7MMGJV

TAIYO YUDEN

FIXED IND 4.7UH 2.6A 45.5 MOHM

85
MBMK2520H2R2M

MBMK2520H2R2M

TAIYO YUDEN

FIXED IND 2.2UH 1.25A 159 MOHM

1473
CKP2520N2R2M-T

CKP2520N2R2M-T

TAIYO YUDEN

FIXED IND 2.2UH 1.2A 115 MOHM

0
NR10050T2R1N

NR10050T2R1N

TAIYO YUDEN

FIXED IND 2.1UH 8.3A 10.4 MOHM

458
CBMF1608T470K

CBMF1608T470K

TAIYO YUDEN

FIXED IND 47UH 140MA 3.25 OHM

332176
NRS4010T4R7MDGGV

NRS4010T4R7MDGGV

TAIYO YUDEN

FIXED IND 4.7UH 1.2A 168 MOHM

2164

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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