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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
AQ1056N2S-T

AQ1056N2S-T

TAIYO YUDEN

FIXED IND 6.2NH 520MA 220 MOHM

0
NRS5020T220MMGJV

NRS5020T220MMGJV

TAIYO YUDEN

FIXED IND 22UH 1A 312 MOHM SMD

2476
CKP2520V1R0M-T

CKP2520V1R0M-T

TAIYO YUDEN

FIXED IND 1UH 1.5A 120 MOHM SMD

0
LHL10TB331K

LHL10TB331K

TAIYO YUDEN

FIXED IND 330UH 680MA 560 MOHM

0
CK2125R10M-T

CK2125R10M-T

TAIYO YUDEN

FIXED IND 100NH 500MA 160 MOHM

31868
NRS4018T1R0NDGJ

NRS4018T1R0NDGJ

TAIYO YUDEN

FIXED IND 1UH 3.2A 32.4 MOHM SMD

2793
NR6020T220M

NR6020T220M

TAIYO YUDEN

FIXED IND 22UH 950MA 348 MOHM

26641
NR8040T1R4N

NR8040T1R4N

TAIYO YUDEN

FIXED IND 1.4UH 7A 9.1 MOHM SMD

1176
NR6028T101M

NR6028T101M

TAIYO YUDEN

FIXED IND 100UH 660MA 780 MOHM

1103
LB2016T101K

LB2016T101K

TAIYO YUDEN

FIXED IND 100UH 40MA 4.5 OHM SMD

1080
HK212556NK-T

HK212556NK-T

TAIYO YUDEN

FIXED IND 56NH 300MA 750 MOHM

0
NRS4018T101MDGJ

NRS4018T101MDGJ

TAIYO YUDEN

FIXED IND 100UH 280MA 1.74 OHM

4676
CK2125R33M-T

CK2125R33M-T

TAIYO YUDEN

FIXED IND 330NH 400MA 280 MOHM

0
NRS5010T3R3MMGF

NRS5010T3R3MMGF

TAIYO YUDEN

FIXED IND 3.3UH 1.52A 150 MOHM

0
NRS8030T2R2NJGJV

NRS8030T2R2NJGJV

TAIYO YUDEN

FIXED IND 2.2UH 4.8A 19.5 MOHM

766
BRL3225T6R8M

BRL3225T6R8M

TAIYO YUDEN

FIXED IND 6.8UH 770MA 324 MOHM

3017
NRS4012T470MDGJ

NRS4012T470MDGJ

TAIYO YUDEN

FIXED IND 47UH 350MA 924 MOHM

0
NR10050T4R9N

NR10050T4R9N

TAIYO YUDEN

FIXED IND 4.9UH 6A 19.5 MOHM SMD

297
NR3015T1R0N

NR3015T1R0N

TAIYO YUDEN

FIXED IND 1UH 2.1A 36 MOHM SMD

41989
BRL2012TR47M

BRL2012TR47M

TAIYO YUDEN

FIXED IND 470NH 1.05A 117 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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