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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
MBKK2012T1R5M

MBKK2012T1R5M

TAIYO YUDEN

FIXED IND 1.5UH 1.1A 173 MOHM

1409
CB2518T220K

CB2518T220K

TAIYO YUDEN

FIXED IND 22UH 580MA 650 MOHM

11414
BRL2518T4R7M

BRL2518T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 470MA 520 MOHM

1359
NRS6012T4R7MMGGV

NRS6012T4R7MMGGV

TAIYO YUDEN

FIXED IND 4.7UH 1.55A 150 MOHM

1247
LBC3225T150MR

LBC3225T150MR

TAIYO YUDEN

FIXED IND 15UH 420MA 195 MOHM

0
NRS5024T220MMGJ

NRS5024T220MMGJ

TAIYO YUDEN

FIXED IND 22UH 820MA 230 MOHM

0
BRC1608T1R0M

BRC1608T1R0M

TAIYO YUDEN

FIXED IND 1UH 520MA 234 MOHM SMD

34418
LB3218T3R3M

LB3218T3R3M

TAIYO YUDEN

FIXED IND 3.3UH 560MA 110 MOHM

1821
NRS6045T330MMGK

NRS6045T330MMGK

TAIYO YUDEN

FIXED IND 33UH 1.4A 183.3 MOHM

0
AQ1053N0S-T

AQ1053N0S-T

TAIYO YUDEN

FIXED IND 3NH 740MA 110 MOHM SMD

0
NRV3012T2R2M

NRV3012T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 1.1A 144 MOHM

0
CBC2518T470M

CBC2518T470M

TAIYO YUDEN

FIXED IND 47UH 290MA 2.47 OHM

26756
HKQ0603S5N1C-T

HKQ0603S5N1C-T

TAIYO YUDEN

FIXED IND 5.1NH 210MA 490 MOHM

5141
MDKK2020TR68MM

MDKK2020TR68MM

TAIYO YUDEN

FIXED IND 680NH 2A 60 MOHM SMD

0
LB2012T100M

LB2012T100M

TAIYO YUDEN

FIXED IND 10UH 120MA 700 MOHM

1128
LBM2016TR47JV

LBM2016TR47JV

TAIYO YUDEN

FIXED IND 470NH 430MA 338 MOHM

0
NRS2012T2R2MGJV

NRS2012T2R2MGJV

TAIYO YUDEN

FIXED IND 2.2UH 1.37A 107 MOHM

127
HKQ04022N2C-T

HKQ04022N2C-T

TAIYO YUDEN

FIXED IND 2.2NH 270MA 270 MOHM

0
LBC3225T101KR

LBC3225T101KR

TAIYO YUDEN

FIXED IND 100UH 150MA 1.4 OHM

35503
HK16086N8K-T

HK16086N8K-T

TAIYO YUDEN

FIXED IND 6.8NH 300MA 220 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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