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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
LBM2016T390J

LBM2016T390J

TAIYO YUDEN

FIXED IND 39UH 120MA 3.9 OHM SMD

661
NR8040T4R7N

NR8040T4R7N

TAIYO YUDEN

FIXED IND 4.7UH 4.1A 23.4 MOHM

8241
LBM2016T220JV

LBM2016T220JV

TAIYO YUDEN

FIXED IND 22UH 140MA 3.64 OHM

0
NS10155T2R2NNA

NS10155T2R2NNA

TAIYO YUDEN

FIXED IND 2.2UH 7.61A 8.4 MOHM

0
NRS6012T4R7MMGG

NRS6012T4R7MMGG

TAIYO YUDEN

FIXED IND 4.7UH 1.55A 150 MOHM

48
NRS5020T1R0NMGJ

NRS5020T1R0NMGJ

TAIYO YUDEN

FIXED IND 1UH 3.6A 25.2 MOHM SMD

36
CBL2012T2R2M

CBL2012T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 590MA 507 MOHM

19990
LBC2518T3R3M

LBC2518T3R3M

TAIYO YUDEN

FIXED IND 3.3UH 560MA 208 MOHM

7480
NR8040T220M

NR8040T220M

TAIYO YUDEN

FIXED IND 22UH 2.2A 85.8 MOHM

2928
LK16086R8M-T

LK16086R8M-T

TAIYO YUDEN

FIXED IND 6.8UH 10MA 1.3 OHM SMD

0
BRC2518T4R7M

BRC2518T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 750MA 230 MOHM

1239
LBR2518T2R2MV

LBR2518T2R2MV

TAIYO YUDEN

FIXED IND 2.2UH 480MA 70 MOHM

0
HK2125R10K-T

HK2125R10K-T

TAIYO YUDEN

FIXED IND 100NH 300MA 900 MOHM

0
CB2012T220K

CB2012T220K

TAIYO YUDEN

FIXED IND 22UH 280MA 2.21 OHM

34181
CBC2012T100M

CBC2012T100M

TAIYO YUDEN

FIXED IND 10UH 340MA 1.56 OHM

10159
CBC2016T100K

CBC2016T100K

TAIYO YUDEN

FIXED IND 10UH 350MA 1.066 OHM

3673
MEKK2520T2R2M

MEKK2520T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 2.4A 97 MOHM SMD

4653
BRL3225TR51M

BRL3225TR51M

TAIYO YUDEN

FIXED IND 510NH 2.55A 37.7 MOHM

2130
BRL3225T220K

BRL3225T220K

TAIYO YUDEN

FIXED IND 22UH 470MA 828 MOHM

114
LB2016T1R5M

LB2016T1R5M

TAIYO YUDEN

FIXED IND 1.5UH 380MA 110 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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