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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
BRC2518T100M

BRC2518T100M

TAIYO YUDEN

FIXED IND 10UH 610MA 455 MOHM

0
LB2012T101K

LB2012T101K

TAIYO YUDEN

FIXED IND 100UH 45MA 7 OHM SMD

14069
NRV3012T2R2MV

NRV3012T2R2MV

TAIYO YUDEN

FIXED IND 2.2UH 1.1A 144 MOHM

3934
HK10056N8J-TV

HK10056N8J-TV

TAIYO YUDEN

FIXED IND 6.8NH 300MA 250 MOHM

683
CKP20162R2M-T

CKP20162R2M-T

TAIYO YUDEN

FIXED IND 2.2UH 1.2A 140 MOHM

3563
LK21253R3K-T

LK21253R3K-T

TAIYO YUDEN

FIXED IND 3.3UH 50MA 600 MOHM

0
CKP2520M1R5M-T

CKP2520M1R5M-T

TAIYO YUDEN

FIXED IND 1.5UH 1.3A 90 MOHM SMD

0
NRS5030TR47NMGJV

NRS5030TR47NMGJV

TAIYO YUDEN

FIXED IND 470NH 5A 13 MOHM SMD

0
LK1005R47K-TV

LK1005R47K-TV

TAIYO YUDEN

FIXED IND 470NH 20MA 420 MOHM

15949
NRS5010T1R0NMGF

NRS5010T1R0NMGF

TAIYO YUDEN

FIXED IND 1UH 2A 84 MOHM SMD

0
MDMK3030TR47MMV

MDMK3030TR47MMV

TAIYO YUDEN

FIXED IND 470NH 4.7A 27 MOHM SMD

0
BRC1608TR82M6

BRC1608TR82M6

TAIYO YUDEN

FIXED IND 820NH 730MA 176 MOHM

1784
LHL10NB124J

LHL10NB124J

TAIYO YUDEN

FIXED IND 120MH 30MA 260 OHM TH

0
LK1608R10M-T

LK1608R10M-T

TAIYO YUDEN

FIXED IND 100NH 150MA 350 MOHM

0
CBC2016T101K

CBC2016T101K

TAIYO YUDEN

FIXED IND 100UH 110MA 10.4 OHM

0
CB2016T3R3M

CB2016T3R3M

TAIYO YUDEN

FIXED IND 3.3UH 800MA 260 MOHM

2694
MAMK2520T1R0M

MAMK2520T1R0M

TAIYO YUDEN

FIXED IND 1UH 2.7A 59 MOHM SMD

278583
NRM6045T330MMRRV

NRM6045T330MMRRV

TAIYO YUDEN

FIXED INUCTOR 33UH 216 MOHM SMD

0
NRS5010T100MMGF

NRS5010T100MMGF

TAIYO YUDEN

FIXED IND 10UH 950MA 300 MOHM

1623
HK212522NJ-T

HK212522NJ-T

TAIYO YUDEN

FIXED IND 22NH 300MA 500 MOHM

4029

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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