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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
HK212556NJ-T

HK212556NJ-T

TAIYO YUDEN

FIXED IND 56NH 300MA 750 MOHM

0
LBC2012T2R2M

LBC2012T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 430MA 330 MOHM

0
CB2016T220K

CB2016T220K

TAIYO YUDEN

FIXED IND 22UH 370MA 1.3 OHM SMD

541
LK160868NM-T

LK160868NM-T

TAIYO YUDEN

FIXED IND 68NH 150MA 300 MOHM

0
MCHK1608T1R0MKN

MCHK1608T1R0MKN

TAIYO YUDEN

FIXED IND 1.0UH 2.2A 110 MOHM

11969
NS12565T151MNV

NS12565T151MNV

TAIYO YUDEN

FIXED IND 150UH 1.54A 208 MOHM

0
LBM2016T1R5JV

LBM2016T1R5JV

TAIYO YUDEN

FIXED IND 1.5UH 350MA 611 MOHM

0
NR4010T1R0N

NR4010T1R0N

TAIYO YUDEN

FIXED IND 1UH 1.05A 120 MOHM SMD

0
CBC2518T1R5MV

CBC2518T1R5MV

TAIYO YUDEN

FIXED IND 1.5UH 730MA 143 MOHM

0
LK10052R2M-TV

LK10052R2M-TV

TAIYO YUDEN

FIXED IND 2.2UH 20MA 1.15 OHM

0
HKQ0603U1N2B-T

HKQ0603U1N2B-T

TAIYO YUDEN

FIXED IND 1.2NH 800MA 80 MOHM

100
CBC2518T151M

CBC2518T151M

TAIYO YUDEN

FIXED IND 150UH 130MA 7.93 OHM

0
LB2012T470M

LB2012T470M

TAIYO YUDEN

FIXED IND 47UH 60MA 3.7 OHM SMD

23950
HK160839NK-T

HK160839NK-T

TAIYO YUDEN

FIXED IND 39NH 300MA 600 MOHM

0
HK21252N7S-T

HK21252N7S-T

TAIYO YUDEN

FIXED IND 2.7NH 300MA 100 MOHM

5841
NRS5030T330MMGJV

NRS5030T330MMGJV

TAIYO YUDEN

FIXED IND 33UH 800MA 292.5 MOHM

269
NRS5024T1R5NMGJV

NRS5024T1R5NMGJV

TAIYO YUDEN

FIXED IND 1.5UH 3.6A 26.4 MOHM

1480
NR10050T1R3N

NR10050T1R3N

TAIYO YUDEN

FIXED IND 1.3UH 9A 8.84 MOHM SMD

0
LB2518T680K

LB2518T680K

TAIYO YUDEN

FIXED IND 68UH 70MA 1.5 OHM SMD

0
NRS6012T3R3NMGGV

NRS6012T3R3NMGGV

TAIYO YUDEN

FIXED IND 3.3UH 1.7A 126 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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