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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
NRS6020T3R3NMGJ

NRS6020T3R3NMGJ

TAIYO YUDEN

FIXED IND 3.3UH 2.75A 48 MOHM

13021
MDMK3030T4R7MM

MDMK3030T4R7MM

TAIYO YUDEN

FIXED IND 4.7UH 1.3A 263 MOHM

2000
LBC3225T2R2MRV

LBC3225T2R2MRV

TAIYO YUDEN

FIXED IND 2.2UH 930MA 80 MOHM

210
EST1060T3R3NDGA

EST1060T3R3NDGA

TAIYO YUDEN

FIXED IND 3.3UH 6.5A 12MOHM SMD

0
LBM2016T2R7JV

LBM2016T2R7JV

TAIYO YUDEN

FIXED IND 2.7UH 310MA 767 MOHM

0
NRS2012T3R3MGJ

NRS2012T3R3MGJ

TAIYO YUDEN

FIXED IND 3.3UH 1.02A 190 MOHM

224
LBC2016T150M

LBC2016T150M

TAIYO YUDEN

FIXED IND 15UH 200MA 1.2 OHM SMD

0
MDKK2020T100MM

MDKK2020T100MM

TAIYO YUDEN

FIXED IND 10UH 630MA 690 MOHM

3000
HK10058N2J-T

HK10058N2J-T

TAIYO YUDEN

FIXED IND 8.2NH 380MA 280 MOHM

29573
CBC2518T471M

CBC2518T471M

TAIYO YUDEN

FIXED IND 470UH 70MA 28.6 OHM

0
LBC2518T470MV

LBC2518T470MV

TAIYO YUDEN

FIXED IND 47UH 165MA 2.47 OHM

0
NRS5020T3R3NMGJV

NRS5020T3R3NMGJV

TAIYO YUDEN

FIXED IND 3.3UH 2.4A 57.6 MOHM

0
NRS6045T100MMGKV

NRS6045T100MMGKV

TAIYO YUDEN

FIXED IND 10UH 2.4A 59.8 MOHM

1200
NRS4010T2R2MDGG

NRS4010T2R2MDGG

TAIYO YUDEN

FIXED IND 2.2UH 1.5A 85 MOHM SMD

6186
NRS6020T3R3NMGJV

NRS6020T3R3NMGJV

TAIYO YUDEN

FIXED IND 3.3UH 2.75A 48 MOHM

0
HK212518NJ-T

HK212518NJ-T

TAIYO YUDEN

FIXED IND 18NH 300MA 450 MOHM

0
HK06031N2S-T

HK06031N2S-T

TAIYO YUDEN

FIXED IND 1.2NH 450MA 120 MOHM

14392
LK16081R5K-T

LK16081R5K-T

TAIYO YUDEN

FIXED IND 1.5UH 40MA 700 MOHM

3889
NR6028T330M

NR6028T330M

TAIYO YUDEN

FIXED IND 33UH 1.1A 286 MOHM SMD

64001
CBMF1608T2R2M

CBMF1608T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 560MA 221 MOHM

10465

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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