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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
NRV3012T100MV

NRV3012T100MV

TAIYO YUDEN

FIXED IND 10UH 640MA 470 MOHM

0
LK2125100M-T

LK2125100M-T

TAIYO YUDEN

FIXED IND 10UH 15MA 800 MOHM SMD

0
LHL10NB103J

LHL10NB103J

TAIYO YUDEN

FIXED IND 10MH 120MA 19 OHM TH

0
LHL10TB271K

LHL10TB271K

TAIYO YUDEN

FIXED IND 270UH 700MA 500 MOHM

0
MBMK2520H3R3M

MBMK2520H3R3M

TAIYO YUDEN

FIXED IND 3.3UH 970MA 260 MOHM

0
LK21252R7M-T

LK21252R7M-T

TAIYO YUDEN

FIXED IND 2.7UH 50MA 550 MOHM

0
LHL08TB103J

LHL08TB103J

TAIYO YUDEN

FIXED IND 10MH 70MA 32 OHM TH

0
NRH2412T3R3MNGHV

NRH2412T3R3MNGHV

TAIYO YUDEN

FIXED IND 3.3UH 750MA 270 MOHM

0
NS12575T3R9NN

NS12575T3R9NN

TAIYO YUDEN

FIXED IND 3.9UH 7.38A 11.88 MOHM

1072
LB2016T1R0MV

LB2016T1R0MV

TAIYO YUDEN

FIXED IND 1UH 490MA 90 MOHM SMD

0
NS10145T1R5NNA

NS10145T1R5NNA

TAIYO YUDEN

FIXED IND 1.5UH 7.99A 7.2 OHM

0
LBR2518T4R7MV

LBR2518T4R7MV

TAIYO YUDEN

FIXED IND 4.7UH 345MA 100 MOHM

1310
LBM2016T270J

LBM2016T270J

TAIYO YUDEN

FIXED IND 27UH 130MA 3.2 OHM SMD

5857
NRS8040T1R4NJGJ

NRS8040T1R4NJGJ

TAIYO YUDEN

FIXED IND 1.4UH 7A 9.1 MOHM SMD

973
HKQ0603U5N1C-T

HKQ0603U5N1C-T

TAIYO YUDEN

FIXED IND 5.1NH 330MA 450 MOHM

13975
HKQ0603S1N0C-T

HKQ0603S1N0C-T

TAIYO YUDEN

FIXED IND 1NH 490MA 90 MOHM SMD

379
HKQ0603U1N0B-T

HKQ0603U1N0B-T

TAIYO YUDEN

FIXED IND 1NH 850MA 70 MOHM SMD

14788
NRH3012T1R5NN

NRH3012T1R5NN

TAIYO YUDEN

FIXED IND 1.5UH 1.6A 66 MOHM SMD

50
NRS8030T1R0NJGJV

NRS8030T1R0NJGJV

TAIYO YUDEN

FIXED IND 1UH 6.2A 11.7 MOHM SMD

0
MDKK1616T6R8MM

MDKK1616T6R8MM

TAIYO YUDEN

FIXED IND 6.8UH 520MA 820 MOHM

465

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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