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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
HK10052N0S-T

HK10052N0S-T

TAIYO YUDEN

FIXED IND 2NH 700MA 120 MOHM SMD

9672
NS12575T221MN

NS12575T221MN

TAIYO YUDEN

FIXED IND 220UH 1.35A 245 MOHM

3692
BRC2518T1R0M

BRC2518T1R0M

TAIYO YUDEN

FIXED IND 1UH 1.65A 50 MOHM SMD

1689
HKQ0603U9N4H-T

HKQ0603U9N4H-T

TAIYO YUDEN

FIXED IND 9.4NH 250MA 730 MOHM

15765
NR4018T4R7M

NR4018T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 1.2A 108 MOHM

56814
LB2518T330K

LB2518T330K

TAIYO YUDEN

FIXED IND 33UH 95MA 700 MOHM SMD

0
MBKK1608TR47N

MBKK1608TR47N

TAIYO YUDEN

FIXED IND 470NH 1.4A 104 MOHM

2632
CBC2518T151MV

CBC2518T151MV

TAIYO YUDEN

FIXED IND 150UH 95MA 7.93 OHM

0
NRS6020T4R7NMGJV

NRS6020T4R7NMGJV

TAIYO YUDEN

FIXED IND 4.7UH 2.15A 69.6 MOHM

0
LB2012T680K

LB2012T680K

TAIYO YUDEN

FIXED IND 68UH 50MA 6 OHM SMD

2735
LBM2016TR12J

LBM2016TR12J

TAIYO YUDEN

FIXED IND 120NH 610MA 130 MOHM

2046
LBR2012T470KV

LBR2012T470KV

TAIYO YUDEN

FIXED IND 47UH 75MA 1.7 OHM SMD

498
CB2016T100M

CB2016T100M

TAIYO YUDEN

FIXED IND 10UH 520MA 650 MOHM

1785
CBC2518T101K

CBC2518T101K

TAIYO YUDEN

FIXED IND 100UH 170MA 4.81 OHM

6628
LBC3225T1R0MRV

LBC3225T1R0MRV

TAIYO YUDEN

FIXED IND 1UH 1.1A 55 MOHM SMD

0
LB3218T220K

LB3218T220K

TAIYO YUDEN

FIXED IND 22UH 255MA 490 MOHM

4483
NR4018T330M

NR4018T330M

TAIYO YUDEN

FIXED IND 33UH 490MA 636 MOHM

1719
LHL08TB3R3M

LHL08TB3R3M

TAIYO YUDEN

FIXED IND 3.3UH 3.2A 21 MOHM TH

0
LBC2518T151KV

LBC2518T151KV

TAIYO YUDEN

FIXED IND 150UH 95MA 7.93 OHM

0
NRS5040T100MMGJ

NRS5040T100MMGJ

TAIYO YUDEN

FIXED IND 10UH 2.1A 72.8 MOHM

2308

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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