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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
LHL10TB272J

LHL10TB272J

TAIYO YUDEN

FIXED IND 2.7MH 240MA 4.3 OHM TH

0
NRS5030T100MMGJV

NRS5030T100MMGJV

TAIYO YUDEN

FIXED IND 10UH 1.7A 91 MOHM SMD

0
NRS6045T1R0NMGK

NRS6045T1R0NMGK

TAIYO YUDEN

FIXED IND 1UH 4.5A 18.2 MOHM SMD

46557
CB2012T100KR

CB2012T100KR

TAIYO YUDEN

FIXED IND 10UH 520MA 650 MOHM

30800
NRH2410T3R3MN

NRH2410T3R3MN

TAIYO YUDEN

FIXED IND 3.3UH 770MA 264 MOHM

2459
HKQ0603U4N6C-T

HKQ0603U4N6C-T

TAIYO YUDEN

FIXED IND 4.6NH 360MA 390 MOHM

3573
MAKK2520TR68M

MAKK2520TR68M

TAIYO YUDEN

FIXED IND 680NH 2.9A 59 MOHM SMD

0
HKQ0603W3N1B-T

HKQ0603W3N1B-T

TAIYO YUDEN

FIXED IND 3.1NH 500MA 200 MOHM

27555
CBC2016T6R8M

CBC2016T6R8M

TAIYO YUDEN

FIXED IND 6.8UH 450MA 767 MOHM

850
EST1060T330MDGA

EST1060T330MDGA

TAIYO YUDEN

FIXED IND 33UH 2.4A 73MOHM SMD

2112
MDKK3030TR47MM

MDKK3030TR47MM

TAIYO YUDEN

FIXED IND 470NH 3.5A 39 MOHM SMD

0
HKQ0603S18NH-T

HKQ0603S18NH-T

TAIYO YUDEN

FIXED IND 18NH 140MA 1.05 OHM

43580
MBKK2012T4R7M

MBKK2012T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 600MA 615 MOHM

14101
HK1608R22J-T

HK1608R22J-T

TAIYO YUDEN

FIXED IND 220NH 300MA 1.5 OHM

35375
HK212527NK-T

HK212527NK-T

TAIYO YUDEN

FIXED IND 27NH 300MA 550 MOHM

0
LHL10TB680K

LHL10TB680K

TAIYO YUDEN

FIXED IND 68UH 1.5A 120 MOHM TH

0
MBMK2520T4R7M

MBMK2520T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 800MA 380 MOHM

2324
NS10145T470MNA

NS10145T470MNA

TAIYO YUDEN

FIXED IND 47UH 1.8A 120 MOHM SMD

8847
CB2016T220MV

CB2016T220MV

TAIYO YUDEN

FIXED IND 22UH 190MA 1.3 OHM SMD

0
NRH2412T100MNGH

NRH2412T100MNGH

TAIYO YUDEN

FIXED IND 10UH 450MA 600 MOHM

2126

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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