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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
CIGT201608LMR24MNE

CIGT201608LMR24MNE

Samsung Electro-Mechanics

FIXED IND 240NH 3.6A 23MOHM SMD

0
CIGT201210UHR33MNE

CIGT201210UHR33MNE

Samsung Electro-Mechanics

FIXED IND 330NH 4A 26MOHM SMD

0
CIGT160808XMR24MNC

CIGT160808XMR24MNC

Samsung Electro-Mechanics

FIXED IND 240NH 4.9A 24 MOHM SMD

12027
CIL10NR68KNC

CIL10NR68KNC

Samsung Electro-Mechanics

FIXED IND 680NH 35MA 1.7OHM SMD

0
CIL10NR39KNC

CIL10NR39KNC

Samsung Electro-Mechanics

FIXED IND 390NH 35MA 1OHM SMD

0
CIGT201208EH1R0MNE

CIGT201208EH1R0MNE

Samsung Electro-Mechanics

FIXED IND 1UH 3.1A 55MOHM SMD

0
CIL10NR10KNC

CIL10NR10KNC

Samsung Electro-Mechanics

FIXED IND 100NH 50MA 500MOHM SMD

0
CIL10J1R8KNC

CIL10J1R8KNC

Samsung Electro-Mechanics

FIXED IND 1.8UH 25MA 950MOHM SMD

0
CIL10Y120MNC

CIL10Y120MNC

Samsung Electro-Mechanics

FIXED IND 12UH 5MA 2.75OHM SMD

0
CIGT252010LMR24MNE

CIGT252010LMR24MNE

Samsung Electro-Mechanics

FIXED IND 240NH 6A 16MOHM SMD

80629
CIL10NR47KNC

CIL10NR47KNC

Samsung Electro-Mechanics

FIXED IND 470NH 35MA 1.35OHM SMD

0
CIG22B3R3MAE

CIG22B3R3MAE

Samsung Electro-Mechanics

FIXED IND 3.3UH 1A 220 MOHM SMD

0
CIGW160808XMR47MLC

CIGW160808XMR47MLC

Samsung Electro-Mechanics

FIXED IND 470NH 3A 43MOHM SMD

0
CIL10Y5R6KNC

CIL10Y5R6KNC

Samsung Electro-Mechanics

FIXED IND 5.6UH 5MA 1.55OHM SMD

0
CIL10Y6R8KNC

CIL10Y6R8KNC

Samsung Electro-Mechanics

FIXED IND 6.8UH 5MA 1.7OHM SMD

0
CIG22B2R2MAE

CIG22B2R2MAE

Samsung Electro-Mechanics

FIXED IND 2.2UH 1.1A 190 MOHM

0
CIL10Y100KNC

CIL10Y100KNC

Samsung Electro-Mechanics

FIXED IND 10UH 5MA 2.55OHM SMD

0
CIG10WR27MNC

CIG10WR27MNC

Samsung Electro-Mechanics

FIXED IND 270NH 1.3A 120 MOHM

2766
CIGW201610GLR47MLE

CIGW201610GLR47MLE

Samsung Electro-Mechanics

FIXED IND 470NH 5.3A 26MOHM SMD

0
CIL10N82NKNC

CIL10N82NKNC

Samsung Electro-Mechanics

FIXED IND 82NH 50MA 300MOHM SMD

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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