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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
CIGT252007LM2R2MNC

CIGT252007LM2R2MNC

Samsung Electro-Mechanics

FIXED IND 2.2UH 1.6A 140 MOHM

6
CIH05T2N7SNC

CIH05T2N7SNC

Samsung Electro-Mechanics

FIXED IND 2.7NH 300MA 170 MOHM

14567
CIH05T33NJNC

CIH05T33NJNC

Samsung Electro-Mechanics

FIXED IND 33NH 250MA 1 OHM SMD

654
CIL10J1R0KNC

CIL10J1R0KNC

Samsung Electro-Mechanics

FIXED IND 1UH 25MA 600MOHM SMD

0
CIGT252008LMR47MNE

CIGT252008LMR47MNE

Samsung Electro-Mechanics

FIXED IND 470NH 4.2A 29MOHM SMD

0
CIGW201610GH1R5MLE

CIGW201610GH1R5MLE

Samsung Electro-Mechanics

FIXED IND 1.5UH 2.1A 85MOHM SMD

0
CIL10N68NKNC

CIL10N68NKNC

Samsung Electro-Mechanics

FIXED IND 68NH 50MA 300MOHM SMD

0
CIG10WR47MNC

CIG10WR47MNC

Samsung Electro-Mechanics

FIXED IND 470NH 1.1A 150 MOHM

0
CIGT201610LMR24MNE

CIGT201610LMR24MNE

Samsung Electro-Mechanics

FIXED IND 240NH 4A 23MOHM SMD

2965
CIL10J2R2KNC

CIL10J2R2KNC

Samsung Electro-Mechanics

FIXED IND 2.2UH 15MA 1.15OHM SMD

0
CIG22BR47MAE

CIG22BR47MAE

Samsung Electro-Mechanics

FIXED IND 470NH 1.6A 80 MOHM SMD

0
CIGW252010GL4R7MNE

CIGW252010GL4R7MNE

Samsung Electro-Mechanics

FIXED IND 4.7UH 1.4A 216 MOHM

0
CIL10NR15KNC

CIL10NR15KNC

Samsung Electro-Mechanics

FIXED IND 150NH 50MA 600MOHM SMD

0
CIGT252010LM2R2MNE

CIGT252010LM2R2MNE

Samsung Electro-Mechanics

FIXED IND 2.2UH 2.1A 97MOHM SMD

0
CIL10S180KNC

CIL10S180KNC

Samsung Electro-Mechanics

FIXED IND 18UH 1MA 1.85OHM SMD

0
CIG22H1R2MNE

CIG22H1R2MNE

Samsung Electro-Mechanics

FIXED IND 1.2UH 1.5A 94 MOHM SMD

0
CIGW252012GL4R7MNE

CIGW252012GL4R7MNE

Samsung Electro-Mechanics

FIXED IND 4.7UH SMD

1621
CIGT201610EH1R0MNE

CIGT201610EH1R0MNE

Samsung Electro-Mechanics

FIXED IND 1UH 4.1A 43MOHM SMD

0
CIGT201610UM1R5MNE

CIGT201610UM1R5MNE

Samsung Electro-Mechanics

FIXED IND 1.5UH 2.3A 110MOHM SMD

0
CIG22HR33MAE

CIG22HR33MAE

Samsung Electro-Mechanics

FIXED IND 330NH 2.2A 44 MOHM 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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