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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
CIG22BR27MNE

CIG22BR27MNE

Samsung Electro-Mechanics

FIXED IND 270NH 1.8A 47 MOHM SMD

0
CIL10Y120KNC

CIL10Y120KNC

Samsung Electro-Mechanics

FIXED IND 12UH 5MA 2.75OHM SMD

0
CIH10T12NJNC

CIH10T12NJNC

Samsung Electro-Mechanics

FIXED IND 12NH 600MA 280 MOHM

3833
CIH03Q1N0CNC

CIH03Q1N0CNC

Samsung Electro-Mechanics

FIXED IND 1NH 490MA 90 MOHM SMD

920
CIG10W1R0MNC

CIG10W1R0MNC

Samsung Electro-Mechanics

FIXED IND 1UH 950MA 200 MOHM SMD

464
CIGT201610LM1R0MNE

CIGT201610LM1R0MNE

Samsung Electro-Mechanics

FIXED IND 1UH 2.4A 72MOHM SMD

0
CIL10S150MNC

CIL10S150MNC

Samsung Electro-Mechanics

FIXED IND 15UH 1MA 1.7OHM SMD

0
CIGT252010LM1R5MNE

CIGT252010LM1R5MNE

Samsung Electro-Mechanics

FIXED IND 1.5UH 2.6A 78MOHM SMD

0
CIGT201610LMR47MNE

CIGT201610LMR47MNE

Samsung Electro-Mechanics

FIXED IND 470NH 3A 41MOHM SMD

1560
CIG22B2R2MNE

CIG22B2R2MNE

Samsung Electro-Mechanics

FIXED IND 2.2UH 1.1A 183 MOHM

449
CIGW252010GL1R5MNE

CIGW252010GL1R5MNE

Samsung Electro-Mechanics

FIXED IND 1.5UH 3.2A 54MOHM SMD

8457
CIG22E4R7MNE

CIG22E4R7MNE

Samsung Electro-Mechanics

FIXED IND 4.7UH 1A 265 MOHM SMD

0
CIL10S220KNC

CIL10S220KNC

Samsung Electro-Mechanics

FIXED IND 22UH 1MA 2.1OHM SMD

0
CIGT201610LM2R2MNE

CIGT201610LM2R2MNE

Samsung Electro-Mechanics

FIXED IND 2.2UH 1.6A 154 MOHM

19113
CIGT1608R6EH1R0MNC

CIGT1608R6EH1R0MNC

Samsung Electro-Mechanics

FIXED IND 1UH 1.7A 160 MOHM SMD

0
CIG22BR56MAE

CIG22BR56MAE

Samsung Electro-Mechanics

FIXED IND 560NH 1.4A 100 MOHM

0
CIGW201610GHR33MLE

CIGW201610GHR33MLE

Samsung Electro-Mechanics

FIXED IND 330NH 4A 23MOHM SMD

0
CIH05T68NJNC

CIH05T68NJNC

Samsung Electro-Mechanics

FIXED IND 68NH 180MA 1.4 OHM SMD

2980
CIGT201608EHR47MNE

CIGT201608EHR47MNE

Samsung Electro-Mechanics

FIXED IND 470NH 4.3A 27MOHM SMD

1504
CIGT201210UHR47MNE

CIGT201210UHR47MNE

Samsung Electro-Mechanics

FIXED IND 470NH 3.6A 31MOHM SMD

90516

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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