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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
CBC3225T150KR

CBC3225T150KR

TAIYO YUDEN

FIXED IND 15UH 850MA 253.5 MOHM

17450
NRS5010T150MMGFV

NRS5010T150MMGFV

TAIYO YUDEN

FIXED IND 15UH 650MA 480 MOHM

0
CB2016T4R7M

CB2016T4R7M

TAIYO YUDEN

FIXED IND 4.7UH 740MA 325 MOHM

0
HK212515NK-T

HK212515NK-T

TAIYO YUDEN

FIXED IND 15NH 300MA 400 MOHM

0
CB2012T2R2MV

CB2012T2R2MV

TAIYO YUDEN

FIXED IND 2.2UH 620MA 299 MOHM

0
LHL10NB220K

LHL10NB220K

TAIYO YUDEN

FIXED IND 22UH 2.1A 61 MOHM TH

0
CK21251R0M-T

CK21251R0M-T

TAIYO YUDEN

FIXED IND 1UH 220MA 260 MOHM SMD

1470
NRS5020T1R5NMGJV

NRS5020T1R5NMGJV

TAIYO YUDEN

FIXED IND 1.5UH 3.2A 31.2 MOHM

1550
CBC3225T330MR

CBC3225T330MR

TAIYO YUDEN

FIXED IND 33UH 570MA 533 MOHM

1224
LB3218T151K

LB3218T151K

TAIYO YUDEN

FIXED IND 150UH 105MA 3.2 OHM

3935
LHL10NB150K

LHL10NB150K

TAIYO YUDEN

FIXED IND 15UH 2.6A 42 MOHM TH

0
CB2518T330K

CB2518T330K

TAIYO YUDEN

FIXED IND 33UH 460MA 910 MOHM

1950
HKQ040213NH-T

HKQ040213NH-T

TAIYO YUDEN

FIXED IND 13NH 140MA 1.32 OHM

0
NRS6010T3R3MMGF

NRS6010T3R3MMGF

TAIYO YUDEN

FIXED IND 3.3UH 1.5A 162 MOHM

972
HK10052N7S-TV

HK10052N7S-TV

TAIYO YUDEN

FIXED IND 2.7NH 300MA 130 MOHM

0
LK160847NM-T

LK160847NM-T

TAIYO YUDEN

FIXED IND 47NH 150MA 200 MOHM

0
NRS4012T150MDGJ

NRS4012T150MDGJ

TAIYO YUDEN

FIXED IND 15UH 750MA 312 MOHM

13062
LHL10NB222J

LHL10NB222J

TAIYO YUDEN

FIXED IND 2.2MH 250MA 3.9 OHM TH

0
MAMK2520TR47M

MAMK2520TR47M

TAIYO YUDEN

FIXED IND 470NH 3.4A 39 MOHM SMD

8590
NRS6014T4R7MMGG

NRS6014T4R7MMGG

TAIYO YUDEN

FIXED IND 4.7UH 1.95A 108 MOHM

1825

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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