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Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
MPXV1D1770L100

MPXV1D1770L100

KEMET

FIXED IND 10UH 14.5A 12.2 MOHM

75
SBC8-100-692

SBC8-100-692

KEMET

FIXED IND 10UH 6.9A 20 MOHM TH

392
SBCP-11HY470H

SBCP-11HY470H

KEMET

FIXED IND 47UH 2A 100 MOHM TH

1540
MPXV1D1250LR68

MPXV1D1250LR68

KEMET

FIXED IND 680NH 32.7A 2MOHM SMD

250
SBC9-1R0-982

SBC9-1R0-982

KEMET

FIXED IND 1UH 9.8A 10 MOHM TH

1993
SBCP-14HY222B

SBCP-14HY222B

KEMET

FIXED IND 2.2MH 380MA 2.36 OHM

1495
MPEV1D1040L220

MPEV1D1040L220

KEMET

METAL INDUCTOR , A, MOHM, AEC-Q2

0
MPXV1D0530LR68

MPXV1D0530LR68

KEMET

FIXED IND 680NH 12.6A 8.2 MOHM

1000
SNG-25B-600

SNG-25B-600

KEMET

FIXED IND 600UH 20 MOHM CHASSIS

111
MPXV1D0520LR68

MPXV1D0520LR68

KEMET

FIXED IND 680NH 9.5A 12.2 MOHM

1000
MPCH0730LR12

MPCH0730LR12

KEMET

FIXED IND 120NH 31A 0.65 MOHM

2064
MPXV1D1054L100

MPXV1D1054L100

KEMET

FIXED IND 10UH 7.9A 27.6MOHM SMD

492
L0805C3R3MDMIT

L0805C3R3MDMIT

KEMET

FIXED IND 3.3UH 700MA 240 MOHM

2974
SBCP-47HY4R7B

SBCP-47HY4R7B

KEMET

FIXED IND 4.7UH 2.1A 43 MOHM TH

511
MPXV1D0520L2R2

MPXV1D0520L2R2

KEMET

FIXED IND 2.2UH 5.2A 40.4 MOHM

992
L1007C100MDWIT

L1007C100MDWIT

KEMET

FIXED IND 10UH 680MA 360 MOHM

1784
SBC2-471-271

SBC2-471-271

KEMET

FIXED IND 470UH 270MA 2 OHM TH

185
L0603CR15JRMST

L0603CR15JRMST

KEMET

FIXED IND 150NH 300MA 1.2 OHM

2219
MPCH1055L1R3

MPCH1055L1R3

KEMET

FIXED IND 1.3UH 18.5A 2.3 MOHM

1258
SBC6-150-382

SBC6-150-382

KEMET

FIXED IND 15UH 3.8A 30 MOHM TH

1535

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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