ample-chip ample-chip
RFQ
BOM

Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
SL3732H-R33LHF

SL3732H-R33LHF

ITG Electronics, Inc.

0.33UH, 15%, 0.29MOHM, 26AMP MAX

0
AF13A-150K

AF13A-150K

ITG Electronics, Inc.

FIXED IND 150NH 66A 0.17 MOHM

100
SLM474712A-R39MHF

SLM474712A-R39MHF

ITG Electronics, Inc.

0.39UH, 20%, 0.69MOHM, 81AMP MAX

250
SL1616A-R06LHF

SL1616A-R06LHF

ITG Electronics, Inc.

0.065UH, 15%, 0.32MOHM, 26AMP MA

2000
L301307-182K

L301307-182K

ITG Electronics, Inc.

1.8MH, 10%, 125MOHM, 1.5A MAX. T

9
AH43328B-R12KHF

AH43328B-R12KHF

ITG Electronics, Inc.

FIXED IND 120NH 70A 0.2 MOHM SMD

900
SM2511-3R3MHF

SM2511-3R3MHF

ITG Electronics, Inc.

3.3UH, 20%, 28MOHM, 13.5AMP MAX.

0
DHP106095S-120MHF

DHP106095S-120MHF

ITG Electronics, Inc.

12UH, 20%, 2.9MOHM, 32AMP MAX. D

30
SMHC2511-1R0MHF

SMHC2511-1R0MHF

ITG Electronics, Inc.

1UH, 20%, 9MOHM, 22AMP MAX. SMD

10000
SM1608A-4R7MHF

SM1608A-4R7MHF

ITG Electronics, Inc.

4.7UH, 20%, 103.4MOHM, 3AMP MAX.

3000
DHP106095S-220MHF

DHP106095S-220MHF

ITG Electronics, Inc.

24UH, 20%, 5.9MOHM, 23AMP MAX. D

30
SM2511-R47MHF

SM2511-R47MHF

ITG Electronics, Inc.

0.47UH, 20%, 4MOHM, 26AMP MAX. S

8000
DHP106095S-8R2MHF

DHP106095S-8R2MHF

ITG Electronics, Inc.

8.2UH, 20%, 2.2MOHM, 39.4AMP MAX

30
DHP106095S-470MHF

DHP106095S-470MHF

ITG Electronics, Inc.

44UH, 20%, 11.2MOHM, 17.4AMP MAX

30
SLA40476B-330L

SLA40476B-330L

ITG Electronics, Inc.

0.33UH, 15%, 0.125MOHM, 40AMP MA

300
SMHC2511-R10MHF

SMHC2511-R10MHF

ITG Electronics, Inc.

0.1UH, 20%, 1.5MOHM, 60AMP MAX.

3000
PQ108081-330MHF

PQ108081-330MHF

ITG Electronics, Inc.

33UH, 20%, 8.9MOHM, 19.8AMP MAX.

20
SMHC2511-4R7MHF

SMHC2511-4R7MHF

ITG Electronics, Inc.

4.7UH, 20%, 37MOHM, 10AMP MAX. S

20000
PQ108081-221MHF

PQ108081-221MHF

ITG Electronics, Inc.

220UH, 20%, 41.1MOHM, 6.5AMP MAX

20
SM2518-3R3MHF

SM2518-3R3MHF

ITG Electronics, Inc.

3.3UH, 20%, 19.9MOHM, 12AMP MAX.

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
RFQ BOM Call Skype Email
Top