ample-chip ample-chip
RFQ
BOM

Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
CB2518T470M

CB2518T470M

TAIYO YUDEN

FIXED IND 47UH 420MA 1.235 OHM

0
NRS6028T4R7MMGK

NRS6028T4R7MMGK

TAIYO YUDEN

FIXED IND 4.7UH 3A 40.3 MOHM SMD

1795
MDJE4040T1R5MM

MDJE4040T1R5MM

TAIYO YUDEN

FIXED IND 1.5UH 3.1A 84 MOHM SMD

0
LHL10NB683J

LHL10NB683J

TAIYO YUDEN

FIXED IND 68MH 35MA 200 OHM TH

0
LBC2518T101K

LBC2518T101K

TAIYO YUDEN

FIXED IND 100UH 125MA 3.7 OHM

2046
HKQ0603W3N8B-T

HKQ0603W3N8B-T

TAIYO YUDEN

FIXED IND 3.8NH 500MA 200 MOHM

2534
HK1005R15J-T

HK1005R15J-T

TAIYO YUDEN

FIXED IND 150NH 200MA 3.2 OHM

69254
MDKK2020TR47MM

MDKK2020TR47MM

TAIYO YUDEN

FIXED IND 470NH 2.2A 46 MOHM SMD

0
MDKK2020T100MMV

MDKK2020T100MMV

TAIYO YUDEN

FIXED IND 10UH 680MA 690 MOHM

0
LBC2518T471M

LBC2518T471M

TAIYO YUDEN

FIXED IND 470UH 50MA 22 OHM SMD

0
NR3015T150M

NR3015T150M

TAIYO YUDEN

FIXED IND 15UH 560MA 432 MOHM

11965
MDMK4040T2R2MMV

MDMK4040T2R2MMV

TAIYO YUDEN

FIXED IND 2.2UH 2.8A 79MOHM SMD

1015
LBR2518T2R2M

LBR2518T2R2M

TAIYO YUDEN

FIXED IND 2.2UH 480MA 70 MOHM

776
CBC3225T4R7MRV

CBC3225T4R7MRV

TAIYO YUDEN

FIXED IND 4.7UH 830MA 130 MOHM

875
LK2125R39K-T

LK2125R39K-T

TAIYO YUDEN

FIXED IND 390NH 200MA 450 MOHM

0
LHL10TB124J

LHL10TB124J

TAIYO YUDEN

FIXED IND 120MH 30MA 260 OHM TH

0
MBMK2520T3R3M

MBMK2520T3R3M

TAIYO YUDEN

FIXED IND 3.3UH 970MA 260 MOHM

1231
EST1040T471MDGA

EST1040T471MDGA

TAIYO YUDEN

FIXED IND 470UH 250MA 1.44 OHM

1359
LK1608R39M-T

LK1608R39M-T

TAIYO YUDEN

FIXED IND 390NH 80MA 850 MOHM

0
HK100518NJ-TV

HK100518NJ-TV

TAIYO YUDEN

FIXED IND 18NH 300MA 550 MOHM

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