ample-chip ample-chip
RFQ
BOM

Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
IFLR4027EZER85NM01

IFLR4027EZER85NM01

Vishay / Dale

FIXED IND 85NH 50A 0.42 MOHM SMD

413
IMC1812EB82NK

IMC1812EB82NK

Vishay / Dale

FIXED IND 82NH 450MA 400 MOHM

0
ISC1812ES2R2J

ISC1812ES2R2J

Vishay / Dale

FIXED IND 2.2UH 390MA 460 MOHM

0
IHLP2020ABER3R3M01

IHLP2020ABER3R3M01

Vishay / Dale

FIXED IND 3.3UH 2.8A 103 MOHM

3937
ISC1210BN1R0J

ISC1210BN1R0J

Vishay / Dale

FIXED IND 1UH 400MA 600 MOHM SMD

0
IHLP5050EZER5R6M01

IHLP5050EZER5R6M01

Vishay / Dale

FIXED IND 5.6UH 11.5A 16.5 MOHM

0
IMC1812ES331J

IMC1812ES331J

Vishay / Dale

FIXED IND 330UH 85MA 14 OHM SMD

0
ISC1210EBR39M

ISC1210EBR39M

Vishay / Dale

FIXED IND 390NH 465MA 400 MOHM

0
ILSB0805ER3R9K

ILSB0805ER3R9K

Vishay / Dale

FIXED IND 3.9UH 30MA 900 MOHM

0
ISC1210SY15NK

ISC1210SY15NK

Vishay / Dale

FIXED IND 15NH 720MA 120 MOHM

0
ISC1812RXR39K

ISC1812RXR39K

Vishay / Dale

FIXED IND 390NH 394MA 450 MOHM

0
ISC1812EBR68J

ISC1812EBR68J

Vishay / Dale

FIXED IND 680NH 296MA 800 MOHM

0
IMC1210BN120K

IMC1210BN120K

Vishay / Dale

FIXED IND 12UH 173MA 2.5 OHM SMD

0
ISC1812RV102J

ISC1812RV102J

Vishay / Dale

FIXED IND 1MH 66MA 16 OHM SMD

0
ILSB0805RKR12K

ILSB0805RKR12K

Vishay / Dale

FIXED IND 120NH 250MA 300 MOHM

0
IHSM4825ER100L

IHSM4825ER100L

Vishay / Dale

FIXED IND 10UH 3.1A 71 MOHM SMD

1624
IMC1210ER221K

IMC1210ER221K

Vishay / Dale

FIXED IND 220UH 50MA 21 OHM SMD

1
ISC1812ER681K

ISC1812ER681K

Vishay / Dale

FIXED IND 680UH 76MA 12 OHM SMD

3386
IHLP1616BZER1R0M01

IHLP1616BZER1R0M01

Vishay / Dale

FIXED IND 1UH 3.75A 37 MOHM SMD

15433
IHD3ER681L

IHD3ER681L

Vishay / Dale

FIXED IND 680UH 1A 570 MOHM TH

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