ample-chip ample-chip
RFQ
BOM

Fixed Inductors

Image Part Number Description / PDF Quantity Rfq
IHA205EB

IHA205EB

Vishay / Dale

FIXED IND 500UH 2.3A 320 MOHM TH

0
IHSM4825ER821L

IHSM4825ER821L

Vishay / Dale

FIXED IND 820UH 260MA 6.04 OHM

0
IMC1210EB47NJ

IMC1210EB47NJ

Vishay / Dale

FIXED IND 47NH 483MA 300 MOHM

0
IHLP5050CEER5R6M07

IHLP5050CEER5R6M07

Vishay / Dale

FIXED IND 5.6UH 9.5A 18.19 MOHM

0
IHD1ER8R2L

IHD1ER8R2L

Vishay / Dale

FIXED IND 8.2UH 3A 28 MOHM TH

0
IMC1210SY68NK

IMC1210SY68NK

Vishay / Dale

FIXED IND 68NH 450MA 360 MOHM

0
IHLE4040DDER4R7M5A

IHLE4040DDER4R7M5A

Vishay / Dale

FIXED IND 4.7UH 9.8A 15.32 MOHM

99
IHXL1500VZEBR82M51

IHXL1500VZEBR82M51

Vishay / Dale

FIXED IND 820NH 196A 0.18 MOHM

0
IHLP5050CEERR68M06

IHLP5050CEERR68M06

Vishay / Dale

FIXED IND 680NH 28A 2.34 MOHM

0
IMC1210ER220J

IMC1210ER220J

Vishay / Dale

FIXED IND 22UH 145MA 3.7 OHM SMD

0
IHLP1616BZERR22M11

IHLP1616BZERR22M11

Vishay / Dale

FIXED IND 220NH 9A 7 MOHM SMD

0
ISC1812ER1R5K

ISC1812ER1R5K

Vishay / Dale

FIXED IND 1.5UH 418MA 400 MOHM

0
IMC1812RV680J

IMC1812RV680J

Vishay / Dale

FIXED IND 68UH 130MA 6 OHM SMD

0
IMC1812EBR10M

IMC1812EBR10M

Vishay / Dale

FIXED IND 100NH 450MA 320 MOHM

0
IMC1210EB15NM

IMC1210EB15NM

Vishay / Dale

FIXED IND 15NH 661MA 160 MOHM

0
IHSM3825ER820L

IHSM3825ER820L

Vishay / Dale

FIXED IND 82UH 560MA 1.24 OHM

0
ISC1812RQ2R7J

ISC1812RQ2R7J

Vishay / Dale

FIXED IND 2.7UH 378MA 490 MOHM

0
IHLP6767GZERR82M01

IHLP6767GZERR82M01

Vishay / Dale

FIXED IND 820NH 50A 1.29 MOHM

4088
IMC1812RV221K

IMC1812RV221K

Vishay / Dale

FIXED IND 220UH 100MA 10 OHM SMD

0
ISC1210ER39NM

ISC1210ER39NM

Vishay / Dale

FIXED IND 39NH 530MA 240 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