Fixed Inductors

Part Number	Description / PDF	Quantity
BSCH0006030318NJ00 Chilisin Electronics	FIXED IND 18NH 170MA 810MOHM SMD	22492
BDHE002016101R0MQ1 Chilisin Electronics	FIXED IND 1UH 3.1A 65 MOHM SMD	4392
BWLS0016110947NJ00 Chilisin Electronics	FIXED IND 47NH 1.5A 75MOHM SM	7605
BWCS0012070710NG00 Chilisin Electronics	FIXED IND 10NH 480MA 200MOHM SMD	6077
BMCA00060630100MD1 Chilisin Electronics	FIXED IND 10UH 3A 102 MOHM SMD	2000
BWCS00231715R47G00 Chilisin Electronics	FIXED IND 470NH 250MA 1.76 OHM	3990
BWCS0016100812NG00 Chilisin Electronics	FIXED IND 12NH 700MA 130MOHM SMD	8000
BPSC001011406R8M00 Chilisin Electronics	FIXED IND 6.8UH 31MOHM SMD	1400
BSCH001005052N4SCP Chilisin Electronics	FIXED IND 2.4NH 400MA 150 MOHM	17353
BSCH0006030310NJ00 Chilisin Electronics	FIXED IND 10NH 220MA 510MOHM SMD	15000
BWCS001207075N6H00 Chilisin Electronics	FIXED IND 5.6NH 760MA 83MOHM SMD	7835
BSCH001005051N2SCP Chilisin Electronics	FIXED IND 1.2NH 400MA 90MOHM SMD	18846
BWVF002520121R5M00 Chilisin Electronics	FIXED IND 1.5UH 2.3A 68 MOHM SMD	3925
BWVS00404018470M00 Chilisin Electronics	FIXED IND 47UH 560MA 720 MOHM	1373
BSCH001608086N8J00 Chilisin Electronics	FIXED IND 6.8NH 600MA 220 MOHM	3355
BWCS00231715R15G00 Chilisin Electronics	FIXED IND 150NH 400MA 560 MOHM	3900
BWVH002520122R2MH1 Chilisin Electronics	FIXED IND 2.2UH 2A 99 MOHM SMD	3055
BWCS0012070715NG00 Chilisin Electronics	FIXED IND 15NH 560MA 170MOHM SMD	3989
BPSC00101140220M00 Chilisin Electronics	FIXED IND 22UH 80MOHM SMD	1965
BSPQ0006030422NH00 Chilisin Electronics	THIN FILM RF INDUCTOR,HIGH Q	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

Type	Functional Characteristics	Application Examples
Wirewound Inductors	High precision, high current handling, low resistance	Power supplies, DC-DC converters
Chip Inductors	Compact SMD package, stable performance at high frequencies	Mobile devices, RF circuits
Ferrite Bead Inductors	Effective high-frequency noise suppression	EMI filtering in digital circuits
Thin-Film Inductors	Ultra-compact, high Q-factor, tight tolerance	5G 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

Parameter	Description	Importance
Inductance (L)	Measured in henrys (H), determines energy storage capacity	Defines filtering/energy storage performance
Rated Current (I_rated)	Maximum DC current before saturation	Prevents core saturation and failure
DC Resistance (DCR)	Resistance of coil windings	Affects efficiency and thermal performance
Self-Resonant Frequency (SRF)	Frequency where inductor behaves as capacitor	Limits effective operating frequency range
Q Factor	Quality factor indicating efficiency	Higher 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

Manufacturer	Representative Product	Key Features
Murata	LQH3NPN100M	10 H, 1.2A, 1.8 1.4mm chip inductor
TDK	MLZ2012A100T	100MHz SRF, 1.0 1.25mm for RF circuits
Vishay	IHLP2525CZER1R0M	1 H, 12A, composite construction
Coilcraft	0402DC-103J	10 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