Fixed Inductors

Part Number	Description / PDF	Quantity
BDHEDH201210R10NCA Chilisin Electronics	FIXED IND 100NH 6A 130 MOHM SMD	29000
BSCH00160808R10J00 Chilisin Electronics	FIXED IND 100NH 300MA 1.2OHM SMD	6300
BKPB002520101R0MA2 Chilisin Electronics	FIXED IND 1UH 1.5A 60MOHM SMD	6000
BSCH00160808R12J00 Chilisin Electronics	FIXED IND 120NH 300MA 1.3OHM SMD	7922
AWVS00606045680M00 Chilisin Electronics	FIXED IND 68UH 1A 330 MOHM SMD	1930
BSCQ000603030N6B00 Chilisin Electronics	FIXED IND 0.6NH 900MA 60MOHM SMD	29552
BMRA00040420100MA1 Chilisin Electronics	FIXED IND 10UH 1.6A 258 MOHM SMD	3980
APSC000303162R2T00 Chilisin Electronics	FIXED IND 2.2UH 1.6A 94MOHM SMD	1975
BSCH000603035N6S00 Chilisin Electronics	FIXED IND 5.6NH 260MA 360 MOHM	29892
BWVS008080403R3M00 Chilisin Electronics	FIXED IND 3.3UH 6A 15 MOHM SMD	1794
BWVF002520124R7M00 Chilisin Electronics	FIXED IND 4.7UH 1.1A 190 MOHM	3968
BPSC00131380330M00 Chilisin Electronics	FIXED IND 33UH 64.8MOHM SMD	974
BWCS001207076N2H00 Chilisin Electronics	FIXED IND 6.2NH 760MA 83MOHM SMD	7920
BMRA00060630R47MA1 Chilisin Electronics	FIXED IND 470NH 16.5A 5.5 MOHM	1970
BMRF00060630100MA1 Chilisin Electronics	FIXED IND 10UH 4A 68 MOHM SMD	1950
BSCH000603031N2S00 Chilisin Electronics	FIXED IND 1.2NH 450MA 120 MOHM	30000
BWLS00161109R10J00 Chilisin Electronics	FIXED IND 100NH 1.5A 130 MOHM	7959
BSPQ000603047N5H00 Chilisin Electronics	THIN FILM RF INDUCTOR,HIGH Q	0
BSCH0016080856NJ00 Chilisin Electronics	FIXED IND 56NH 400MA 750MOHM SMD	2782
BWVS004040186R8M00 Chilisin Electronics	FIXED IND 6.8UH 1.5A 110 MOHM	1584

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