Fixed Inductors

Part Number	Description / PDF	Quantity
36501JR16JTDG TE Connectivity AMP Connectors	FIXED INDUCTOR 160NH SMD	0
36502A39NJTDG TE Connectivity AMP Connectors	FIXED IND 39NH 500MA 290 MOHM	2190
MSC60822KT TE Connectivity AMP Connectors	FIXED IND 8.2MH 26MA 119 OHM TH	0
36501J30NGTDG TE Connectivity AMP Connectors	FIXED IND 30NH 600MA 150 MOHM	0
36502A1R2GTDG TE Connectivity AMP Connectors	FIXED IND 1.2UH 170MA 2.5 OHM	0
36502C2R2JTDG TE Connectivity AMP Connectors	FIXED IND 2.2UH 280MA 2.8 OHM	2204
36502A36NJTDG TE Connectivity AMP Connectors	FIXED IND 36NH 500MA 270 MOHM	0
36541E3N6JTDG TE Connectivity AMP Connectors	FIXED IND 3.6NH 1.7A 45 MOHM	0
SC10102KT TE Connectivity AMP Connectors	FIXED IND 1MH 76MA 40 OHM TH	0
3622C101KT TE Connectivity AMP Connectors	FIXED IND 100UH 1.2A 330 MOHM	0
36541E2N4JTDG TE Connectivity AMP Connectors	FIXED IND 2.4NH 2A 42 MOHM SMD	0
SC10681KT TE Connectivity AMP Connectors	FIXED IND 680UH 84MA 33 OHM TH	0
1624113-2 TE Connectivity AMP Connectors	FIXED IND 22NH 500MA 220 MOHM	0
36501E4N3JTDG TE Connectivity AMP Connectors	FIXED IND 4.3NH 700MA 91 MOHM	3950
SC101R5KT TE Connectivity AMP Connectors	FIXED IND 1.5UH 625MA 600 MOHM	0
3631B100MT TE Connectivity AMP Connectors	FIXED IND 10UH 3.3A 35 MOHM SMD	0
36501J82NGTDG TE Connectivity AMP Connectors	FIXED IND 82NH 400MA 540 MOHM	0
3639D331N TE Connectivity AMP Connectors	FIXED IND 330UH 550MA 1 OHM SMD	0
MGDQ5-00005-P TE Connectivity AMP Connectors	FIXED INDUCTOR	0
SC10R22KT TE Connectivity AMP Connectors	FIXED IND 220NH 1.77A 75 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

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