Inductor Kits

Part Number	Description / PDF	Quantity
744356 Würth Elektronik Midcom	KIT INDUCTOR HC/HCA LARGE SIZES	1
744357 Würth Elektronik Midcom	SMD FLAT WIRE HIGH CURRENT INDUC	0
7443736 Würth Elektronik Midcom	SMD LOW PROFILE HIGH CURRENT MOL	0
744741 Würth Elektronik Midcom	RADIAL LEADED WIRE INDUCTORS WE-	9
744028 Würth Elektronik Midcom	KIT INDUCTOR TPC SMALL SIZES	1
744354 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-HCI - SMA	1
784775 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-PD2A - 78	0
701100 VER 2.0 Würth Elektronik Midcom	FLAT-I DESIGN KIT	8
744300 Würth Elektronik Midcom	SMD HIGH CURRENT FLAT WIRE INDUC	0
744775 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-PD2 - 785	0
7440894 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-SPC	1
744784A Würth Elektronik Midcom	MULTILAYER RF IND KIT 0402	40
7443833 Würth Elektronik Midcom	WE-MAPI DESIGN KIT	0
7443831 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-MAPI - 16	2
744770 Würth Elektronik Midcom	KIT INDUCTOR PD SERIES LARGE	1
744762 Würth Elektronik Midcom	SMD WIRE WOUND CERAMIC INDUCTORS	2
784773 Würth Elektronik Midcom	SMD POWER INDUCTORS WE-PD2A - 45	2
744070 Würth Elektronik Midcom	SMD TINY POWER INDUCTORS WE-TPC	0
999001 VER 3.0 Würth Elektronik Midcom	WE-SDP DESIGN KIT	0
744043 Würth Elektronik Midcom	KIT INDUCTOR TPC MED SIZES	1

Inductor Kits

1. Overview

KitsInductor Kits are modular assemblies containing inductors with varying specifications, designed for rapid prototyping, educational purposes, and industrial applications. Inductors are passive electronic components that store energy in magnetic fields and resist current changes. They are critical in power management, signal filtering, and electromagnetic interference (EMI) suppression. Modern electronics rely on inductors for efficient voltage regulation in devices ranging from smartphones to industrial machinery.

2. Major Types & Functional Classification

Type	Functional Features	Application Examples
Fixed Inductors	Stable inductance value, low tolerance	Power supplies, DC-DC converters
Variable Inductors	Adjustable inductance via movable core	Tunable RF circuits, radio frequency matching
Power Inductors	High current handling, low DCR	Switching regulators, motor drives
RF Inductors	High Q-factor, low parasitic capacitance	5G base stations, wireless charging systems
Common Mode Chokes	Differential-mode noise suppression	Network interfaces, power line filters

3. Structure & Composition

Typical KitsInductor Kits consist of: - Coil Windings: Copper or aluminum wire wound around a core - Magnetic Core: Ferrite, powdered iron, or toroidal materials - Encapsulation: Molded plastic or epoxy coating - Termination: SMD pads or through-hole leads - Identification Markings: Inductance value codes and ratings

4. Key Technical Specifications

Parameter	Description	Importance
Inductance (L)	Ranges from nH to mH	Determines energy storage capacity
Current Rating (IDC)	100mA-20A	Prevents saturation in power circuits
DC Resistance (DCR)	10m -5	Affects efficiency and thermal performance
Self-Resonant Frequency (SRF)	1MHz-200MHz	Defines operational frequency limits
Q Factor	20-300	Indicates quality of energy storage at RF

5. Application Fields

Consumer Electronics: Mobile phone charging circuits, laptop VRMs
Industrial: Variable frequency drives, PLC power modules
Automotive: ECU voltage regulators, EV battery management
Telecommunications: 5G NR filters, optical transceiver bias circuits

6. Leading Manufacturers & Products

Manufacturer	Key Product	Features
TDK Corporation	CDRH3D28	1.5 H power inductor, 8.1A rating
Coilcraft	0402CS Series	100MHz SRF, 0.1 H-10 H range
Vishay Dale	IHLP-2525CZ	Compliant with AEC-Q200 automotive standard

7. Selection Recommendations

Key selection criteria include: - Matching inductance value to switching frequency (e.g., 10 H for 100kHz buck converters) - Current rating exceeding peak circuit requirements by 20% - Operating temperature range (-55 C to +155 C for industrial) - Package size constraints (0402 to 1812 SMD for portables) - Cost optimization for mass production

Example: For a 2A smartphone PMIC, select 2.2 H 0603 inductor with <200m DCR.

8. Industry Trends

Future developments include: - Miniaturization: 0201-inch SMD inductors for wearable devices - High-frequency operation: SRF >10GHz for mmWave applications - Integrated solutions: Inductor-IC co-packaging for VRMs - Advanced materials: Amorphous nanocrystalline cores for EVs - Environmental compliance: Halogen-free encapsulation materials