7 Common Types of Power Inductors

Power Induction is a passive component of power management and signal processing circuit.It mainly have functions which are Energy storage,filtering,boost-up&boost-down voltage,choke,anti-interference and so on.Based on construction,workmanship,shielding and application,the features and advantages of the 7 common types of power inductors as follow:

1、Molded Power Inductor

Molded Power Inductor adopt metal alloy magnetic powder and coil to hot-press shape,is a common selection of middle and high power circuits.

Advantages: Shielding,high current, low DCR, impact resistance,high reliability ,Strong anti-magnetic saturation resistance,Compact in size, suitable for high-density PCB.

Process branch: cold-pressed to shape(moderate cost, strong commonly used),hot-pressed to shape(higher density,performance stabler),Copper and iron co-firing(High temperature resistance and excellent high-frequency characteristics)

Application: Server,laptop,vehicle-mounted power supply, fast charging adapter, graphics card, industrial control motherboard.

2、NR Inductor

NR series belongs to a closed magnetic circuit,ultra-thin power inductor,Magnetic gel wrap-up structure makes efficiency in noise suppression and magnetic leakage.

Advantages: Strong shielding,Low buzzing ,high rated current,Ultra-thin with low side profile,small size,low high-frequency loss,excellent temperature rise characteristics.

Function: filtering,storage energy,boost-up&boost-down voltage,syntony,Suppressing ripple.

Application: Smart phone,tablets,TWS headphones,wearable devices,cameras,small IoT modules.

3、CD Inductor

CD power inductor is open type structure/semi-open type structure,Winding workmanship is mature,It is a representative of entry-level power inductors.

Advantages: Large current bearing ability,simple structure,Highly cost-effective,easy to produce,strong common use.

Functions: power circuits storage energy, power supply filter,choke flow,Suppress surge current.

Application: Home appliance control board, ordinary consumer electronic power supply, LED driver, low-end industrial control module etc,.

4、RH Shielded Power Inductor

RH shielded inductor adopts fully enclosed structure of magnetic shielding,dedicate in dealing with problem of electromagnetic compatibility(EMC)

Advantages: Strong magnetic shielding,tiny small magnetic leakage,anti-electromagnetic interference(EMI),low noise,bothway protection:It not only blocks the external magnetic field from interfering with itself, but also prevents its own magnetic field from interfering with the surrounding components.

Functions: Noise reduction,anti-interference,stable inductance,sensitive circuit protectiton.

Application: Automotive electronics,medical equipment,communication base stations,precision instruments,high-frequency power supplies.

5、Drum Core Inductor

Drum core power inductor ,since the magnetic core likes durm,so it calls drum core inductor,belongs to traditional classical structure,cost friendly,suitable for high power condition.

Advantages: Big winding space,withstand high current,good heat dissipation,wide inductor range,easy to custom,can meet special power need.

Functions: Storage energy,smooth current,Suppressing current fluctuations,choke flow,power filter.

Application: Charger,power suppler,sound equipment,motor drive,high power led.

6、Magnetic ring power inductor

Magnetic ring power inductor uses round magnetic core as carrier, enclosed magnetic circuit,high frequency and is good at anti-interference performance.

Advantages: Low magnetic leakage, good EMC performance,good high frequency,Impedance stabilization,can make efficient in suppressing common-mode / differential-mode interference.

Functions: Sensible impedance,current fluctuant prevention,filter,storage energy,current limited,signal separation,anti-interference.

Application: switching power supply,frequency converter,UPS,communication equipment,anti-interference circuits for household appliances.

7、Color ring power inductor

Color ring power inductor is miniaturized plug-in inductor,marks inductance in color ring,easy to read,belongs to small power inductor.

Advantages: Small size,marked clearly,easy to installation,good stabilization,suitable for small signal and small power circuits.

Functions: Signal filtering,high frequency coupling,choke flow,noise reduction, impedance matching.

Application: Consumer electronics,small home appliances,instrument,communication module,low frequency signal processing circuit.