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Wire Wound SMD Power Inductor for Automotive—ASWPA Series

Content

Overview

ASWPA series wire wound power inductors for automotive employ magnetic resin shielded structure. Compared with conventional inductors the buzz noise is reduced; compared with open magnetic circuit inductors the shock resistance is enhanced, and AC impedance is decreased dramatically, hence the power source circuit work efficiency is raised. The reliability is also promoted via material optimization and structure improve. This product is suitable to be used in automotive infotainment system, LED lighting, and air bag restraint system. ASWPA8050S8R2MT has been listed in the NXP TDF8534 chip reference design. The structure of the product illustrated as below:

Background

With the trend of intelligent and multifunctional automotive, concerns about infotainment and comfort system increasingly grow, such as car multimedia and assist navigation. To meet the automotive application requirements, ASWPA series wire wound power inductors with improved reliability and low RDC are introduced.

Features

  • AEC-Q200 verified
  • Magnetic resin shielded construction reduces buzz noise to ultra-low level
  • Closed magnetic circuit design reduces leakage flux and EMI

Applications

  • Infotainment system for automotive
  • LED lightning for automotive
  • Air bag restraint system
  • DC-DC conversion except for vehicle power system

Dimensions

Part Number

Electrical Characteristics

 

ASWPA4035/6055/8050S TYPE
Part Number
Inductance
@100kHz,1V
DC Resistance
 
Min.
Self-resonant
Frequency
Saturation Current
*3
Heat Rating Current
*4
-
-
Max.
Typ.
 
Min.
Max.
Typ.
 
Max.
Typ.
 
Units
μH
Ω
MHz
A
A
Symbol
L
DCR
S.R.F
Isat
Irms
ASWPA4035S8R2MT
8.2±20%
0.108
0.090
25.6
2.10
2.40
1.80
2.10
ASWPA6055S8R2MT
8.2±20%
0.049
0.041
20.1
3.90
4.30
2.90
3.40
ASWPA8050S8R2MT
8.2±20%
0.035
0.029
19.4
5.00
5.80
3.40
3.80
Note: 1: Rated current: Isat (max.) or Irms (max.), whichever is smaller;
2: Saturation Current: Max. Value, DC current at which the inductance drops less than 20% from its value without current; Typ. Value, DC current at which the inductance drops 30% from its value without current;
3: Irms: DC current that causes the temperature rise (ΔT) from 20°Cambient.For Max. Value, ΔT40; For Typ. Value, ΔT is approximate 40.
 The part temperature (ambient + temp. rise) should not exceed 125 °C under worst case operating conditions. Circuit design, component placement, PCB trace size and thickness, airflow and other cooling provisions all affect the part temperature. Part temperature should be verified in the end application