Bourns SRN4018TA Semi-Shielded Power Inductors

Bourns SRN4018TA Semi-Shielded Power Inductors provide effective magnetic shielding with lower radiation compared to non-shielded inductors. These inductors offer a reduced cost to comparably-sized conventional ferrite shield inductors. The AEC-Q200 qualified SRN4018TA components are primarily designed for automotive electronics applications. Typical automotive application areas for these inductors are driver assistant devices, information/entertainment systems, lighting, and other applications including DC/DC converters and power supplies. Although primarily designed for automotive applications, Bourns SRN4018TA Inductors are also well suited for consumer, industrial, medical, telecom, and other applications where higher inductor reliability is required.


  • Semi-shielded construction
  • 1µH to 150µH inductance range
  • Up to 3.2A rated current
  • AEC-Q200 qualified
  • Halogen-free and RoHS compliant


  • Automotive systems
    • Driver assistant
    • Infotainment
    • Lighting
  • DC/DC converters
  • Power supplies
  • Digital video cameras
  • HDDs
  • Smartphones
  • Televisions, LCD displays


  • 1.0µH to 150µH inductance range at 100kHz/1V
  • ±20% inductance tolerance
  • 10 Q minimum at 100kHz
  • 4MHz to 145MHz typical SRF
  • 0.027Ω to 1.97Ω DCR (±20%)
  • -40°C to +125°C temperature range
  • Materials
    • Ferrite core
    • Enameled copper wire
    • SN terminal finish
    • Magnetic epoxy resin coating
Published: 2016-11-16 | Updated: 2022-03-11