Littelfuse Px0S3N-A Automotive Grade SIDACtor® Thyristors

Littelfuse Px0S3N-A Automotive Grade SIDACtor® Thyristors are AEC-Q101 qualified and feature a compact, surface-mount DO-214AB package. This high surge current series protects AC power lines from overvoltage transients in hostile environments. The thyristors are rated 3000A 8/20μs, enabling equipment compliance with regulatory and user surge requirements. Additional features include low voltage overshoot, low on-state voltage, and fast response. Littelfuse Px0S3N-A Automotive Grade SIDACtor Thyristors are designed to protect exposed interfaces in industrial and internally commutated thyristor (ICT) applications, such as RS-485 data interfaces or AC and DC power supplies.


  • High reliability application and automotive-grade AEC-Q101 qualified
  • High surge rating 8/20μs 3000A protection
  • High surge SIDACtor designed in compact, surface-mount DO-214AB package
  • Low voltage overshoot
  • Low on-state voltage
  • Fails short circuit when surged in excess of ratings
  • Component properties do not degrade after multiple surge events within their limits
  • Fast response in microseconds
  • -65°C to +125°C operating junction temperature range
  • Halogen free and RoHS compliant
  • Pb-free E3 means 2nd level interconnect is lead free and the terminal finish material is tin (Sn) (IPC/JEDEC J-STD609A.01)
  • Applicable global standards
    • TIA-968-A
    • TIA-968-B
    • ITU K.20/21 Enhanced Level
    • ITU K.20/21 Basic Level
    • GR 1089 Inter-building
    • GR 1089 Intra-building
    • IEC 61000-4-5, 2nd edition
    • YD/T 1082
    • YD/T 993
    • YD/T 950


  • Automotive
  • Industrial
  • ICT

Schematic Symbol

Schematic - Littelfuse Px0S3N-A Automotive Grade SIDACtor® Thyristors
Published: 2023-08-28 | Updated: 2023-09-12