SD and SD-C Series SPA® TVS Diodes - Lightning Surge Protection

Littelfuse's TVS diodes provide up to 50% reduction in clamping voltage

Image of Littelfuse's SD and SD-C Series SPA® TVS DiodesThe SD and SD-C Series 450 W discrete unidirectional and bidirectional TVS diodes from Littelfuse are designed to protect against destructive electrostatic discharges (ESD) and lightning-induced surge currents. These fast-acting TVS diodes are ideal for replacing multilayer varistors (MLVs) in low-speed and DC applications because they can safely absorb repetitive ESD strikes at ±30 kV without performance degradation and safely dissipate up to 30 A of surge current. Their low dynamic resistance provides up to a 50% reduction in clamping voltage compared to competing technologies.

Image of SPA family of TVS Diodes Array

TVS Diodes Array

SPA® Family of TVS Diode Arrays


  • ESD: IEC61000-4-2, ±30 kV contact discharge
  • Lightning: IEC61000-4-5, 30 A (TP = 8/20 μs)
  • Low dynamic resistance
  • No inherent wear-out factor
  • SOD-323 package fits inside existing 0805 passives PCB footprints
  • AEC-Q101 qualified


  • Robust surge and enhanced ESD protection permits worry-free product implementations in world’s most challenging environments
  • Low dynamic resistance equals fast acting, low clamping protection; provides up to a 50% reduction in clamping voltage compared to competing technologies, making them ideal for protecting modern electronics
  • Robust monolithic construction, outlasts equipment that it protects; capable of handling multiple ESD or surge transients without performance degradation
  • Industry standard footprint, SOD-323 backward compatible with JEDEC 0805
  • Qualified for use in automotive electronics, ensuring maximum reliability

SD and SD-C Series SPA® TVS Diodes

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
SD05C-01FTG datasheet linkTVS DIODE 5V 18V SOD323SD05C-01FTGTVS DIODE 5V 18V SOD3233176 - Immediate
SD05C-01FTG product page link
SD05-01FTG datasheet linkTVS DIODE 5V 16.8V SOD323SD05-01FTGTVS DIODE 5V 16.8V SOD32320112 - Immediate
SD05-01FTG product page link
SD36C-01FTG datasheet linkTVS DIODE 36V 60V SOD323SD36C-01FTGTVS DIODE 36V 60V SOD32351888 - Immediate
SD36C-01FTG product page link
SD24C-01FTG datasheet linkTVS DIODE 24V 42V SOD323SD24C-01FTGTVS DIODE 24V 42V SOD32312479 - Immediate
SD24C-01FTG product page link
SD36-01FTG datasheet linkTVS DIODE 36V 62V SOD323SD36-01FTGTVS DIODE 36V 62V SOD32385008 - Immediate
SD36-01FTG product page link
SD12-01FTG datasheet linkTVS DIODE 12V 22.5V SOD323SD12-01FTGTVS DIODE 12V 22.5V SOD3234660 - Immediate
SD12-01FTG product page link
SD15-01FTG datasheet linkTVS DIODE 15V 30V SOD323SD15-01FTGTVS DIODE 15V 30V SOD32318710 - Immediate
SD15-01FTG product page link
SD24-01FTG datasheet linkTVS DIODE 24V 42V SOD323SD24-01FTGTVS DIODE 24V 42V SOD32353771 - Immediate
SD24-01FTG product page link
SD12C-01FTG datasheet linkTVS DIODE 12V 23V SOD323SD12C-01FTGTVS DIODE 12V 23V SOD3236393 - Immediate
SD12C-01FTG product page link
SD15C-01FTG datasheet linkTVS DIODE 15V 31V SOD323SD15C-01FTGTVS DIODE 15V 31V SOD323361 - Immediate
SD15C-01FTG product page link
Published: 2014-12-01