20 V; 1 A NPN low VCEsat (BISS) transistor

NPN BISS transistor in a SOT23 plastic package providing ultra low VCEsat and RCEsat parameters. PNP complement: PBSS5120T.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
PBSS4120T PBSS4120T,215 934057984215 SOT23 Order product


  • Low collector-emitter saturation voltage VCEsat
  • High collector current capability IC and ICM
  • High efficiency leading to less heat generation
  • Reduced printed-circuit board requirements
  • Cost effective alternative to MOSFETs in specific applications.
  • AEC-Q101 qualified

Target applications

  • Power management
    • DC/DC conversion
    • Supply line switching
    • Battery charger
    • LCD backlighting.
  • Peripheral driver
    • Driver in low supply voltage applications (e.g. lamps and LEDs)
    • Inductive load drivers (e.g. relays, buzzers and motors).


Type numberPackage versionPackage nameSize (mm)transistor polarityPtot [max] (mW)VCEO [max] (V)IC [max] (A)ICM [max] (A)hFE [min]hFE [typ]VCEsat [max] (mV)
PBSS4120TSOT23SOT232.9 x 1.3 x 1NPN3002013350470250


Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackageOutline versionReflow-/Wave solderingPacking
( 9340 579 84215 )

SOT23Reel 7" Q3/T4

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFEFRIFRMTBF (hour)MSLMSL leadfree
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
PBSS4120T20 V; 1 A NPN low VCEsat (BISS) transistorData sheet2003-09-28
AN11076Thermal behavior of small-signal discretes on multilayer PCBsApplication note2011-07-12
PBSS4120T_Nexperia_Product_QualityPBSS4120T Nexperia Product QualityQuality document2019-05-20
PBSS4120T_Nexperia_Product_ReliabilityPBSS4120T Nexperia Product ReliabilityQuality document2019-04-29
PBSS4120TPBSS4120T SPICE modelSPICE model2019-10-16
SOT23_215Tape reel SMD; standard product orientation 12NC ending 215Packing2012-11-16
SOT23plastic, surface-mounted package; 3 terminals; 1.9 mm pitch; 2.9 mm x 1.3 mm x 1 mm bodyOutline drawing2019-01-09


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File nameTitleTypeDate
PBSS4120TPBSS4120T SPICE modelSPICE model2019-10-16

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
PBSS4120TPBSS4120T,215934057984215Reel 7" Q3/T4Order product


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