BSR41; BSR43

NPN medium power transistors

NPN medium power transistor in a SOT89 plastic package. PNP complements: BSR30; BSR31 and BSR33.


  • High current (max. 1 A)
  • Low voltage (max. 80 V).

Target applications

  • Thick and thin-film circuits
  • Telephony and general industrial applications.


Type numberPackage versionPackage nameSize (mm)Ptot [max] (mW)PolarityVCEO [max] (V)IC [max] (mA)hFE [min]hFE [max]Complement
BSR41SOT89SOT894.5 x 2.5 x 1.51350NPN601000100300BSR31
BSR43SOT89SOT894.5 x 2.5 x 1.51350NPN801000100300BSR33


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))

SOT89Reel 11¼" Q1/T1 in LargePackActiveAR2BSR41F
( 9334 180 80135 )
Reel 7" Q1/T1ActiveAR2BSR41,115
( 9334 180 80115 )

SOT89Reel 7" Q1/T1ActiveAR4BSR43,115
( 9334 181 00115 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
BSR41BSR41FBSR41Always Pb-free95.00.442.27E911
BSR41BSR41,115BSR41week 28, 200395.00.442.27E911
BSR43BSR43,115BSR43week 28, 200395.00.442.27E911
Quality and reliability disclaimer

Documentation (8)

File nameTitleTypeDate
BSR40_41_42_43NPN medium power transistorsData sheet2004-12-12
LSYMTRALetter Symbols - Transistors; GeneralDesign support1999-05-06
nexperia_selection_guide_2019_201901Selection guide 2019. Discretes, Logic and MOSFETsSelection guide2018-12-12
SOT89plastic, surface-mounted package; 3 leads; 1.5 mm pitch; 4.5 mm x 2.5 mm x 1.5 mm bodyOutline drawing2017-01-30
SOT89_135Tape reel SMD; standard product orientation 12NC ending 135Packing2012-11-28
SOT89_146Reel pack, SMD, 7" T3 Turned 270 degree product orientation Ordering code (12NC) ending 146Packing2014-03-04
SOT89_147SOT89 Reel pack, SMD, 7" T4 Turned 90 degree product orientation Ordering code (12NC) ending 147Packing2014-03-04
SOT89_115Reel pack for SMD, 7"; Q2/T3 product orientationPacking2019-10-11


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Ordering, pricing & availability


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