Single high-voltage switching diode

Single high-voltage switching diode, fabricated in planar technology, and encapsulated in a SOD523 (SC-79) ultra small Surface-Mounted Device (SMD) plastic package.


  • High switching speed: trr ≤ 50 ns
  • High reverse voltage: VR ≤ 300 V
  • Repetitive peak forward current: IFRM ≤ 1 A
  • Ultra small SMD plastic package
  • AEC-Q101 qualified

Target applications

  • High-speed switching
  • High-voltage switching


Type numberPackage versionPackage nameSize (mm)VR [max] (V)IFSM [max] (A)VF [max] (mV)IR [max] (nA)IFRM (mA)Configurationtrr [max] (ns)IF [max] (mA)Cd [max] (pF)
BAS521SOD523SC-791.2 x 0.8 x 0.63004.51100@IF=100mA150@VR=250V1000single502505


Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOD523Reel 7" Q1/T1ActiveL4BAS521,115
( 9340 577 66115 )
Reel 7" Q1/T1 Pitch 2mmActiveL4BAS521,315
( 9340 577 66315 )
Reel 11¼" Q1/T1 in LargePackActiveL4BAS521,135
( 9340 577 66135 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRIFRMTBF (hour)MSLMSL leadfree
BAS521BAS521,115BAS521Always Pb-free409.01.95.26E811
BAS521BAS521,315BAS521Always Pb-free409.01.95.26E811
BAS521BAS521,135BAS521Always Pb-free409.01.95.26E811
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
BAS521Single high-voltage switching diodeData sheet2018-06-29
BAS521_Nexperia_Product_ReliabilityBAS521 Nexperia Product ReliabilityQuality document2017-05-23
BAS521BAS521 SPICE modelSPICE model2014-01-21
SOD523_135Tape reel; standard product orientation 12NC ending 135Packing2012-11-07
SOD523_315Tape reel; standard product orientation 12NC ending 315Packing2012-11-07
SOD523_115Reel pack, SMD, 7"; Q1/T1 standard product orientation; Orderable part number ending ,115 or X; Ordering code (12NC) ending 115Packing2018-07-23
SOD523plastic, surface-mounted package; 2 leads; 1.2 mm x 0.8 mm x 0.6 mm bodyOutline drawing2019-01-25


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File nameTitleTypeDate
BAS521BAS521 SPICE modelSPICE model2014-01-21

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy from distributors
BAS521BAS521,115934057766115Reel 7" Q1/T1Buy online
BAS521BAS521,315934057766315Reel 7" Q1/T1 Pitch 2mmBuy online
BAS521BAS521,135934057766135Reel 11¼" Q1/T1 in LargePackBuy online


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