PMST5550; PMST5551

NPN high-voltage transistors

NPN high-voltage transistor in a SOT323 plastic package.

PNP complement: PMST5401.

Features and benefits

  • Low current (max. 300 mA)
  • High voltage (max. 160 V).
  • AEC-Q101 qualified


  • Switching and amplification in high voltage applications such as telephony.


Type numberPackage versionPackage nameSize (mm)PolarityPtot (mW)VCEO [max] (V)IC [max] (mA)hFE [min]hFE [max]
PMST5550SOT323SC-702 x 1.25 x 0.95NPN20014030060250
PMST5551SOT323SC-702 x 1.25 x 0.95NPN20016030080250


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
Reel 13” or 11 ¼” Q1/T1 Active%1FPMST5550,135
( 9340 308 60135 )
Reel 7” Q1/T1 or Q2/T3Active%1FPMST5550,115
( 9340 308 60115 )
Reel 7” Q1/T1 or Q2/T3Active%G3PMST5551,115
( 9340 515 60115 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
PMST5550PMST5550,135PMST5550week 30, 200311
PMST5550PMST5550,115PMST5550week 30, 200311
PMST5551PMST5551,115PMST5551week 30, 200311
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
PMST5550_5551NPN high-voltage transistorsData sheet1999-04-28
LSYMTRALetter Symbols - Transistors; GeneralDesign support1999-05-06
Nexperia_Selection_guide_2020Nexperia Selection Guide 2020Selection guide2020-01-31
SOT323plastic, surface-mounted package; 3 leads; 1.3 mm pitch; 2 mm x 1.25 mm x 0.95 mm bodyPackage information2020-04-21
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08


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Ordering, pricing & availability


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