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NPN high-voltage transistors

NPN high-voltage transistor in a SOT323 plastic package.

PNP complement: PMST5401.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
PMST5551 PMST5551,115 934051560115 SOT323 Order product

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]
PMST5551SOT323SC-702 x 1.25 x 0.95NPN20016030080250


Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
( 9340 515 60115 )
Reel 7” Q1/T1 or Q2/T3

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFMSLMSL leadfree
Quality and reliability disclaimer

Documentation (7)

File nameTitleTypeDate
PMST5550_5551NPN high-voltage transistorsData sheet1999-04-28
LSYMTRALetter Symbols - Transistors; GeneralDesign support1999-05-06
PMST5551_Nexperia_Product_QualityPMST5551 Nexperia Product QualityQuality document2019-05-20
PMST5551_Nexperia_Product_ReliabilityPMST5551 Nexperia Product ReliabilityQuality document2022-03-21
PMST5551PMST5551 SPICE modelSPICE model2022-07-12
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08


If you are in need of design/technical support, let us know and fill in the answer form, we'll get back to you shortly.


File nameTitleTypeDate
LSYMTRALetter Symbols - Transistors; GeneralDesign support1999-05-06
PMST5551PMST5551 SPICE modelSPICE model2022-07-12

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
PMST5551PMST5551,115934051560115Reel 7” Q1/T1 or Q2/T3- Order product


As a Nexperia customer you can order samples via our sales organization or directly via our Online Sample Store: https://extranet.nexperia.com.

Sample orders normally take 2-4 days for delivery.

If you do not have a direct account with Nexperia our network of global and regional distributors is available and equipped to support you with Nexperia samples.