150 mA LED driver in SOT223

LED driver consisting of a resistor-equipped NPN transistor with two diodes on one chip in a medium power SOT223 (SC-73) plastic package.

Table 1. Product overview
Type number Package
Nexperia JEITA





Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NCR421Z NCR421ZX 934070333115 SOT223 Order product

Features and benefits

  • Stabilized output current of 10 mA without external resistor

  • Stabilized output current adjustable up to 150 mA when an external resistor is used

  • High current accuracy at supply voltage variation

  • Low voltage overhead of 1.4 V

  • Reduces component count and board space

  • High power dissipation of 1250 mW

  • Supply voltage up to 40 V

  • Digital PWM input up to 10 kHz frequency for NCR421Z

  • AEC-Q101 qualified


  • Constant LED driver

  • Generic constant current source

  • Automotive applications (for example: interior lighting, dash board, instrumentation, number plate light)

  • Increase stabilized output current by paralleling drivers


Type numberPackage versionPackage nameSize (mm)VSUP [max] (V)Limiting IO with external resistor [max] (mA)IO [max] (mA)Ptot [max] (mW)Polarity
NCR421ZSOT223SC-736.5 x 3.5 x 1.6540200231250NPN

PCB Symbol, Footprint and 3D Model

Model NameDescription


Type numberOrderable part number, (Ordering code (12NC))StatusMarkingPackagePackage informationReflow-/Wave solderingPacking
( 9340 703 33115 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicator
Quality and reliability disclaimer

Documentation (9)

File nameTitleTypeDate
NCR420Z_NCR421Z150 mA LED driver in SOT223Data sheet2019-02-04
Nexperia_document_factsheet_LED_Driver_2020Constant current LED DriversLeaflet2020-08-18
Nexperia_document_factsheet_LED_Driver_2020_CHNLED Driver Factsheet CHNLeaflet2020-08-20
NCR421Z_Nexperia_Product_QualityNCR421Z Nexperia Product QualityQuality document2019-05-20
NCR421Z_Nexperia_Product_ReliabilityNCR421Z Nexperia Product ReliabilityQuality document2023-04-04
NCR421ZNCR421Z SPICE modelSPICE model2023-11-17
SOT223_115Tape reel SMD; standard product orientation 12NC ending 115Packing information2020-04-27
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
NCR421ZNCR421Z SPICE modelSPICE model2023-11-17

PCB Symbol, Footprint and 3D Model

Model NameDescription

Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingPacking quantityBuy online
NCR421ZNCR421ZX934070333115SOT223_115- 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.

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.