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NCR421Z

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

NCR420Z

SOT223

SC-73

NCR421Z

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

Applications

  • 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

Parametrics

Type number Package version Package name Size (mm) VSUP [max] (V) Limiting IO with external resistor [max] (mA) IO [max] (mA) Ptot [max] (mW) Polarity Automotive qualified
NCR421Z SOT223 SC-73 6.5 x 3.5 x 1.65 40 200 23 1250 NPN Y

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
NCR421Z NCR421ZX
(934070333115)
Active CR421Z SOT223
SC-73
(SOT223)
SOT223 REFLOW_BG-BD-1
WAVE_BG-BD-1
SOT223_115

Environmental information

Type number Orderable part number Chemical content RoHS RHF-indicator
NCR421Z NCR421ZX NCR421Z rohs rhf rhf
Quality and reliability disclaimer

Documentation (15)

File name Title Type Date
NCR420Z_NCR421Z 150 mA LED driver in SOT223 Data sheet 2019-02-04
Nexperia_document_factsheet_LED_Driver_2020 Constant current LED Drivers Leaflet 2020-08-18
Nexperia_document_factsheet_LED_Driver_2020_CHN LED Driver Factsheet CHN Leaflet 2020-08-20
NCR421Z_Nexperia_Product_Quality NCR421Z Nexperia Product Quality Quality document 2019-05-20
NCR421Z_Nexperia_Product_Reliability NCR421Z Nexperia Product Reliability Quality document 2023-04-04
NCR421Z NCR421Z SPICE model SPICE model 2024-02-06
SOT223 3D model for products with SOT223 package Design support 2019-01-22
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SC-73_SOT223_mk plastic, surface-mounted package with increased heatsink; 4 leads; 4.6 mm pitch; 6.5 mm x 3.5 mm x 1.65 mm body Marcom graphics 2017-01-28
SOT223_115 SC-73; Reel pack for SMD, 7"; Q3/T4 product orientation Packing information 2024-02-15
SOT223_135 SC-73; Reel pack for SMD, 13"; Q3/T4 product orientation Packing information 2024-02-15
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
WAVE_BG-BD-1 Wave soldering profile Wave soldering 2021-09-08

Support

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.

Models

File name Title Type Date
NCR421Z NCR421Z SPICE model SPICE model 2024-02-06
SOT223 3D model for products with SOT223 package Design support 2019-01-22

Ordering, pricing & availability

Type number Orderable part number Ordering code (12NC) Status Packing Packing Quantity Buy online
NCR421Z NCR421ZX 934070333115 Active SOT223_115 1,000 Order product

Sample

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.

Orderable parts

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