Bipolar transistors

Diodes

ESD protection, TVS, filtering and signal conditioning

MOSFETs

SiC MOSFETs

GaN FETs

IGBTs

Analog & Logic ICs

Automotive qualified products (AEC-Q100/Q101)

NCR321Z

250 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

NCR320Z

SOT223

 SC-73

NCR321Z

Features and benefits

  • Stabilized output current of 10 mA without external resistor

  • Stabilized output current adjustable up to 250 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 16 V

  • Digital PWM input up to 10 kHz frequency for NCR321Z

  • 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) channel type (e) Automotive qualified
NCR321Z SOT223 SC-73 6.5 x 3.5 x 1.65 16.0 250.0 11.0 1250.0 NPN Y

Package

Type number Orderable part number, (Ordering code (12NC)) Status Marking Package Package information Reflow-/Wave soldering Packing
NCR321Z NCR321ZX
(934070331115)		 Active CR321Z 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
NCR321Z NCR321ZX NCR321Z rohs rhf rhf
Quality and reliability disclaimer

Documentation (12)

File name Title Type Date
NCR320Z_NCR321Z 250 mA LED driver in SOT223 Data sheet 2019-02-04
SOT223 3D model for products with SOT223 package Design support 2019-01-22
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
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 plastic, surface-mounted package with increased heatsink; 4 leads; 2.3 mm pitch; 6.5 mm x 3.5 mm x 1.65 mm body Package information 2022-05-30
SOT223_115 SC-73; Reel pack for SMD, 7"; Q3/T4 product orientation Packing information 2024-02-15
NCR321Z_Nexperia_Product_Reliability NCR321Z Nexperia Product Reliability Quality document 2024-04-22
REFLOW_BG-BD-1 Reflow soldering profile Reflow soldering 2021-04-06
NCR321Z NCR321Z SPICE model SPICE model 2024-08-27
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
NCR321Z NCR321Z SPICE model SPICE model 2024-08-27
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
NCR321Z NCR321ZX 934070331115 Active SOT223_115 1,000 Order product

Sample

As a Nexperia customer you can order samples via our sales organization.

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. Check out the list of official distributors.

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.

Interactive datasheet

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
NCR321Z NCR321ZX 934070331115 SOT223 Order product