Orderable parts
| Type number | Orderable part number | Ordering code (12NC) | Package | Buy from distributors |
|---|---|---|---|---|
| NCR321Z | NCR321ZX | 934070331115 | SOT223 | Order product |
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Click here for more informationNCR321Z
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.
| 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 |
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 |
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Documentation (11)
| File name | Title | Type | Date |
|---|---|---|---|
| NCR320Z_NCR321Z | 250 mA LED driver in SOT223 | Data sheet | 2019-02-04 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| 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 | 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 | 2025-05-28 |
| REFLOW_BG-BD-1 | Reflow soldering profile | Reflow soldering | 2021-04-06 |
| NCR321Z | NCR321Z SPICE model | SPICE model | 2025-07-09 |
| 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.
Longevity
The Nexperia Longevity Program is aimed to provide our customers information from time to time about the expected time that our products can be ordered. The NLP is reviewed and updated regularly by our Executive Management Team. View our longevity program here.
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 |
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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.