component

NCR320ZX

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by Ray

Nexperia LED Drivers, SOT-223-4. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

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PCB Footprint

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Datasheet

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Contents

README

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NCR320ZX

Nexperia · LED Drivers · SOT-223-4

NCR320ZX from Nexperia, in a SOT-223-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VEN input Enable voltage input. Turning on the internal NPN driver by biasing the base network. Absolute maximum VEN = 25 V for NCR320Z. Typical enable current IEN = 1.2 mA at VEN = 12 V. Internal bias resistor RB ≈ 10 kΩ.
2 REXT passive External current-setting resistor connection. Tie an external resistor (Rext) between REXT and GND (in series with the internal 95 Ω emitter resistor) to program the stabilized output current above the built-in 10 mA baseline, up to a maximum of 250 mA at Rext = 3 Ω. Leave open for the default ~10 mA output.
3 GND power_in Ground / common return for the enable network and the internal emitter resistor. Reference for VEN and REXT.
4 IOUT output Regulated (constant-current) output. Connects to the collector of the internal NPN transistor; typically wired between the LED cathode and the load supply (up to Vout,max = 16 V). Delivers stabilized Iout = 10 mA nominal (up to 250 mA with external Rext). Requires Vout ≥ 1.4 V of headroom (Vout,min = VCC − VLED).

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-223-4
Category LED Drivers
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • NCR320ZX
  • NCR321Z

CAD (KiCad official)

  • Symbol: NCR320ZX
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Nexperia datasheet (18 pp, sha256 e7f8c945f0cc83cc, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF