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ZR431F01TA

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Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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ZR431F01TA

Diodes Incorporated · Voltage Reference · SOT-23

ZR431F01TA from Diodes Incorporated, in a SOT-23. 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 VREF input Reference / feedback input. Internally compared to the 2.5 V bandgap reference; tie to the divider tap between the output and GND to program VZ = (1 + R1/R2) x VREF. Input current ~0.12 uA typ, 1.0 uA max.
2 VZ power_in Cathode / regulated output terminal. Sinks 0.05 mA to 100 mA in operation (150 mA absolute max) and clamps to the programmed VZ set by the VREF divider. Max cathode voltage 20 V.
3 GND power_in Anode / device ground return. All voltages in the datasheet are referenced to this pin.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • ZR431F01TAF005-7
  • ZR431F01TAF005TA
  • ZR431F01TAF01-7
  • ZR431F01TA
  • ZR431F01TAFTA
  • ZR431F01TAGTA

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Reference Voltage (1% tolerance, SOT23) VREF 2.475 2.5 2.525 V IL = 10mA (Figure 1), VZ = VREF 2
Deviation of Reference Input Voltage over Temperature VDEV 10 30 mV IL = 10mA, VZ = VREF, TA = Full Range (Figure 1) 2
Ratio of Change in Reference Voltage to Change in Cathode Voltage (VZ from VREF to 10V) ΔVREF/ΔVZ -1.85 -2.7 mV/V VZ from VREF to 10V, IZ = 10mA (Figure 2) 2
Ratio of Change in Reference Voltage to Change in Cathode Voltage (VZ from 10V to 20V) ΔVREF/ΔVZ -1 -2 mV/V VZ from 10V to 20V, IZ = 10mA (Figure 2) 2
Reference Input Current IREF 0.12 1 µA R1 = 10k, R2 = O/C, IL = 10mA (Figure 2) 2
Deviation of Reference Input Current over Temperature ΔIREF 0.04 0.2 µA R1 = 10k, R2 = O/C, IL = 10mA, TA = Full Range (Figure 2) 2
Minimum Cathode Current for Regulation IZ(MIN) 35 50 µA VZ = VREF (Figure 1) 2
Off-State Current IZ(OFF) 0.1 µA VZ = 20V, VREF = 0V (Figure 3) 2
Dynamic Output Impedance RZ 0.75 Ω VZ = VREF (Figure 1), f = 0Hz 2
Cathode Voltage (recommended operating) VZ 20 V 2
Cathode Current (recommended operating) IZ 0.05 100 mA 2
Operating Temperature TA -40 125 °C 2
Cathode Voltage VZ 20 V 2
Cathode Current IZ 150 mA 2
Junction Temperature Range TJ -40 150 °C 2
Storage Temperature TST -55 150 °C 2
Power Dissipation (SOT23) PD 330 mW SOT23; ratings apply to ambient temperature +25°C (Notes 5 & 6) 2
Maximum Temperature Coefficient 72 ppm/°C 1

CAD (KiCad official)

  • Symbol: ZR431F01TA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: zr431f01ta-etched.step / zr431f01ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); zr431f01ta.step / zr431f01ta.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
zr431f01ta.step 59 KB You want the bare part, or you mark your own boards.
zr431f01ta-etched.step 1.5 MB You want the part with ZR431F01TA already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 398 faces against 69 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (11 pp, sha256 93e5c58d4c91bc6c, retrieved 2026-08-17, tier: manufacturer)
  • 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