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AS431BNTR-E1

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Diodes Incorporated Voltage Reference, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AS431BNTR-E1

Diodes Incorporated · Voltage Reference · SOT-23

AS431BNTR-E1 from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 REF input Reference input that sets the cathode voltage via an external divider, with a nominal VREF of 2.5V (2.475V to 2.525V for the 1.0% grade) and typical reference current of 0.7µA.
2 CATHODE passive Shunt regulator cathode that can be set between VREF (2.5V) and 36V (40V absolute maximum), with a sink current of 1mA to 100mA.
3 ANODE power_in Anode terminal, normally connected to ground, with cathode current range of -100 to 150mA absolute maximum.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
Category Power Management (PMIC)
Pins 3

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 (1.0% tolerance) VREF 2.475 2.5 2.525 V VKA = VREF, IKA = 10mA; TA = +25°C 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 8 mV VKA = VREF, IKA = 10mA; 0 to +70°C 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 10 mV VKA = VREF, IKA = 10mA; -40 to +85°C 5
Deviation of Reference Voltage Over Full Temperature Range ΔVREF 4.5 16 mV VKA = VREF, IKA = 10mA; -40 to +125°C 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage ΔVREF/ΔVKA -1 -2.7 mV/V IKA = 10mA; ΔVKA = 10V to VREF 5
Ratio of Change in Reference Voltage to Change in Cathode Voltage ΔVREF/ΔVKA -0.5 -2 mV/V IKA = 10mA; ΔVKA = 36V to 10V 5
Reference Current IREF 0.7 4 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞ 5
Deviation of Reference Current Over Full Temperature Range ΔIREF 0.4 1.2 µA IKA = 10mA, R1 = 10kΩ, R2 = ∞, TA = -40 to +125°C 5
Minimum Cathode Current for Regulation IKA(Min) 0.4 1 mA VKA = VREF 5
Off-state Cathode Current IKA(Off) 0.05 1 µA VKA = 36V, VREF = 0 5
Dynamic Impedance ZKA 0.15 0.5 Ω VKA = VREF, IKA = 1 to 100mA, f ≤ 1.0kHz 5
Thermal Resistance, SOT23 package θJC 135.9 °C/W 5
Cathode Voltage (recommended operating) VKA 36 V Printed minimum is the symbol VREF (not a numeric value) 4
Cathode Current (recommended operating) IKA 1 100 mA 4
Operating Ambient Temperature Range TA -40 125 °C 4
Cathode Voltage (absolute maximum) VKA 40 V 4
Cathode Current Range (Continuous) IKA -100 150 mA Continuous 4
Reference Input Current Range IREF 10 mA 4
Power Dissipation (N package, SOT23) PD 370 mW N, K package 4
Junction Temperature TJ 150 °C 4
Storage Temperature Range TSTG -65 150 °C 4
ESD (Human Body Model) ESD 2000 V Human Body Model 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing Abs ESD ESD (Human Body Model) 2000 V Note 5: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 4

CAD (KiCad official)

  • Symbol: AS431BNTR-E1
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: as431bntr-e1-etched.step / as431bntr-e1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); as431bntr-e1.step / as431bntr-e1.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (20 pp, sha256 03f54aac77941ed9, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF