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AN431BN-ATRE1
Public Made by Adomby adom
Diodes Incorporated Voltage References, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownAN431BN-ATRE1
Diodes Incorporated · Voltage References · SOT-23
AN431BN-ATRE1 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 | CATHODE | passive | Cathode of the shunt regulator and output node, operating from VREF up to 36V (40V absolute maximum) with 1mA to 100mA cathode current. |
| 2 | REF | input | Reference input that sets the output voltage via a resistor divider against the 2.5V internal reference, with typical reference current of 0.7µA. |
| 3 | ANODE | power_in | Anode of the shunt regulator, connected to ground in the typical shunt regulator circuit. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Power Management ICs |
| 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% grade, B) | VREF | 2.475 | 2.5 | 2.525 | V | VKA=VREF, IKA=10mA | 5 |
| Deviation of Reference Voltage, 0 to +70C | ΔVREF | 4.5 | 8 | mV | VKA=VREF, IKA=10mA, 0 to +70oC | 5 | |
| Deviation of Reference Voltage, -40 to +85C | ΔVREF | 4.5 | 10 | mV | VKA=VREF, IKA=10mA, -40 to +85oC | 5 | |
| Deviation of Reference Voltage, -40 to +125C | ΔVREF | 4.5 | 16 | mV | VKA=VREF, IKA=10mA, -40 to +125oC | 5 | |
| Ratio of Change in Reference Voltage to Change in Cathode Voltage (10V to VREF) | 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 (36V to 10V) | 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 +125oC | 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, SOT-23 | θJC | 135 | ºC/W | 5 | |||
| Cathode Voltage | VKA | 40 | V | 4 | |||
| Cathode Current Range (Continuous) | IKA | -100 | 150 | mA | 4 | ||
| Reference Input Current Range | IREF | 10 | mA | 4 | |||
| Power Dissipation | PD | 370 | mW | 4 | |||
| Junction Temperature | TJ | 150 | ºC | 4 | |||
| Storage Temperature Range | TSTG | -65 | 150 | ºC | 4 | ||
| ESD (Human Body Model) | ESD | 2000 | V | 4 | |||
| Cathode Voltage (operating) | VKA | 2.5 | 36 | V | Min printed as VREF (2.5V typ reference) | 4 | |
| Cathode Current (operating) | IKA | 1 | 100 | mA | 4 | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | ºC | 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 4: 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:
AN431BN-ATRE1 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
an431bn-atre1-etched.step/an431bn-atre1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);an431bn-atre1.step/an431bn-atre1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (13 pp, sha256
abb5965f39adbd33, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).