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AP431SANTR-G1
Public Made by Adomby adom
Diodes Incorporated Global Sourcing Parts, 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
markdownAP431SANTR-G1
Diodes Incorporated · Global Sourcing Parts · SOT-23
AP431SANTR-G1 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 regulation point; VREF is 2.487 V to 2.512 V for AP431SA at 25°C, and the reference input current is rated at 10 mA maximum. |
| 2 | ANODE | passive | Common terminal of the shunt regulator, which the datasheet does not give a separate voltage or current rating for; the cathode current IKA is limited to 0.1 to 100 mA in the recommended operating conditions. |
| 3 | CATHODE | passive | Regulated output terminal, with cathode voltage VKA from VREF up to 36 V recommended (40 V absolute maximum) and cathode current from 0.1 to 100 mA recommended (-100 to 150 mA absolute continuous). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Global Sourcing Parts |
| 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 (AP431SA, 0.5%, IKA=1mA) | VREF | 2.487 | 2.5 | 2.512 | V | VKA = VREF, IKA = 1mA | 5 |
| Cathode Current Range (Recommended, Continuous) | IKA | 0.1 | 100 | mA | 4 | ||
| Operating Ambient Temperature Range | TA | -40 | 125 | °C | 4 | ||
| Cathode Current Range (Absolute Maximum, Continuous) | IKA | -100 | 150 | mA | 4 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| Storage Temperature Range (Absolute Maximum) | TSTG | -65 | 150 | °C | 4 | ||
| Deviation of Reference Voltage Over 0°C to +70°C | VREF | 3 | 6 | mV | VKA = VREF, IKA = 1mA, 0°C to +70°C | 5 | |
| Deviation of Reference Voltage Over -40°C to +85°C | VREF | 6 | 10 | mV | VKA = VREF, IKA = 1mA, -40°C to +85°C | 5 | |
| Deviation of Reference Voltage Over -40°C to +125°C | VREF | 11 | 18 | mV | VKA = VREF, IKA = 1mA, -40°C to +125°C | 5 | |
| Ratio of Change in Reference Voltage to Change in Cathode Voltage (VKA = 10V to VREF) | VREF/VKA | -1 | -2.7 | mV/V | IKA = 1mA, VKA = 10V to VREF | 5 | |
| Ratio of Change in Reference Voltage to Change in Cathode Voltage (VKA = 36V to 10V) | VREF/VKA | -0.5 | -2 | mV/V | IKA = 1mA, VKA = 36V to 10V | 5 | |
| Reference Current | IREF | 0.2 | 0.5 | µA | IKA = 1mA, R1 = 10kΩ, R2 = (symbol missing in datasheet text) | 5 | |
| Deviation of Reference Current Over Full Temperature Range | IREF | 0.1 | 0.3 | µA | IKA = 1mA, R1 = 10kΩ, TA = -40°C to +125°C | 5 | |
| Minimum Cathode Current for Regulation | IKA (Min) | 50 | 100 | µA | VKA = VREF | 5 | |
| Off-state Cathode Current | IKA (Off) | 0.05 | 1 | µA | VKA = 36V, VREF = 0 | 5 | |
| Dynamic Impedance | ZKA | 0.1 | 0.3 | Ω | VKA = VREF, IKA = 1mA to 100mA, f 1.0kHz (comparison sign missing in datasheet text) | 5 | |
| Cathode Voltage (Absolute Maximum) | VKA | 40 | V | 4 | |||
| Reference Input Current Range (Absolute Maximum) | IREF | 10 | mA | 4 | |||
| Power Dissipation (SOT23) | PD | 350 | mW | 4 | |||
| Junction Temperature | TJ | 150 | °C | 4 | |||
| ESD (Human Body Model) | ESD | 5500 | V | Human Body Model | 4 | ||
| ESD (Machine Model) | ESD | 300 | V | Machine Model | 4 | ||
| Cathode Voltage (Recommended) | VKA | 36 | V | Minimum is VREF (non-numeric in datasheet) | 4 | ||
| Thermal Resistance Junction-to-Case (SOT23) | θJC | 140 | °C/W | 5 |
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 |
|---|---|---|---|---|
| contacts | tin | Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 Weight: SOT23: 0.009 grams (Approximate) | 16 |
CAD (KiCad official)
- Symbol:
AP431SANTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ap431santr-g1-etched.step/ap431santr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap431santr-g1.step/ap431santr-g1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (17 pp, sha256
770b9144c5e6fc10, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).