component
AP431SARTR-G1
Public Made by Adomby adom
Diodes Incorporated Voltage Reference, SOT-89-3. Pinout extracted from 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
markdownAP431SARTR-G1
Diodes Incorporated · Voltage Reference · SOT-89-3
AP431SARTR-G1 from Diodes Incorporated, in a SOT-89-3. 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 | REF | input | Reference input pin. Feedback sense input compared against the internal 2.500V (AP431SA/B) / 2.495V (AP431SHA/B) bandgap reference by the internal error amplifier. Typical reference input current 0.2µA (0.5µA max) at IKA=1mA, R1=10kΩ. Absolute maximum IREF = 10mA. |
| 2 | ANODE | power_in | Anode terminal (device return/ground). Emitter of the internal shunt transistor and low-side of the internal amplifier - typically connected to circuit ground in a shunt regulator configuration. |
| 3 | CATHODE | power_in | Cathode terminal (shunt regulation node). Sinks current from the regulated node when VKA rises above the programmed threshold. Recommended operating VKA range: VREF to 36V; IKA range 0.1mA to 100mA. Absolute maximum VKA = 40V; continuous IKA = -100 to 150mA. Dynamic impedance 0.1Ω typ. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-89-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
AP431SARTR-G1AP431SARTR-G1HARAP431SARTR-G1BRAP431SARTR-G1HBRAP431SARTR-G1ANAP431SARTR-G1AN1AP431SARTR-G1HANAP431SARTR-G1HAN1AP431SARTR-G1BNAP431SARTR-G1BN1AP431SARTR-G1HBNAP431SARTR-G1HBN1AP431SARTR-G1AZAP431SARTR-G1HAZAP431SARTR-G1BZAP431SARTR-G1HBZ
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%) | VREF | 2.487 | 2.5 | 2.512 | V | VKA = VREF, IKA = 1mA | 5 |
| Deviation of Reference Voltage over Full Temperature Range | VREF | 3 | 6 | mV | VKA = VREF, IKA = 1mA, 0°C to +70°C | 5 | |
| Deviation of Reference Voltage over Full Temperature Range | VREF | 6 | 10 | mV | VKA = VREF, IKA = 1mA, -40°C to +85°C | 5 | |
| Deviation of Reference Voltage over Full Temperature Range | 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 | 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 | 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 | 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 | 5 | |
| Cathode Voltage (recommended) | VKA | 36 | V | 4 | |||
| Cathode Current (recommended) | IKA | 0.1 | 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 (SOT89) | PD | 750 | mW | SOT89 | 4 | ||
| Junction Temperature | TJ | 150 | °C | 4 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 4 | ||
| ESD (Human Body Model) | ESD | 5500 | V | Human Body Model | 4 | ||
| ESD (Machine Model) | ESD | 300 | V | Machine Model | 4 | ||
| Thermal Resistance Junction-to-Case (SOT89) | θJC | 80 | °C/W | SOT89 | 5 |
CAD (KiCad official)
- Symbol:
AP431SARTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
- 3D model files:
ap431sartr-g1-etched.step/ap431sartr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap431sartr-g1.step/ap431sartr-g1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (None pp, sha256
770b9144c5e6fc10, 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).