component
AP431SARTR-G1
Public Unreviewedby Ray
Diodes Incorporated Voltage Reference, SOT-89-3. Datasheet-verified pinout, 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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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
CAD (KiCad official)
- Symbol:
AP431SARTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3 (KiCad packages3D, STEP)
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).