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AZ431AR-ATRE1
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Diodes Incorporated Voltage Reference, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+47@@ -0,0 +1,47 @@+# AZ431AR-ATRE1++**Diodes Incorporated** · Voltage Reference · SOT-89-3++AZ431AR-ATRE1 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 (feedback) input. Compared internally to the 2.5 V bandgap; when REF exceeds VREF the internal transistor sinks current from cathode to anode. Max reference input current 10 mA absolute, typ input bias 0.7 µA. |+| 2 | CATHODE | passive | Shunt cathode (K). Sinks the regulation current when REF rises above VREF. Operating cathode voltage VREF to 36 V, cathode current 1 mA to 100 mA (absolute max -100 to 150 mA), off-state leakage 0.05 µA typ. |+| 3 | ANODE | passive | Shunt anode (A), the common return for the reference and the shunt transistor. Normally tied to the low side of the regulated node (circuit ground in a standard shunt-regulator topology). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AZ431AR-ATRE1`+- `AZ431AR-ATRE1R`+- `AZ431AR-ATRE1Z`+- `AZ431AR-ATRE1Z`+- `AZ431AR-ATRE1N`+- `AZ431AR-ATRE1N`++## CAD (KiCad official)++- Symbol: `AZ431AR-ATRE1`+- 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](https://www.diodes.com/assets/Datasheets/AZ431AR-ATRE1.pdf) (19 pp, sha256 `af7f4848d81a3997`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/az431ar-atre1-datasheet.pdf)
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