AS431ANTR-E1

@@ -0,0 +1,61 @@+# AS431ANTR-E1++**Diodes Incorporated** · Voltage Reference · SOT-23++AS431ANTR-E1 from Diodes Incorporated, in a SOT-23. 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 to the internal error amplifier. Compared against the internal 2.500 V bandgap; when REF exceeds VREF the cathode sinks current. Input current IREF typically 0.7 uA (4 uA max); absolute maximum reference current 10 mA. |+| 2 | CATHODE | input | Cathode (K) of the shunt regulator. Sinks the regulated current from the load; operating cathode voltage 2.5 V to 36 V, cathode current 1 mA to 100 mA (absolute max -100 to 150 mA). Off-state cathode current 0.05 uA typ at VKA = 36 V. |+| 3 | ANODE | power_in | Anode (A) of the shunt regulator, common return for cathode current and reference. Connect to the low-side rail (ground in a typical shunt-reference circuit). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AS431ANTR-E1`+- `AS431ANTR-E1BNTR-E1`+- `AS431ANTR-E1ANTR-G1`+- `AS431ANTR-E1BNTR-G1`+- `AS431ANTR-E1AKTR-E1`+- `AS431ANTR-E1BKTR-E1`+- `AS431ANTR-E1AKTR-G1`+- `AS431ANTR-E1BKTR-G1`+- `AS431ANTR-E1ARTR-E1`+- `AS431ANTR-E1BRTR-E1`+- `AS431ANTR-E1ARTR-G1`+- `AS431ANTR-E1BRTR-G1`+- `AS431ANTR-E1AZ-E1`+- `AS431ANTR-E1AZTR-E1`+- `AS431ANTR-E1BZ-E1`+- `AS431ANTR-E1BZTR-E1`+- `AS431ANTR-E1AZ-G1`+- `AS431ANTR-E1AZTR-G1`+- `AS431ANTR-E1BZ-G1`+- `AS431ANTR-E1BZTR-G1`++## CAD (KiCad official)++- Symbol: `AS431ANTR-E1`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AS431ANTR-E1.pdf) (20 pp, sha256 `03f54aac77941ed9`, 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/as431antr-e1-datasheet.pdf)

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