# AP431SHANTR-G1

**Diodes Incorporated** · Voltage Reference · SOT-23

AP431SHANTR-G1 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's non-inverting terminal. Regulates the cathode current so that this pin sits at VREF (2.495V typ) with respect to the anode. Typical reference input current 0.2µA, max 0.5µA. |
| 2 | CATHODE | passive | Cathode of the shunt regulator; sinks current from an external pull-up when VREF pin rises above the internal reference. Continuous cathode current range -100 to 150 mA; recommended operating cathode current 0.1 to 100 mA; absolute-max cathode voltage 40V (36V recommended). |
| 3 | ANODE | passive | Anode of the shunt regulator; the common return for cathode current and the reference-voltage return. Typically tied to circuit ground in shunt-regulator applications. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `AP431SHANTR-G1`
- `AP431SANTR-G1`
- `AP431SBNTR-G1`
- `AP431SHBNTR-G1`
- `AP431SAN1TR-G1`
- `AP431SHAN1TR-G1`
- `AP431SBN1TR-G1`
- `AP431SHBN1TR-G1`
- `AP431SARTR-G1`
- `AP431SHARTR-G1`
- `AP431SBRTR-G1`
- `AP431SHBRTR-G1`
- `AP431SAZTR-G1`
- `AP431SHAZTR-G1`
- `AP431SBZTR-G1`
- `AP431SHBZTR-G1`

## CAD (KiCad official)

- Symbol: `AP431SHANTR-G1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ap431shantr-g1-etched.step` / `ap431shantr-g1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap431shantr-g1.step` / `ap431shantr-g1.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/AP431SHANTR-G1.pdf) (17 pp, sha256 `770b9144c5e6fc10`, 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/ap431shantr-g1-datasheet.pdf)