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AZ431BN-ATRE1
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Diodes Incorporated Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+61@@ -0,0 +1,61 @@+# AZ431BN-ATRE1++**Diodes Incorporated** · Voltage Reference · SOT-23++AZ431BN-ATRE1 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 (feedback) input to the internal error amplifier. Compared against the internal 2.5V VREF; drive from the external resistor divider between CATHODE and ANODE to program VKA = VREF(1 + R1/R2). Reference input current typ 0.7 μA (max 4 μA); absolute-max IREF is 10 mA. |+| 2 | CATHODE | passive | Cathode (K) of the shunt regulator; sinks the regulation current IKA from the supply through a series resistor. Operating VKA from VREF up to 36V, IKA 1 mA to 100 mA (absolute max -100 to +150 mA, VKA 40V). Dynamic impedance typ 0.15 Ω. |+| 3 | ANODE | passive | Anode (A) of the shunt regulator; the low-side return, tied to circuit ground (or the bottom of the external feedback divider). All cathode and reference currents return through this pin. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `AZ431BN-ATRE1AN-ATRE1`+- `AZ431BN-ATRE1BN-ATRE1`+- `AZ431BN-ATRE1AN-ATRG1`+- `AZ431BN-ATRE1BN-ATRG1`+- `AZ431BN-ATRE1AR-ATRE1`+- `AZ431BN-ATRE1BR-ATRE1`+- `AZ431BN-ATRE1AR-ATRG1`+- `AZ431BN-ATRE1BR-ATRG1`+- `AZ431BN-ATRE1AZ-AE1`+- `AZ431BN-ATRE1AZ-ATRE1`+- `AZ431BN-ATRE1BZ-AE1`+- `AZ431BN-ATRE1BZ-ATRE1`+- `AZ431BN-ATRE1AZ-AG1`+- `AZ431BN-ATRE1AZ-ATRG1`+- `AZ431BN-ATRE1BZ-AG1`+- `AZ431BN-ATRE1BZ-ATRG1`+- `AZ431BN-ATRE1AK-ATRE1`+- `AZ431BN-ATRE1BK-ATRE1`+- `AZ431BN-ATRE1AK-ATRG1`+- `AZ431BN-ATRE1BK-ATRG1`++## CAD (KiCad official)++- Symbol: `AZ431BN-ATRE1`+- 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/AZ431BN-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/az431bn-atre1-datasheet.pdf)
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