LM4040B25FTA

@@ -0,0 +1,44 @@+# LM4040B25FTA++**Diodes Incorporated** · Voltage Reference · SOT-23++LM4040B25FTA 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 | Cathode | passive | Cathode of the shunt voltage reference. Bias through a series resistor from the positive supply; reverse current must be between 60µA and 15mA to maintain regulation at VREF = 2.5V above the Anode. |+| 2 | Anode | passive | Anode of the shunt voltage reference. Typically tied to circuit ground (return). All datasheet voltages are referenced to this pin unless otherwise stated. |+| 3 | NC | unconnected | No internal connection. Must be left floating or tied to pin 2 (Anode). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Diodes Incorporated |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++Same part, different packaging or reel option.++- `LM4040B25FTA`++## CAD (KiCad official)++- Symbol: `LM4040B25FTA`+- 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/LM4040B25FTA.pdf) (16 pp, sha256 `273ea3e61e9ec2d9`, 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/lm4040b25fta-datasheet.pdf)

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