LM4040D30IDBZR

@@ -0,0 +1,47 @@+# LM4040D30IDBZR++**Texas Instruments** · Voltage Reference · SOT-23++LM4040D30IDBZR from Texas Instruments, 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 | Shunt current/voltage input (cathode of the reference). Regulates to 3.0 V above the anode when biased through a series resistor RS. Recommended cathode current 45 µA to 15 mA. |+| 2 | ANODE | passive | Common pin, normally connected to ground. Return path for the shunt current. |+| 3 | SUB | passive | Substrate connection. Pin 3 is attached to substrate and must be connected to ANODE or left open. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++Same part, different packaging or reel option.++- `LM4040D30IDBZR`+- `LM4040D30IDBZT`+- `LM4040D30IDBZRIDCKR`+- `LM4040D30IDBZRIDCKT`++## CAD (KiCad official)++- Symbol: `LM4040D30IDBZR`+- 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:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lm4040d30idbzr.pdf) (60 pp, sha256 `9969399d53c90478`, 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/lm4040d30idbzr-datasheet.pdf)

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