component
LM4040AIZ-4.1
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Texas Instruments Voltage Reference, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+40@@ -0,0 +1,40 @@+# LM4040AIZ-4.1++**Texas Instruments** · Voltage Reference · TO-92-3++LM4040AIZ-4.1 from Texas Instruments, in a TO-92-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | * | passive | Pin marked * must be left floating or connected to the anode (footnote 1); TI recommends connecting it to the anode in applications with high EMI or significant high-frequency switching noise. |+| 2 | Cathode | passive | Cathode is the shunt current/output voltage pin; the regulated reverse breakdown voltage is developed across cathode and anode, with an external series resistor setting the current. |+| 3 | Anode | passive | Anode is normally connected to ground; the datasheet specifies a reverse current range of 68 µA minimum to 15 mA maximum for the LM4040-N-4.1. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TO-92-3 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `LM4040AIZ-4.1`+- Footprint: `Package_TO_SOT_THT:TO-92_Inline`+- 3D model: TO-92-3 (KiCad packages3D, STEP)+- 3D model files: `lm4040aiz-4-1-etched.step` / `lm4040aiz-4-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm4040aiz-4-1.step` / `lm4040aiz-4-1.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4040-n) (84 pp, sha256 `5655b017c6397138`, retrieved 2026-10-08, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/lm4040aiz-4-1-datasheet.pdf)
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