LM4041QCEM3-1.2NO

@@ -0,0 +1,51 @@+# LM4041QCEM3-1.2NO++**Texas Instruments** · Voltage Reference · SOT-23-3++LM4041QCEM3-1.2NO from Texas Instruments, in a SOT-23-3. 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 / negative terminal (-). Shunt current flows in here and the 1.225 V reference voltage is developed between this pin and the anode. Bias through a series resistor from the supply so the shunt current stays within 60 µA to 12 mA. |+| 2 | ANODE | passive | Anode / positive terminal (+). Normally tied to ground in a shunt-reference topology; forms the return for the 1.225 V reference developed across cathode-to-anode. |+| 3 | NC | unconnected | No internal connection. Must be left floating, or connected to the anode (+) pin. TI recommends tying to anode in high-EMI environments (e.g. near transformers) or where significant high-frequency switching noise is present. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-3 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## Ordering variants++Same part, different packaging or reel option.++- `LM4041QCEM3-1.2NO`+- `LM4041QCEM3-1.2NOIDBZ`+- `LM4041QCEM3-1.2NOQDBZ`+- `LM4041QCEM3-1.2NOIDCK`+- `LM4041QCEM3-1.2NOILP`+- `LM4041QCEM3-1.2NOILPR`+- `LM4041QCEM3-1.2NOILPE3`++## CAD (KiCad official)++- Symbol: `LM4041QCEM3-1.2NO`+- Footprint: `Package_TO_SOT_SMD:SOT-23-3`+- 3D model: SOT-23-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm4041-n) (None pp, sha256 `cd8ea9cf52a32021`, retrieved 2026-08-17, 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:** `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/lm4041qcem3-1-2no-datasheet.pdf)

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