TL431BQDBZR

@@ -0,0 +1,60 @@+# TL431BQDBZR++**Texas Instruments** · Voltage Reference · SOT-23-3++TL431BQDBZR 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 | Shunt cathode (K). Shunt current/voltage input; connects to the load via a series resistor. Sinks 1 mA to 100 mA when regulating; cathode voltage is set by the divider that drives REF to Vref (~2.5 V). |+| 2 | REF | input | Reference input to the internal error amplifier. Compared against the internal ~2.5 V bandgap reference; connect to the tap of the external resistor divider from CATHODE to ANODE to program the regulated cathode voltage. |+| 3 | ANODE | passive | Shunt anode (A). Common return, normally tied to circuit ground. |++## 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.++- `TL431BQDBZR`+- `TL431BQDBZRDBZT`+- `TL431BQDBZRDBVR`+- `TL431BQDBZRDBVT`+- `TL431BQDBZRDR`+- `TL431BQDBZRD`+- `TL431BQDBZRP`+- `TL431BQDBZRPS`+- `TL431BQDBZRPWR`+- `TL431BQDBZRPW`+- `TL431BQDBZRLP`+- `TL431BQDBZRLPR`+- `TL431BQDBZRLPM`+- `TL431BQDBZRDCKR`+- `TL431BQDBZRDCKT`+- `TL431BQDBZRPK`++## CAD (KiCad official)++- Symbol: `TL431BQDBZR`+- 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/tl431) (86 pp, sha256 `0eb18c491f5517a3`, 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/tl431bqdbzr-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "tl431bqdbzr",+  "version": "0.1.0",+  "type": "component",+  "description": "Texas Instruments Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "power management (pmic)",+    "tl431bqdbzr"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "tl431bqdbzr.kicad_sym",+    "tl431bqdbzr.kicad_mod",+    "tl431bqdbzr.glb",+    "tl431bqdbzr.step",+    "tl431bqdbzr.lbr",+    "docs/hero.png",+    "docs/tl431bqdbzr-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file