component
TL431ACDBZT
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+40@@ -0,0 +1,40 @@+# TL431ACDBZT++**Texas Instruments** · Voltage Reference · SOT-23-3++TL431ACDBZT 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 | bidirectional | Shunt regulator current/voltage terminal (I/O); in regulation must be supplied with a cathode current of 1 mA to 100 mA (Imin to max recommended IKA), with cathode voltage up to 36 V (absolute maximum 37 V, current range -100 mA to 150 mA). |+| 2 | REF | input | Reference/threshold input relative to the common ANODE pin; internal amplifier compares this pin to the ~2.5 V internal reference and requires a reference input current (typ. 2 µA, max 4-10 µA) to bias the input transistor. |+| 3 | ANODE | passive | Common pin of the device, normally connected to ground/return; serves as the reference (0 V) node for the CATHODE and REF pin voltages. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-23-3 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `TL431ACDBZT`+- Footprint: `Package_TO_SOT_SMD:SOT-23-3`+- 3D model: SOT-23-3 (KiCad packages3D, STEP)+- 3D model files: `tl431acdbzt-etched.step` / `tl431acdbzt-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tl431acdbzt.step` / `tl431acdbzt.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/tl431) (86 pp, sha256 `313277b9351e61ed`, retrieved 2026-09-23, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/tl431acdbzt-datasheet.pdf)
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