component
TL431AIDBVR
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownTL431AIDBVR
Texas Instruments · Voltage Reference · SOT-23-5
TL431AIDBVR from Texas Instruments, in a SOT-23-5. 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 | NC | unconnected | No internal connection on the TL431/TL431A/TL431B DBV (SOT-23-5) package pinout. |
| 2 | NC | unconnected | No internal connection, but this pin is attached to the die substrate; the datasheet states it must be connected to ANODE or left open. |
| 3 | CATHODE | bidirectional | Shunt current/voltage (I/O) terminal of the regulator; recommended continuous cathode current range is 1 mA to 100 mA (absolute maximum -100 mA to 150 mA) with cathode voltage up to 37 V absolute maximum (36 V recommended maximum). |
| 4 | REF | input | Reference input threshold voltage relative to the common ANODE pin; must be driven with a reference input current (typical 2 µA, max 4 µA) and is internally regulated to approximately 2.5 V (Vref = 2440-2550 mV typical range) in closed-loop operation. |
| 5 | ANODE | power_in | Common pin of the device, described in the datasheet as typically connected to ground (通常接地); serves as the reference/return terminal for the cathode current and reference voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Power Management (PMIC) |
| Pins | 5 |
CAD (KiCad official)
- Symbol:
TL431AIDBVR - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
tl431aidbvr-etched.step/tl431aidbvr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tl431aidbvr.step/tl431aidbvr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (86 pp, sha256
313277b9351e61ed, retrieved 2026-09-22, 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, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).