TS431AILT-TP
Public Unreviewedby Ray
TECH PUBLIC Voltage Reference, SOT-23-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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README
markdownTS431AILT-TP
TECH PUBLIC · Voltage Reference · SOT-23-5
TS431AILT-TP from TECH PUBLIC, 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 to functional die. Pin is attached to the substrate; must be tied to ANODE or left open (do NOT connect to CATHODE or REF). |
| 2 | NC | unconnected | No internal connection to functional die. Pin is attached to the substrate; must be tied to ANODE or left open. |
| 3 | CATHODE | power_in | Cathode terminal of the shunt regulator (VKA). Sinks the regulation current (0.1-100 mA continuous, absolute max 150 mA). Maximum cathode voltage 18 V; typically pulled up through a series resistor RB from the supply. |
| 4 | REF | input | Reference input pin. The internal error amplifier drives the cathode to whatever current is needed to hold this pin at VREF (typ 1.24 V) relative to ANODE. Typically connected to the midpoint of an external R1/R2 divider from CATHODE to ANODE to program VKA. Reference input current typ 0.7 µA (max 4 µA); absolute max 10 mA. |
| 5 | ANODE | power_in | Anode terminal - the device's ground/return reference. All voltage values (VKA, VREF) are measured with respect to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | TECH PUBLIC |
| Package | SOT-23-5 |
| Category | PMIC |
| Pins | 5 |
Ordering variants
Same part, different packaging or reel option.
TS431AILT-TP
CAD (KiCad official)
- Symbol:
TS431AILT-TP - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ts431ailt-tp.step |
85 KB | You want the bare part, or you mark your own boards. |
ts431ailt-tp-etched.step |
1.6 MB | You want the part with TS431AILT-TP already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 427 faces against 102 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: TECH PUBLIC datasheet (5 pp, sha256
2e2909b00d9d66e0, retrieved 2026-08-17, tier: lcsc) - 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).