# DTA143EUAT106

**ROHM Semicon** · Digital Transistors · SOT-323

DTA143EUAT106 from ROHM Semicon, in a SOT-323. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground (+) / emitter of the built-in PNP transistor, connected to R2 and the common return of the inverter. |
| 2 | IN | input | Base input through built-in R1 = 4.7kΩ (R2 = 4.7kΩ to emitter); VIN range -30 to 10 V, VI(off) max -0.5 V and VI(on) min -3.0 V. |
| 3 | OUT | output | Collector output of the digital transistor, rated up to -100 mA output current and VCC -50 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-323 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `DTA143EUAT106`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dta143euat106-etched.step` / `dta143euat106-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dta143euat106.step` / `dta143euat106.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202950066704384) (12 pp, sha256 `eb22dbb9c00015d6`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/dta143euat106-datasheet.pdf)