# DTC143ZUAT106

**ROHM Semicon** · Digital Transistors · SOT-323(SC-70)

DTC143ZUAT106 from ROHM Semicon, in a SOT-323(SC-70). 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 (EMITTER) | power_in | Ground / emitter of the built-in NPN transistor; R2 (47kΩ) connects between this pin and the input base node. |
| 2 | IN (BASE) | input | Input / base connected through built-in R1 = 4.7kΩ, with input voltage VI(off) max 0.5V, VI(on) min 1.3V and absolute maximum VIN of -5 to 30V. |
| 3 | OUT (COLLECTOR) | output | Output / collector of the built-in NPN transistor, rated for VCC 50V and IO 100mA maximum. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-323(SC-70) |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `DTC143ZUAT106`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323(SC-70) (KiCad packages3D, STEP)
- 3D model files: `dtc143zuat106-etched.step` / `dtc143zuat106-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc143zuat106.step` / `dtc143zuat106.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/8588884797272313856) (12 pp, sha256 `5c656dbdc912cdb4`, retrieved 2026-10-12, 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/dtc143zuat106-datasheet.pdf)