# DTC043ZUBTL

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

DTC043ZUBTL 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 | IN | input | Input (base) of the NPN digital transistor, driven through built-in R1 = 4.7kΩ with VIN rated 30 to -5 V and VI(on) min 1.1 V, VI(off) max 0.5 V. |
| 2 | GND | power_in | Ground (emitter) of the transistor, connected to the base through built-in R2 = 47kΩ. |
| 3 | OUT | output | Output (collector) of the NPN digital transistor, rated for IO of 100 mA and VCC of 50 V. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `DTC043ZUBTL`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dtc043zubtl-etched.step` / `dtc043zubtl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc043zubtl.step` / `dtc043zubtl.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/8588950380789448704) (9 pp, sha256 `69bd2fac0dadd326`, 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/dtc043zubtl-datasheet.pdf)