# DTC043EUBTL

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

DTC043EUBTL 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 (BASE) | input | Input through built-in R1 (4.7kΩ) to the base, with an absolute maximum input voltage of 30 to -10 V, VI(off) max 0.5 V and VI(on) min 2.2 V. |
| 2 | GND (EMITTER) | power_in | Ground connection to the emitter of the built-in NPN transistor, also returned through R2 (4.7kΩ) to the base. |
| 3 | OUT (COLLECTOR) | output | Output at the collector, rated for output current IO of 100 mA and supply voltage VCC of 50 V maximum. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `DTC043EUBTL`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dtc043eubtl-etched.step` / `dtc043eubtl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc043eubtl.step` / `dtc043eubtl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/dtc043eubtl-datasheet.pdf) (9 pp, sha256 `3ca8cdbf046b8948`, retrieved 2026-11-02, tier: manufacturer)
- **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/dtc043eubtl-datasheet.pdf)