# DTD123YCHZGT116

**ROHM Semicon** · Digital Transistors · SOT-23

DTD123YCHZGT116 from ROHM Semicon, in a SOT-23. 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 connection, the emitter of the built-in NPN transistor and the lower end of R2 (10kΩ), on a part rated for IC 500mA. |
| 2 | IN (BASE) | input | Input through the built-in R1 (2.2kΩ) to the transistor base, with VIN rated -5 to 12 V, VI(off) max 0.3 V and VI(on) min 2.0 V. |
| 3 | OUT (COLLECTOR) | output | Output at the transistor collector, rated for VCC 50 V and IC 500 mA, with VO(on) typ 100 mV at IO = 50 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-23 |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `DTD123YCHZGT116`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `dtd123ychzgt116-etched.step` / `dtd123ychzgt116-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtd123ychzgt116.step` / `dtd123ychzgt116.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/dtd123ychzgt116-datasheet.pdf) (7 pp, sha256 `2af8bc4caa4c4a35`, 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/dtd123ychzgt116-datasheet.pdf)