# AD-DTC114YM

**Changjing** · Digital Transistors · SOT-723

AD-DTC114YM from Changjing, in a SOT-723. 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 of the NPN digital transistor, connected through built-in R1 (7 to 13 kΩ) to the base; input voltage range is -6 to 40 V, with VI(off) min 0.3 V and VI(on) max 1.4 V. |
| 2 | GND | power_in | Ground, connected to the emitter and to R2 of the built-in bias network. |
| 3 | OUT | output | Open-collector output of the NPN transistor, rated for 70 mA output current (100 mA peak) and 50 V supply voltage, with VO(on) max 0.3 V at 5 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-723 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage (off) | VI(off) | 0.3 |  |  | V | VCC = 5V, IO = 100µA | 3 |
| Input voltage (on) | VI(on) |  |  | 1.4 | V | VO = 0.3V, IO = 1mA | 3 |
| Output voltage (on) | VO(on) |  |  | 0.3 | V | IO/II = 5mA/0.25mA | 3 |
| Input current | II |  |  | 0.88 | mA | VI = 5V | 3 |
| Output current (off) | IO(off) |  |  | 0.5 | µA | VCC = 50V, VI = 0V | 3 |
| DC current gain | GI | 68 |  |  | - | VO = 5V, IO = 5mA | 3 |
| Input resistance | R1 | 7 | 10 | 13 | kΩ |  | 3 |
| Resistance ratio | R2/R1 | 3.7 | 4.7 | 5.7 |  |  | 3 |
| Supply voltage | VCC |  |  | 50 | V |  | 3 |
| Input voltage | VIN | -6 |  | 40 | V |  | 3 |
| Output current | IO |  |  | 70 | mA | Maximum allowed temperature Tj = 25°C | 3 |
| Peak collector current | ICM |  |  | 100 | mA |  | 3 |
| Maximum power dissipation (AD-DTC114YM, SOT-723 column M) | PD |  |  | 100 | mW | Maximum allowed temperature Tj = 25°C | 3 |
| Operating junction and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 3 |

## CAD (KiCad official)

- Symbol: `AD-DTC114YM`
- Footprint: `Package_TO_SOT_SMD:SOT-723`
- 3D model: SOT-723, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.5 mm nominal SOT-723 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `ad-dtc114ym-etched.step` / `ad-dtc114ym-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-dtc114ym.step` / `ad-dtc114ym.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590281486663245824) (17 pp, sha256 `79d4102f7c346fdc`, 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/ad-dtc114ym-datasheet.pdf)