# DTC123JE

**HXY MOSFET** · Digital Transistors · SOT-523

DTC123JE from HXY MOSFET, in a SOT-523. 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 terminal of the built-in bias-resistor inverter, with an input voltage rating of -10 to +40 V, VI(off) of 0.5 V max at VCC=5V and IO=100µA, and VI(on) of 1.1 V at VO=0.3V and IO=5mA. |
| 2 | GND | power_in | Ground reference pin; the datasheet gives no separate voltage or current limit for this pin. |
| 3 | OUT | output | Output terminal with an output current rating of 100 mA, VO(on) of 0.1 to 0.3 V at IO/II=5mA/0.25mA, and IO(off) of 0.5 µA max at VCC=50V and VI=0. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOT-523 |
| 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 resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ |  | 1 |
| Resistance ratio | R2/R1 | 17 | 21 | 26 |  |  | 1 |
| Input voltage (off) | VI(off) |  |  | 0.5 | V | VCC=5V, IO=100µA | 1 |
| Input voltage (on) | VI(on) | 1.1 |  |  | V | VO=0.3V, IO=5mA | 1 |
| Output voltage (on) | VO(on) |  | 0.1 | 0.3 | V | IO/II=5mA/0.25mA | 1 |
| Input current | II |  |  | 3.6 | mA | VI=5V | 1 |
| Output current (off) | IO(off) |  |  | 0.5 | µA | VCC=50V, VI=0 | 1 |
| DC current gain | GI | 80 |  |  |  | VO=5V, IO=10mA | 1 |
| Transition frequency | fT | 250 |  |  | MHz | VO=10V, IO=5mA, f=100MHz | 1 |
| Input voltage | VIN | -10 |  | 40 | V |  | 1 |
| Output current | IO |  |  | 100 | mA |  | 1 |
| Power dissipation | PD |  |  | 150 | mW |  | 1 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `DTC123JE`
- Footprint: `Package_TO_SOT_SMD:SOT-523`
- 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 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: `dtc123je-etched.step` / `dtc123je-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc123je.step` / `dtc123je.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590908648174395392) (4 pp, sha256 `72b7db97007f06fe`, retrieved 2026-10-09, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/dtc123je-datasheet.pdf)