# KTA1023-Y-AT

**KEC Semicon** · Bipolar (BJT) · TO-92-3

KTA1023-Y-AT from KEC Semicon, in a TO-92-3. 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 | EMITTER | passive | Emitter terminal of the PNP transistor, rated for an emitter current of 800 mA (maximum rating table). |
| 2 | COLLECTOR | passive | Collector terminal of the PNP transistor, rated for a collector current of -800 mA and a collector-emitter voltage VCEO of -120 V. |
| 3 | BASE | passive | Base terminal of the PNP transistor, rated for an emitter-base voltage VEBO of -5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KEC Semicon |
| Package | TO-92-3 |
| 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 |
|---|---|---|---|---|---|---|---|
| Emitter Cut-off Current | IEBO |  |  | -100 | nA | VEB=-5V, IC=0 | 1 |
| Collector Cut-off Current | ICBO |  |  | -100 | nA | VCB=-120V, IE=0 | 1 |
| Collector-Emitter Saturation Voltage (row label as printed; symbol V(BR)CEO) | V(BR)CEO | -120 |  |  | V | IC=-10mA, IB=0 | 1 |
| Emitter-Base Breakdwon Voltage | V(BR)EBO | -5 |  |  | V | IE=-1mA, IC=0 | 1 |
| DC Current Gain (Y class) | hFE | 120 |  | 240 |  | VCE=-5V, IC=-100mA | 1 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  |  | -1 | V | IC=-500mA, IB=-50mA | 1 |
| Base-Emitter Voltage | VBE |  |  | -1 | V | VCE=-5V, IC=-500mA | 1 |
| Collector Output Capacitance | Cob |  |  | 40 | pF | VCB=-10V, IE=0, f=1MHz | 1 |
| Collector-Base Voltage | VCBO |  |  | -120 | V | Ta=25 | 1 |
| Collector-Emitter Voltage | VCEO |  |  | -120 | V | Ta=25 | 1 |
| Emitter-Base Voltage | VEBO |  |  | -5 | V | Ta=25 | 1 |
| Collector Current | IC |  |  | -800 | mA | Ta=25 | 1 |
| Emitter Current | IE |  |  | 800 | mA | Ta=25 | 1 |
| Collector Power Dissipation | PC |  |  | 1 | W | Ta=25 | 1 |
| Junction Temperature | Tj |  |  | 150 |  |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 |  |  | 1 |

## CAD (KiCad official)

- Symbol: `KTA1023-Y-AT`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files: `kta1023-y-at-etched.step` / `kta1023-y-at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `kta1023-y-at.step` / `kta1023-y-at.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KEC Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588895067231043584) (2 pp, sha256 `31dad423da284fc4`, retrieved 2026-10-18, 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/kta1023-y-at-datasheet.pdf)