# AD-KSA1182-Y

**Changjing** · Bipolar Transistors - BJT · SOT-23

AD-KSA1182-Y from Changjing, 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 | BASE | input | Base of the PNP transistor; VEBO is limited to -5 V and V(BR)EBO is at least -5 V at IE = -100 µA. |
| 2 | EMITTER | passive | Emitter of the PNP transistor; collector-emitter voltage VCEO is rated at -30 V. |
| 3 | COLLECTOR | passive | Collector of the PNP transistor; continuous collector current IC is rated at -500 mA and VCBO at -35 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base breakdown voltage | V(BR)CBO | -35 |  |  | V | IC = -100µA, IE = 0A | 2 |
| Collector-emitter breakdown voltage | V(BR)CEO | -30 |  |  | V | IC = -1mA, IB = 0A | 2 |
| Emitter-base breakdown voltage | V(BR)EBO | -5 |  |  | V | IE = -100µA, IC = 0A | 2 |
| Collector cut-off current | ICBO |  |  | -0.1 | μA | VCB = -35V, IE = 0A | 2 |
| Emitter-base cut-off current | IEBO |  |  | -0.1 | μA | VEB = -5V, IC = 0A | 2 |
| DC current gain (Y rank) | hFE(1) | 120 |  | 240 | - | VCE = -1V, IC = -100mA | 2 |
| DC current gain | hFE(2) | 25 |  |  | - | VCE = -6V, IC = -400mA | 2 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -250 | mV | IC = -100mA, IB = -10mA | 2 |
| Base-emitter voltage | VBE(on) |  |  | -1 | V | VCE = -1V, IC = -100mA | 2 |
| Collector-base voltage | VCBO |  |  | -35 | V |  | 2 |
| Collector-emitter voltage | VCEO |  |  | -30 | V |  | 2 |
| Emitter-base voltage | VEBO |  |  | -5 | V |  | 2 |
| Collector continuous current | IC |  |  | -500 | mA |  | 2 |
| Collector power dissipation | PC |  |  | 150 | mW |  | 2 |
| Operating junction and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 2 |

## CAD (KiCad official)

- Symbol: `AD-KSA1182-Y`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ad-ksa1182-y-etched.step` / `ad-ksa1182-y-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-ksa1182-y.step` / `ad-ksa1182-y.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/ad-ksa1182-y-datasheet.pdf) (5 pp, sha256 `1e192a7cd6286dbd`, retrieved 2026-11-05, 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-ksa1182-y-datasheet.pdf)