# 2SA1162GR

**Changjing** · Bipolar (BJT) · SOT-23

2SA1162GR 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 terminal of the PNP transistor, with emitter-base breakdown voltage V(BR)EBO of -5 V minimum at IE=-100μA. |
| 2 | EMITTER | passive | Emitter terminal of the PNP transistor, with maximum emitter-base voltage VEBO of -5 V. |
| 3 | COLLECTOR | passive | Collector terminal of the PNP transistor, with maximum collector-base voltage VCBO of -50 V and collector current IC of -150 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| DC current gain (rank GR(G)) | hFE | 200 |  | 400 |  | VCE=-6V,IC=-2mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.3 | V | IC=-100mA,IB=-10mA | 1 |
| Transition frequency | fT | 80 |  |  | MHz | VCE=-10V,IC=-1mA | 1 |
| Noise figure | NF |  |  | 10 | dB | VCE=-6V,Ic=0.1mA, f=1KHz,Rg=10KΩ | 1 |
| Collector-base breakdown voltage | V(BR)CBO | -50 |  |  | V | IC=-100μA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | -50 |  |  | V | IC=-1mA,IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | -5 |  |  | V | IE=-100μA,IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | -0.1 | μA | VCB=-50V,IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | -0.1 | μA | VEB=-5V,IC=0 | 1 |
| Collector output capacitance | Cob |  | 7 |  | pF | VCB=-10V,IE=0,f=1MHz | 1 |
| Collector-base voltage (absolute maximum) | VCBO |  |  | -50 | V |  | 1 |
| Collector-emitter voltage (absolute maximum) | VCEO |  |  | -50 | V |  | 1 |
| Emitter-base voltage (absolute maximum) | VEBO |  |  | -5 | V |  | 1 |
| Collector current (absolute maximum) | IC |  |  | -150 | mA |  | 1 |
| Collector power dissipation | PC |  |  | 150 | mW |  | 1 |
| Operating junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient | RΘJA |  |  | 833 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `2SA1162GR`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `2sa1162gr-etched.step` / `2sa1162gr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sa1162gr.step` / `2sa1162gr.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/8602943870703583232) (4 pp, sha256 `721cdd5c08064c4a`, retrieved 2026-10-17, 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/2sa1162gr-datasheet.pdf)