# 2SA1576A-Q

**Yangzhou Yangjie Elec Tech** · Bipolar (BJT) · SOT-323

2SA1576A-Q from Yangzhou Yangjie Elec Tech, in a SOT-323. 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 | B | input | Base of the PNP transistor; the datasheet lists it as pin 1 (BASE) in the SOT-323 package. |
| 2 | E | passive | Emitter of the PNP transistor; the datasheet lists it as pin 2 (EMITTER), with VEBO rated at -6 V. |
| 3 | C | passive | Collector of the PNP transistor; the datasheet lists it as pin 3 (COLLECTOR), with IC rated at -150 mA, VCBO -60 V and VCEO -50 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-base breakdown voltage | VCBO | -60 |  |  | V | IC=-50μA,IE=0 | 2 |
| Collector-emitter breakdown voltage | VCEO | -50 |  |  | V | IC =-1mA,IB=0 | 2 |
| Emitter-base breakdown voltage | VEBO | -6 |  |  | V | IE=-50μA,IC=0 | 2 |
| Collector-base cut-off current | ICBO |  |  | -0.1 | μA | VCB=-60V,IE=0 | 2 |
| Emitter-base cut-off current | IEBO |  |  | -0.1 | uA | VEB=-6V,IC=0 | 2 |
| DC current gain, rank Q (2SA1576A-Q range 120-270) | hFE | 120 |  | 270 |  | VCE=-6V,IC=-1mA | 2 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.5 | V | IC=-50mA,IB=-5mA | 2 |
| Output capacitance | Cob |  | 4 |  | V | VCB=-12V,IE=0,f=1MHz | 2 |
| Transition frequency | fT | 100 |  |  | MHz | VCE=-12V,IC=-2mA,f=30MHz | 2 |
| Collector-base voltage | VCBO |  |  | -60 | V | Ta=25℃ | 1 |
| Collector-emitter voltage | VCEO |  |  | -50 | V | Ta=25℃ | 1 |
| Emitter-base voltage | VEBO |  |  | -6 | V | Ta=25℃ | 1 |
| Collector current | IC |  |  | -150 | mA | Ta=25℃ | 1 |
| Collector power dissipation | PC |  |  | 200 | mW | Ta=25℃ | 1 |
| Operation junction temperature | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | ℃ |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `2SA1576A-Q`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `2sa1576a-q-etched.step` / `2sa1576a-q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sa1576a-q.step` / `2sa1576a-q.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603373290040156160) (5 pp, sha256 `d0cc970a10e462f3`, retrieved 2026-10-18, 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/2sa1576a-q-datasheet.pdf)