# 2SA1492

**JSMSEMI** · Bipolar (BJT) · TO-3PN

2SA1492 from JSMSEMI, in a TO-3PN. 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; emitter-base voltage is limited to -6 V and continuous base current to -4 A. |
| 2 | COLLECTOR | passive | Collector terminal; collector-base and collector-emitter voltage are rated at -180 V and continuous collector current at -15 A. |
| 3 | EMITTER | passive | Emitter terminal of the PNP transistor, reference for the -6 V emitter-base voltage limit. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-3PN |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `2SA1492`
- Footprint: `Package_TO_SOT_THT:TO-3P-3_Vertical`
- 3D model: TO-3PN (KiCad packages3D, STEP)
- 3D model files: `2sa1492-etched.step` / `2sa1492-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sa1492.step` / `2sa1492.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/2sa1492-datasheet.pdf) (3 pp, sha256 `c9941d9869746c5f`, retrieved 2026-10-26, 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/2sa1492-datasheet.pdf)