# 2SA1037AKT146R

**ROHM Semicon** · Bipolar (BJT) · TO-236-3(SOT-23-3)

2SA1037AKT146R from ROHM Semicon, in a TO-236-3(SOT-23-3). 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; VEBO max -6V and BVEBO min -6V at IE = -50µA. |
| 2 | Base | passive | Base terminal of the PNP transistor; hFE 120 to 560 at VCE = -6V, IC = -1mA. |
| 3 | Collector | passive | Collector terminal of the PNP transistor; VCEO -50V, IC -150mA continuous (ICP -200mA at Pw = 1ms single pulse). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | TO-236-3(SOT-23-3) |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `2SA1037AKT146R`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
- 3D model files: `2sa1037akt146r-etched.step` / `2sa1037akt146r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sa1037akt146r.step` / `2sa1037akt146r.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202896555233280) (16 pp, sha256 `75992ed8cd319959`, retrieved 2026-10-12, 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/2sa1037akt146r-datasheet.pdf)