# BSS138IXTSA1

**Infineon Technologies** · MOSFETs · SOT-23

BSS138IXTSA1 from Infineon Technologies, 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 | Gate | input | Gate of the N-channel enhancement-mode logic-level MOSFET, pin 1 per the package drawing and symbol. |
| 2 | Source | passive | Source of the N-channel MOSFET, pin 2 per the package drawing and symbol. |
| 3 | Drain | passive | Drain of the N-channel MOSFET, pin 3, rated VDS 60 V and ID 0.23 A per the key performance table. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Infineon Technologies |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BSS138IXTSA1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bss138ixtsa1-etched.step` / `bss138ixtsa1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss138ixtsa1.step` / `bss138ixtsa1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Infineon Technologies datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590898010555830272) (10 pp, sha256 `935082c6dc7ce63c`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/bss138ixtsa1-datasheet.pdf)