# RF1S540SM-JSM

**JSMSEMI** · MOSFETs · TO-263-2L

RF1S540SM-JSM from JSMSEMI, in a TO-263-2L. 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 | G | input | Gate; gate-source voltage is rated at ±20 V (VGSS) with a threshold of 2.0 V min to 4.0 V max at VDS = VGS, ID = 250 µA. |
| 2 | D | passive | Drain (also the exposed tab); drain-source voltage is rated at 100 V (VDSS) with continuous drain current of 35 A and pulsed drain current of 140 A. |
| 3 | S | passive | Source; the body diode continuous current is rated at 35 A and pulsed at 140 A, with a maximum forward voltage of 2 V at ISD = 15 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-263-2L |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `RF1S540SM-JSM`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263-2L (KiCad packages3D, STEP)
- 3D model files: `rf1s540sm-jsm-etched.step` / `rf1s540sm-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `rf1s540sm-jsm.step` / `rf1s540sm-jsm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/rf1s540sm-jsm-datasheet.pdf) (6 pp, sha256 `deb18b55d5c99fd5`, retrieved 2026-11-05, 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/rf1s540sm-jsm-datasheet.pdf)