# NUP4202W1T2G-JSM

**JSMSEMI** · ESD And Surge Protection (TVS/ESD) · SOT-363

NUP4202W1T2G-JSM from JSMSEMI, in a SOT-363. 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 | I/O1 | passive | High-speed data line 1 protected by a steering-diode pair, with 0.4 pF max capacitance between I/O pins and 1 pF max to ground (VR = 0 V, f = 1 MHz). |
| 2 | GND | power_in | Ground connection for the steering diodes and the TVS diode; IEC61000-4-2 ESD rating of 20 kV contact and 20 kV air. |
| 3 | I/O2 | passive | High-speed data line 2 protected by a steering-diode pair, with 0.4 pF max capacitance between I/O pins and 1 pF max to ground (VR = 0 V, f = 1 MHz). |
| 4 | I/O3 | passive | High-speed data line 3 protected by a steering-diode pair, with 0.4 pF max capacitance between I/O pins and 1 pF max to ground (VR = 0 V, f = 1 MHz). |
| 5 | VCC | power_in | Supply rail (Vcc) protection pin connected to the top diode rail and the TVS diode, with a reverse working peak voltage of 5 V max. |
| 6 | I/O4 | passive | High-speed data line 4 protected by a steering-diode pair, with 0.4 pF max capacitance between I/O pins and 1 pF max to ground (VR = 0 V, f = 1 MHz). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-363 |
| Category | Circuit Protection |
| Pins | 6 |

## CAD (KiCad official)

- Symbol: `NUP4202W1T2G-JSM`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `nup4202w1t2g-jsm-etched.step` / `nup4202w1t2g-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nup4202w1t2g-jsm.step` / `nup4202w1t2g-jsm.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/nup4202w1t2g-jsm-datasheet.pdf) (5 pp, sha256 `38b3dd35d9b21e92`, 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/nup4202w1t2g-jsm-datasheet.pdf)