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PRTR5V0U2X-FS
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FUXINSEMI ESD And Surge Protection (TVS/ESD), SOT-143. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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PRTR5V0U2X-FS
FUXINSEMI · ESD And Surge Protection (TVS/ESD) · SOT-143
PRTR5V0U2X-FS from FUXINSEMI, in a SOT-143. 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 | GND | power_in | Ground side of the TVS array (zener anode in the pin-configuration diagram); the clamping voltage is specified from I/O pin to Ground, and leakage is tested pin 4 to pin 1. |
| 2 | I/O1 | passive | Protected I/O line, steered by the diode bridge with 0.8 pF typ (1.0 pF max) capacitance to ground and 0.4 pF typ (0.6 pF max) between I/O pins, with ±15 kV air and ±8 kV contact ESD protection per IEC 61000-4-2. |
| 3 | I/O2 | passive | Protected I/O line, steered by the diode bridge with 0.8 pF typ (1.0 pF max) capacitance to ground and 0.4 pF typ (0.6 pF max) between I/O pins, with ±15 kV air and ±8 kV contact ESD protection per IEC 61000-4-2. |
| 4 | VCC | power_in | Zener cathode node in the pin-configuration diagram (supply/reference side) with reverse working voltage 5.0 V max, breakdown 6.0 V min at 1 mA, and leakage 1 µA max at 5 V (pin 4 to pin 1). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SOT-143 |
| Category | Circuit Protection |
| Pins | 4 |
CAD (KiCad official)
- Symbol:
PRTR5V0U2X-FS - Footprint:
Package_TO_SOT_SMD:SOT-143 - 3D model: SOT-143 (KiCad packages3D, STEP)
- 3D model files:
prtr5v0u2x-fs-etched.step/prtr5v0u2x-fs-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);prtr5v0u2x-fs.step/prtr5v0u2x-fs.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: FUXINSEMI datasheet (4 pp, sha256
494f2c9f8fab80e0, retrieved 2026-10-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-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).
# PRTR5V0U2X-FS
**FUXINSEMI** · ESD And Surge Protection (TVS/ESD) · SOT-143
PRTR5V0U2X-FS from FUXINSEMI, in a SOT-143. 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 | GND | power_in | Ground side of the TVS array (zener anode in the pin-configuration diagram); the clamping voltage is specified from I/O pin to Ground, and leakage is tested pin 4 to pin 1. |
| 2 | I/O1 | passive | Protected I/O line, steered by the diode bridge with 0.8 pF typ (1.0 pF max) capacitance to ground and 0.4 pF typ (0.6 pF max) between I/O pins, with ±15 kV air and ±8 kV contact ESD protection per IEC 61000-4-2. |
| 3 | I/O2 | passive | Protected I/O line, steered by the diode bridge with 0.8 pF typ (1.0 pF max) capacitance to ground and 0.4 pF typ (0.6 pF max) between I/O pins, with ±15 kV air and ±8 kV contact ESD protection per IEC 61000-4-2. |
| 4 | VCC | power_in | Zener cathode node in the pin-configuration diagram (supply/reference side) with reverse working voltage 5.0 V max, breakdown 6.0 V min at 1 mA, and leakage 1 µA max at 5 V (pin 4 to pin 1). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | FUXINSEMI |
| Package | SOT-143 |
| Category | Circuit Protection |
| Pins | 4 |
## CAD (KiCad official)
- Symbol: `PRTR5V0U2X-FS`
- Footprint: `Package_TO_SOT_SMD:SOT-143`
- 3D model: SOT-143 (KiCad packages3D, STEP)
- 3D model files: `prtr5v0u2x-fs-etched.step` / `prtr5v0u2x-fs-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `prtr5v0u2x-fs.step` / `prtr5v0u2x-fs.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [FUXINSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757278024801247232) (4 pp, sha256 `494f2c9f8fab80e0`, retrieved 2026-10-21, 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/prtr5v0u2x-fs-datasheet.pdf)