# SLVU2.8.TCT

**SEMTECH** · ESD Protection Devices · SOT-23

SLVU2.8.TCT from SEMTECH, 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 | 1 | passive | Ground-side pin of the TVS: connect pin 1 (with pin 2) to ground when protecting one unidirectional line, with reverse stand-off of 2.8V max from pin 3 to 1 or pin 2 to 1. |
| 2 | 2 | passive | Steering diode/ground pin: tied to ground with pin 1 for one-line protection (forward-biased steering diode conducts negative transients from pin 2 to 3), or connected to a line in the antiparallel line-pair configuration. |
| 3 | 3 | passive | Protected line pin: connects to the protected data line (positive polarity signals, max 100pF loading) and is left open in the two-device differential line pair configuration. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | SEMTECH |
| Package | SOT-23 |
| Category | Circuit Protection |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse Stand-Off Voltage | VRWM |  |  | 2.8 | V | Pin 3 to 1 or Pin 2 to 1 | 2 |
| Punch-Through Voltage | VPT | 3 |  |  | V | IPT = 2μA, Pin 3 to 1 | 2 |
| Snap-Back Voltage | VSB | 2.8 |  |  | V | ISB = 50mA, Pin 3 to 1 | 2 |
| Reverse Leakage Current | IR |  |  | 1 | μA | VRWM = 2.8V, T=25°C, Pin 3 to 1 or Pin 2 to 1 | 2 |
| Clamping Voltage | VC |  |  | 7 | V | IPP = 5A, tp = 8/20μs, Pin 3 to 1 | 2 |
| Clamping Voltage | VC |  |  | 15 | V | IPP = 24A, tp = 8/20μs, Pin 2 to 1 | 2 |
| Junction Capacitance | Cj |  | 5 | 10 | pF | VR = 0V, f = 1MHz, Pin 2 to 1 (pin 3 N.C.) | 2 |
| Steering Diode Reverse Breakdown Voltage | VBR | 4 |  |  | V | IT = 10μA, Pin 3 to 2 | 2 |
| Steering Diode Reverse Leakage Current | IRD |  |  | 1 | μA | VRWM = 2.8V, T=25°C, Pin 3 to 2 | 2 |
| Steering Diode Forward Voltage | VF |  |  | 2 | V | IF = 1A, Pin 2 to 3 | 2 |
| Peak Pulse Current | IPP |  |  | 24 | A | tp = 8/20μs | 2 |
| Lead Soldering Temperature | TL |  |  | 260 | °C | 10 seconds | 2 |
| Operating Temperature | TJ | -55 |  | 125 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 2 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | Matte Tin Lead Finish Matte tin has become the industry standard lead-free | 6 |

## CAD (KiCad official)

- Symbol: `SLVU2.8.TCT`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `slvu2-8-tct-etched.step` / `slvu2-8-tct-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `slvu2-8-tct.step` / `slvu2-8-tct.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [SEMTECH datasheet](docs/slvu2-8-tct-datasheet.pdf) (10 pp, sha256 `8358b1705f61a978`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/slvu2-8-tct-datasheet.pdf)