# TPI8011NRL

**STMicroelectronics** · Semiconductor Discharge Tubes (TSS) · SOIC-8

TPI8011NRL from STMicroelectronics, in a SOIC-8. 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 | Tip | passive | Tip line input side of the 4-point connection, protected by the crowbar with 80 V breakdown and 120 V dynamic breakover for TPI8011N. |
| 2 | GND | power_in | Ground; must be connected to ground together with pins 3, 6 and 7 for good surge current capability on long duration disturbances. |
| 3 | GND | power_in | Ground; must be connected to ground together with pins 2, 6 and 7 for good surge current capability on long duration disturbances. |
| 4 | Ring | passive | Ring line input side of the 4-point connection, protected by the crowbar with 80 V breakdown and 120 V dynamic breakover for TPI8011N. |
| 5 | Ring | passive | Ring line output side of the 4-point connection, so the Ring line crosses the device to eliminate LdI/dt overvoltages from wiring inductance. |
| 6 | GND | power_in | Ground; must be connected to ground together with pins 2, 3 and 7 for good surge current capability on long duration disturbances. |
| 7 | GND | power_in | Ground; must be connected to ground together with pins 2, 3 and 6 for good surge current capability on long duration disturbances. |
| 8 | Tip | passive | Tip line output side of the 4-point connection, so the Tip line crosses the device to eliminate LdI/dt overvoltages from wiring inductance. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SOIC-8 |
| Category | Circuit Protection |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `TPI8011NRL`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `tpi8011nrl-etched.step` / `tpi8011nrl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tpi8011nrl.step` / `tpi8011nrl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590151984557948928) (9 pp, sha256 `860dd206e6175813`, retrieved 2026-10-11, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/tpi8011nrl-datasheet.pdf)