# LNBTVS6-221S

**STMicroelectronics** · TVS · SMC

LNBTVS6-221S from STMicroelectronics, in a SMC. 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 | K | passive | Cathode of the unidirectional TVS diode, marked by the cathode band on the package; connects to the protected LNB supply line. |
| 2 | A | passive | Anode of the unidirectional TVS diode, normally connected to ground; stand-off voltage VRM 20 V, breakdown VBR 23.1 V min at 1 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SMC |
| Category | TVS/Fuse/Board Level Protection |
| Pins | 2 |

## 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 leakage current | IRM |  |  | 0.2 | µA | @ VRM = 20 V, Tamb = 25 °C | 3 |
| Reverse leakage current | IRM |  |  | 1 | µA | @ VRM = 20 V, 85 °C | 3 |
| Breakdown voltage | VBR | 22 | 23.1 | 24.2 | V | @ IR = 1 mA, Tamb = 25 °C | 3 |
| Clamping voltage 10/1000 µs | VCL |  |  | 33.2 | V | @ IPP = 90 A, 10/1000 µs | 3 |
| Clamping voltage 8/20 µs | VCL |  |  | 32 | V | @ IPP = 500 A, 8/20 µs | 3 |
| Voltage temperature coefficient | αT |  |  | 9.3 | 10-4/°C | VBR @ TJ = VBR @ 25°C x (1 + αT x (TJ, 25)) | 3 |
| Capacitance | C |  | 6 |  | nF |  | 3 |
| Stand-off voltage | VRM |  | 20 |  | V |  | 3 |
| Peak pulse power dissipation | PPP |  |  | 22.5 | kW | 8/20 µs, Tj initial = Tamb | 2 |
| Storage temperature range | Tstg | -65 |  | 150 | °C |  | 2 |
| Operating junction temperature range | Tj | -55 |  | 150 | °C |  | 2 |
| Maximum lead temperature for soldering | TL |  |  | 260 | °C | during 10 s | 2 |
| Junction to leads thermal resistance | Rth(j-l) |  | 15 |  | °C/W | SMC | 2 |

## CAD (KiCad official)

- Symbol: `LNBTVS6-221S`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/lnbtvs6-221s.pdf) (13 pp, sha256 `5e50dddbaac4c5b7`, 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/lnbtvs6-221s-datasheet.pdf)