# PSOT36C-LF-T7

**ProTek Devices** · ESD And Surge Protection (TVS/ESD) · SOT-23

PSOT36C-LF-T7 from ProTek Devices, 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 | The datasheet shows pin 1 as one of the three SOT-23 TVS terminals for the bidirectional PSOT36C but does not name its function or state any limit for it. |
| 2 | 2 | passive | The datasheet shows pin 2 as one of the three SOT-23 TVS terminals for the bidirectional PSOT36C but does not name its function or state any limit for it. |
| 3 | 3 | passive | The datasheet names pin 3 as the cathode only for unidirectional devices (Note 3), so no cathode function is stated for the bidirectional PSOT36C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ProTek Devices |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power (tp = 8/20µs) | PPP |  |  | 500 | W | tp = 8/20µs, see Figure 1 | 2 |
| Operating Temperature | TL | -55 |  | 150 | °C |  | 2 |
| Storage Temperature | TSTG | -55 |  | 150 | °C |  | 2 |
| Minimum Breakdown Voltage | V(BR) | 40 |  |  | V | @ 1mA | 2 |
| Maximum Clamping Voltage (Fig. 2) | VC |  |  | 51 | V | @ IP = 1A | 2 |
| Maximum Clamping Voltage (8/20µs) | VC |  |  | 76.8 | V | 8/20µs @ IPP = 9.0A | 2 |
| Maximum Leakage Current | ID |  |  | 1 | µA | @ VWM | 2 |
| Rated Stand-off Voltage | VWM |  | 36 |  | V |  | 2 |
| Typical Capacitance | C |  | 60 |  | pF | @ 0V, 1MHz | 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 | • Lead-Free Pure-Tin Plating (Annealed) • Solder Reflow Temperature: | 1 |

## CAD (KiCad official)

- Symbol: `PSOT36C-LF-T7`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `psot36c-lf-t7-etched.step` / `psot36c-lf-t7-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `psot36c-lf-t7.step` / `psot36c-lf-t7.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ProTek Devices datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590164879144349696) (8 pp, sha256 `619b1e4b6025dab3`, retrieved 2026-10-19, 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/psot36c-lf-t7-datasheet.pdf)