# PJSRV05-4

**Leiditech** · ESD And Surge Protection (TVS/ESD) · SOT-26

PJSRV05-4 from Leiditech, in a SOT-26. 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 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to the REF1/REF2 references; the part is rated for a 5V operating voltage (VRWM 5V). |
| 2 | REF1 | power_in | Negative reference for the steering diodes, to be connected directly to a ground plane with the path kept as short as possible to minimize parasitic inductance. |
| 3 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to the REF1/REF2 references; the part is rated for a 5V operating voltage (VRWM 5V). |
| 4 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to the REF1/REF2 references; the part is rated for a 5V operating voltage (VRWM 5V). |
| 5 | REF2 | power_in | Positive reference for the steering diodes, connected to VCC in the application circuits; the part is rated for a 5V operating voltage (VRWM 5V). |
| 6 | I/O | bidirectional | Data line protected by steering diodes that clamp transients to the REF1/REF2 references; the part is rated for a 5V operating voltage (VRWM 5V). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Leiditech |
| Package | SOT-26 |
| Category | Circuit Protection |
| Pins | 6 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (min) at IT | VBR | 6 |  |  | V | IT = 1 mA | 2 |
| Clamping voltage (typ) | VC |  | 15 |  | V | @1A (column header 'VC @1A') | 2 |
| Clamping voltage (max) | VC |  |  | 25 | V | Column '(@A)' printed value 12 (current condition as printed) | 2 |
| Reverse leakage current (max) | IR |  |  | 0.5 | μA |  | 2 |
| Junction capacitance (typ) | C |  | 1.5 |  | pF |  | 2 |
| Peak pulse power (8/20µs) | Ppp |  |  | 300 | W | 8/20µs | 1 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Contact) | 1 |
| Operating temperature range | TJ | -55 |  | 125 | ℃ |  | 1 |
| Storage temperature range | TSTJ | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `PJSRV05-4`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-26 (KiCad packages3D, STEP)
- 3D model files: `pjsrv05-4-etched.step` / `pjsrv05-4-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pjsrv05-4.step` / `pjsrv05-4.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Leiditech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602845879439548416) (8 pp, sha256 `e569f2477ca24069`, retrieved 2026-10-13, 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/pjsrv05-4-datasheet.pdf)