# P4KE150A

**Brightking** · ESD And Surge Protection (TVS/ESD) · DO-41

P4KE150A from Brightking, in a DO-41. 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 | Cathode | passive | Cathode lead, identified by the color band on the body (the datasheet states the color band denotes cathode for all types except bi-directional models); for the P4KE150A it has a reverse stand-off voltage VRWM of 128 V and a maximum clamping voltage VC of 207 V at IPP 2.0 A. |
| 2 | A | passive | Anode lead, the axial end opposite the cathode band; the datasheet gives a breakdown voltage VBR of 143-158 V at a test current IT of 1 mA and a reverse leakage IR of 1 µA maximum at VRWM for this lead pair, with no separate pin function stated. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| Package | DO-41 |
| Category | Circuit 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 stand-off voltage | VRWM |  |  | 128 | V |  | 3 |
| Breakdown voltage | VBR | 143 |  | 158 | V | @IT = 1 mA | 3 |
| Maximum clamping voltage | VC |  |  | 207 | V | @IPP = 2.0 A | 3 |
| Reverse leakage current | IR |  |  | 1 | µA | @VRWM | 3 |
| Peak pulse power dissipation | PPPM | 400 |  |  | W | 10/1000µs waveform (Note 1, Fig.1) | 1 |
| Steady state power dissipation | PM(AV) |  |  | 1.5 | W | TL=75℃ (Fig.5) | 1 |
| Peak forward surge current | IFSM |  |  | 40 | A | 8.3ms single half sine-wave, superimposed on rated load (JEDEC Method) (Note 2, Fig.6) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Typical thermal resistance junction to lead | RθJL |  | 60 |  | ℃/W |  | 1 |
| Typical thermal resistance junction to ambient | RθJA |  | 100 |  | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `P4KE150A`
- Footprint: `Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal`
- 3D model: DO-41 (KiCad packages3D, STEP)

## Provenance

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

- **Datasheet:** [Brightking datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590228615527886848) (6 pp, sha256 `7b2215d8b12af598`, retrieved 2026-10-14, 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/p4ke150a-datasheet.pdf)