# P6SMB27CA-AT

**Brightking** · TVS · SMB(DO-214AA)

P6SMB27CA-AT from Brightking, in a SMB(DO-214AA). 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 | A1 | passive | Bidirectional TVS terminal with no polarity (no cathode band on bi-directional models), 23.10V reverse stand-off and 25.70~28.40V breakdown at 1mA for P6SMB27CA-AT, interchangeable with terminal 2. |
| 2 | A2 | passive | Bidirectional TVS terminal with no polarity, 37.5V max clamping at 16.3A peak pulse current (10/1000μs) for P6SMB27CA-AT, interchangeable with terminal 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Brightking |
| Package | SMB(DO-214AA) |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakdown Voltage | VBR | 25.7 |  | 28.4 | V | @IT=1mA, TA=25℃ | 2 |
| Maximum Clamping Voltage | VC |  |  | 37.5 | V | @IPP=16.3A, TA=25℃ | 2 |
| Peak Pulse Current | IPP |  |  | 16.3 | A | 10/1000μs waveform, TA=25℃ | 2 |
| Reverse Leakage | IR |  |  | 1 | μA | @VRWM=23.10V, TA=25℃ | 2 |
| Peak pulse power dissipation | PPPM | 600 |  |  | Watts | 10/1000μs waveform, minimum | 1 |
| Steady state power dissipation | PM(AV) |  |  | 5 | Watts | TA=50℃ | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal resistance junction to lead | RθJL |  | 20 |  | ℃/W | Typical | 1 |
| Thermal resistance junction to ambient | RθJA |  | 100 |  | ℃/W | Typical | 1 |
| Reverse Stand-Off Voltage | VRWM |  | 23.1 |  | V | TA=25℃ | 2 |
| Breakdown voltage test current | IT |  | 1 |  | mA | TA=25℃ | 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 | ■ Terminal: Tin plated, solderable per MIL-STD-750, Method 2026 ■ Polarity: Color band denotes cathode except bi-directional models | 1 |

## CAD (KiCad official)

- Symbol: `P6SMB27CA-AT`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `p6smb27ca-at-etched.step` / `p6smb27ca-at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `p6smb27ca-at.step` / `p6smb27ca-at.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Brightking datasheet](docs/p6smb27ca-at-datasheet.pdf) (7 pp, sha256 `a75ca10549b0f034`, retrieved 2026-10-22, tier: lcsc)
- **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/p6smb27ca-at-datasheet.pdf)