# K150SA

**WEIDA** · Trigger Diodes · SMA(DO-214AC)

K150SA from WEIDA, in a SMA(DO-214AC). 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 | Terminal 1 of an unpolarised bidirectional ESD/TVS diode; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised bidirectional ESD/TVS diode; either orientation. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | WEIDA |
| Package | SMA(DO-214AC) |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Breakover voltage (VBO) typical | VBO |  | 155 |  | V | Note 1: measured at 25℃ ambient | 1 |
| On-state voltage | VT |  | 4 |  | V | IT = 1.0 A | 1 |
| Breakover current | IBO |  | 500 |  | μA |  | 1 |
| Repetitive peak off-state current | IDRM |  | 1 |  | μA |  | 1 |
| Holding current | IH |  | 50 |  | mA |  | 1 |
| Operating junction temperature | TJ |  |  | 125 | ℃ |  | 1 |
| Storage temperature range | TS | -40 |  | 125 | ℃ |  | 1 |
| Junction to ambient thermal resistance | RθJA |  | 85 |  | ℃/W | Junction to ambient on printed circuit board | 1 |

## 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 | Unit: inch (mm) ● Lead: Pure tin plated, lead free ● Mounting Position : Any Electrical Parameters | 1 |

## CAD (KiCad official)

- Symbol: `K150SA`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `k150sa-etched.step` / `k150sa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `k150sa.step` / `k150sa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [WEIDA datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590235118804492288) (2 pp, sha256 `89e060a2c81e76c5`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `two-terminal convention` (convention), consensus `off` (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/k150sa-datasheet.pdf)