# BTA26-800B-3P

**KY** · TRIACs · TO-3P-3

BTA26-800B-3P from KY, in a TO-3P-3. 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 | T1 | passive | Main terminal 1 of the triac, which carries the on-state current up to IT(RMS) 25A at Tc=110°C and is the reference for gate triggering. |
| 2 | T2 | passive | Main terminal 2 of the triac, which withstands a repetitive peak off-state voltage VDRM/VRRM of 800V for BTA26-800 and carries IT(RMS) 25A at Tc=110°C. |
| 3 | G | input | Gate terminal with a gate trigger voltage VGT of at most 1.5V (VD=12V, RL=30Ω) and a peak gate current IGM of 6A at Tj=125°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KY |
| Package | TO-3P-3 |
| Category | Transistors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BTA26-800B-3P`
- Footprint: `Package_TO_SOT_THT:TO-3P-3_Vertical`
- 3D model: TO-3P-3 (KiCad packages3D, STEP)
- 3D model files: `bta26-800b-3p-etched.step` / `bta26-800b-3p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bta26-800b-3p.step` / `bta26-800b-3p.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KY datasheet](docs/bta26-800b-3p-datasheet.pdf) (7 pp, sha256 `ecd38aacb5921e47`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/bta26-800b-3p-datasheet.pdf)