# BTW69-1200B

**KY** · TRIACs · TO-3P

BTW69-1200B from KY, in a TO-3P. 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 | K | passive | Cathode of the SCR, the return terminal for on-state current (IT(RMS) 55 A max) and gate current. |
| 2 | A | passive | Anode of the SCR, which blocks up to VDRM/VRRM of 1200 V for the BTW69-1200B and carries on-state current of 55 A RMS max. |
| 3 | G | input | Gate trigger input, which turns the SCR on with VGT up to 1.5 V and IGT up to 70 mA at VD=12 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KY |
| Package | TO-3P |
| Category | Triode/MOS Tube/Transistor |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BTW69-1200B`
- Footprint: `Package_TO_SOT_THT:TO-3P-3_Vertical`
- 3D model: TO-3P (KiCad packages3D, STEP)
- 3D model files: `btw69-1200b-etched.step` / `btw69-1200b-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `btw69-1200b.step` / `btw69-1200b.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KY datasheet](docs/btw69-1200b-datasheet.pdf) (5 pp, sha256 `e469f18e4a4dc787`, 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/btw69-1200b-datasheet.pdf)