# BTA12-800CWRG

**JSMSEMI** · Thyristors (SCR)/Modules · TO-220AB

BTA12-800CWRG from JSMSEMI, in a TO-220AB. 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 (T1(1)); the gate trigger specs (VD=12V, RL=30Ω) are referenced to this terminal. |
| 2 | T2 | passive | Main terminal 2 of the triac (T2(2)); the datasheet rates it for 800V repetitive peak off-state voltage and 12A RMS on-state current. It is also the non-insulated tab of the TO-220AB package. |
| 3 | G | input | Gate (G(3)); the gate trigger current is 35mA max for the CW grade (50mA for BW) in all quadrants, with a gate trigger voltage of 1.3V max at VD=12V, RL=30Ω. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-220AB |
| Category | Transistors/Thyristors |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Repetitive peak off-state voltage | VDRM |  |  | 800 | V |  | 1 |
| Repetitive peak off-state voltage (reverse) | VRRM |  |  | 800 | V |  | 1 |
| Operating junction temperature | Tj |  |  | 125 | ℃ |  | 1 |
| Storage temperature | Tstg | -40 |  | 150 | ℃ |  | 1 |
| Thermal resistance, junction to ambient | Rth(j-a) |  |  | 60 | ℃/W |  | 1 |
| Thermal resistance, junction to case | Rth(j-c) |  |  | 2.4 | ℃/W |  | 1 |
| Repetitive peak reverse current | IRRM |  |  | 0.01 | mA | VR=VRRM, Tj=25℃ | 1 |
| Repetitive peak reverse current | IRRM |  |  | 0.5 | mA | VR=VRRM, Tj=110℃ | 1 |
| Repetitive peak off-state current | IDRM |  |  | 0.01 | mA | VD=VDRM, Tj=25℃ | 1 |
| Repetitive peak off-state current | IDRM |  |  | 0.5 | mA | VD=VDRM, Tj=110℃ | 1 |
| Gate trigger current, quadrant I | IGT |  |  | 35 | mA | VD=12V; RL=30Ω; quadrant I | 1 |
| Gate trigger current, quadrant II | IGT |  |  | 35 | mA | VD=12V; RL=30Ω; quadrant II | 1 |
| Gate trigger current, quadrant III | IGT |  |  | 35 | mA | VD=12V; RL=30Ω; quadrant III | 1 |
| Holding current | IH |  |  | 35 | mA | IGT=0.5A, Gate Open | 1 |

## CAD (KiCad official)

- Symbol: `BTA12-800CWRG`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `bta12-800cwrg-etched.step` / `bta12-800cwrg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bta12-800cwrg.step` / `bta12-800cwrg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590224285101809664) (2 pp, sha256 `30abbdbb82017235`, retrieved 2026-10-18, 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/bta12-800cwrg-datasheet.pdf)