# T1635-800G-TR

**STMicroelectronics** · Thyristors (SCR)/Modules · D2PAK

T1635-800G-TR from STMicroelectronics, in a D2PAK. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A1 | bidirectional | Anode 1 terminal, conducts on-state current (16 A maximum RMS) when triac is triggered by gate signal in both polarities. |
| 2 | A2 | bidirectional | Anode 2 terminal, conducts on-state current (16 A maximum RMS) in both polarities; gate trigger conditions are specified with reference to this terminal. |
| 3 | G | input | Gate terminal, control input requiring maximum 35 mA trigger current to enable on-state conduction in any quadrant. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | D2PAK |
| Category | Transistors/Thyristors |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `T1635-800G-TR`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: D2PAK (KiCad packages3D, STEP)
- 3D model files: `t1635-800g-tr-etched.step` / `t1635-800g-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `t1635-800g-tr.step` / `t1635-800g-tr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912702320623616) (18 pp, sha256 `062eb831ce824cad`, retrieved 2026-09-23, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/t1635-800g-tr-datasheet.pdf)