# TYN640RG

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

TYN640RG from STMicroelectronics, 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 | K | passive | Cathode, the on-state current return, rated for 40 A rms (25 A average) on-state current at Tc = 95 °C. |
| 2 | A | passive | Anode, also connected to the metal tab, rated for repetitive peak off-state voltage VDRM/VRRM of 600 V for TYN640RG. |
| 3 | G | input | Gate trigger input needing IGT of 3.5 mA min to 35 mA max at VD = 12 V, with a maximum peak reverse gate voltage of 5 V and a peak gate current of 4 A (tp = 20 µs). |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `TYN640RG`
- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`
- 3D model: TO-220AB (KiCad packages3D, STEP)
- 3D model files: `tyn640rg-etched.step` / `tyn640rg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `tyn640rg.step` / `tyn640rg.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/tyn640rg.pdf) (8 pp, sha256 `809109598217e0de`, retrieved 2026-11-05, tier: manufacturer)
- **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/tyn640rg-datasheet.pdf)