# BTW69-1200RG

**JSMSEMI** · TRIACs · TO-3P

BTW69-1200RG from JSMSEMI, 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, the main-current return terminal of the thyristor; RMS on-state current is rated at 50 A (Tc=70°C) and repetitive peak reverse voltage at 1200 V. |
| 2 | A | passive | Anode (also the mounting tab), the main-current terminal; repetitive peak off-state voltage VDRM is rated at 1200 V and RMS on-state current at 50 A (Tc=70°C). |
| 3 | G | input | Gate trigger input; gate-trigger current IGT is 50 mA max and gate-trigger voltage VGT is 1.3 V max at VD=12 V, RL=33 Ω, with average gate power limited to 1 W. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-3P |
| Category | Transistors |
| 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 |  |  | 1200 | V |  | 1 |
| Repetitive peak reverse voltage | VRRM |  |  | 1200 | V |  | 1 |
| Average on-stage current | IT(AV) |  |  | 31 | A | Tc=70°C | 1 |
| RMS on-state current | IT(RMS) |  |  | 50 | A | Tc=70°C | 1 |
| Surge non-repetitive on-state current | ITSM |  |  | 500 | A | TP=10ms | 1 |
| Average gate power dissipation | PG(AV) |  |  | 1 | W |  | 1 |
| Operating junction temperature | Tj | -40 |  | 125 | ℃ |  | 1 |
| Storage temperature | Tstg | -40 |  | 150 | ℃ |  | 1 |
| Repetitive peak reverse current | IRRM |  |  | 10 | μA | VRM=VRRM; Tj=25℃ | 1 |
| Repetitive peak reverse current | IRRM |  |  | 5 | mA | VRM=VRRM; Tj=125℃ | 1 |
| Repetitive peak off-state current | IDRM |  |  | 10 | μA | VDM=VDRM; Tj=25℃ | 1 |
| Repetitive peak off-state current | IDRM |  |  | 5 | mA | VDM=VDRM; Tj=125℃ | 1 |
| On-state voltage | VTM |  |  | 1.6 | V | ITM= 100A | 1 |
| Gate-trigger current | IGT |  |  | 50 | mA | VD = 12 V; RL= 33Ω | 1 |
| Gate-trigger voltage | VGT |  |  | 1.3 | V | VD = 12 V; RL= 33Ω | 1 |
| Thermal resistance junction to case | Rth(j-c) |  |  | 0.45 | ℃/W | Junction to case | 1 |

## CAD (KiCad official)

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

## Provenance

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

- **Datasheet:** [JSMSEMI datasheet](docs/btw69-1200rg-datasheet.pdf) (2 pp, sha256 `340a9837620d678a`, retrieved 2026-11-07, 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/btw69-1200rg-datasheet.pdf)