# BT139B-600E-JSM

**JSMSEMI** · Thyristors (SCR)/Modules · TO-263

BT139B-600E-JSM from JSMSEMI, in a TO-263. 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 (pin 1, T1(1) in the package diagram), the reference terminal for gate triggering. |
| 2 | T2 | passive | Main terminal 2 of the triac (pin 2, T2(2) in the package diagram), also connected to the mounting tab; the datasheet rates the device at 600 V VDRM/VRRM and 16 A IT(RMS). |
| 3 | G | input | Gate (pin 3, G(3) in the package diagram); the datasheet gives a gate trigger current of up to 35 mA (quadrants I-III) or 70 mA (quadrant IV) at VD=12 V, IT=0.1 A, and a gate trigger voltage of up to 1.5 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-263 |
| 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 reverse current | IRRM |  | 0.02 | 0.5 | mA | VR=VRRM, Tj=125℃ | 1 |
| Repetitive peak off-state current | IDRM |  | 0.02 | 0.5 | mA | VD=VDRM, Tj=125℃ | 1 |
| Gate trigger current, quadrant I | IGT |  |  | 35 | mA | VD=12V; IT= 0.1A | 1 |
| Gate trigger current, quadrant II | IGT |  |  | 35 | mA | VD=12V; IT= 0.1A | 1 |
| Gate trigger current, quadrant III | IGT |  |  | 35 | mA | VD=12V; IT= 0.1A | 1 |
| Gate trigger current, quadrant IV | IGT |  |  | 70 | mA | VD=12V; IT= 0.1A | 1 |
| Gate trigger voltage | VGT |  |  | 1.5 | V | VD=12V; IT= 0.1A | 1 |
| On-state voltage | VTM |  |  | 1.6 | V | IT= 20A | 1 |
| Holding current | IH |  |  | 30 | mA | IGT= 0.1A, VD= 12V | 1 |
| Repetitive peak off-state voltage (VDRM) | VDRM |  |  | 600 | V |  | 1 |
| Repetitive peak off-state voltage (VRRM) | VRRM |  |  | 600 | V |  | 1 |
| RMS on-state current | IT(RMS) |  |  | 16 | A | full sine wave | 1 |
| Non-repetitive peak on-state current | ITSM |  |  | 160 | A | tp=20ms | 1 |
| Peak gate power dissipation | PGM |  |  | 5 | W |  | 1 |
| Average gate power dissipation | PG(AV) |  |  | 0.5 | W |  | 1 |
| Operating junction temperature | Tj |  |  | 125 | ℃ |  | 1 |
| Storage temperature | Tstg | -40 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `BT139B-600E-JSM`
- Footprint: `Package_TO_SOT_SMD:TO-263-2`
- 3D model: TO-263 (KiCad packages3D, STEP)
- 3D model files: `bt139b-600e-jsm-etched.step` / `bt139b-600e-jsm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bt139b-600e-jsm.step` / `bt139b-600e-jsm.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/8590908730798395392) (2 pp, sha256 `77a2a651970a017b`, retrieved 2026-10-19, 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/bt139b-600e-jsm-datasheet.pdf)