component
BT131-800T
Public Made by Adomby adom
WEIDA Thyristors (SCR)/Modules, SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBT131-800T
WEIDA · Thyristors (SCR)/Modules · SOT-223
BT131-800T from WEIDA, in a SOT-223. 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 (T1), the triac's reference terminal on the SOT-223-3L package; the datasheet rates the part at IT(RMS) 1 A and VDRM/VRRM 800 V for the -800 version. |
| 2 | T2 | passive | Main terminal 2 (T2) of the triac, on the middle lead of the SOT-223-3L package; the datasheet rates the part at IT(RMS) 1 A and VDRM/VRRM 800 V for the -800 version. |
| 3 | G | input | Gate trigger input; for the T-grade part IGT is limited to 3 mA in quadrants I-II-III and 5 mA in quadrant IV, with VGT max 1.3 V, and peak gate current IGM is 2 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WEIDA |
| Package | SOT-223 |
| 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 |
|---|---|---|---|---|---|---|---|
| Storage junction temperature range | Tstg | -40 | 150 | ℃ | 1 | ||
| Operating junction temperature range | Tj | -40 | 125 | ℃ | 1 | ||
| Repetitive peak off-state voltage | VDRM | 800 | V | Tj=25℃ | 1 | ||
| Repetitive peak reverse voltage | VRRM | 800 | V | Tj=25℃ | 1 | ||
| RMS on-state current | IT(RMS) | 1 | A | 1 | |||
| Non repetitive surge peak on-state current | ITSM | 16 | A | full cycle, F=50Hz | 1 | ||
| I2t value for fusing | I2t | 1.28 | A²s | tp=10ms | 1 | ||
| Critical rate of rise of on-state current, quadrants Ⅰ-Ⅱ-Ⅲ | dI/dt | 50 | A/μs | IG=2×IGT | 1 | ||
| Critical rate of rise of on-state current, quadrant Ⅳ | dI/dt | 10 | A/μs | IG=2×IGT | 1 | ||
| Peak gate current | IGM | 2 | A | 1 | |||
| Average gate power dissipation | PG(AV) | 0.5 | W | 1 | |||
| Peak gate power | PGM | 5 | W | 1 | |||
| Gate trigger current, quadrants Ⅰ-Ⅱ-Ⅲ | IGT | 3 | mA | VD=12V, RL=33Ω | 2 | ||
| Gate trigger current, quadrant Ⅳ | IGT | 5 | mA | 2 | |||
| Gate non-trigger voltage, quadrants Ⅰ-Ⅱ-Ⅲ-Ⅳ | VGD | 0.2 | V | VD=VDRM, Tj=125℃, RL=3.3kΩ | 2 | ||
| Holding current | IH | 5 | mA | IT=100mA | 2 | ||
| Latching current, quadrants Ⅰ-Ⅲ-Ⅳ | IL | 5 | mA | IG=1.2IGT | 2 | ||
| Latching current, quadrant Ⅱ | IL | 10 | mA | 2 | |||
| Critical rate of rise of off-state voltage | dV/dt | 20 | V/µs | VD=0.66×VDRM, Tj=125℃, Gate open | 2 | ||
| On-state voltage | VTM | 1.5 | V | ITM=1.4A, tp=380μs, Tj=25℃ | 2 | ||
| Repetitive peak off-state current | IDRM/IRRM | 5 | µA | VDRM=VRRM, Tj=25℃ | 2 | ||
| Repetitive peak off-state current | IDRM/IRRM | 0.5 | mA | Tj=125℃ | 2 | ||
| Gate trigger voltage, quadrants Ⅰ-Ⅱ-Ⅲ-Ⅳ | VGT | 1.3 | V | 2 | |||
| Junction to case thermal resistance (AC), SOT-223-2L | Rth(j-c) | 31 | ℃/W | junction to case (AC), SOT-223-2L | 2 |
CAD (KiCad official)
- Symbol:
BT131-800T - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files:
bt131-800t-etched.step/bt131-800t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bt131-800t.step/bt131-800t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WEIDA datasheet (7 pp, sha256
151758d034c6b145, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).